No attempt has been made to document any of the demoted functions here.

Fixes the following W=1 kernel build warning(s):

 drivers/usb/misc/ldusb.c:192: warning: Function parameter or member 'dev' not described in 'ld_usb_abort_transfers'
 drivers/usb/misc/ldusb.c:206: warning: Function parameter or member 'dev' not described in 'ld_usb_delete'
 drivers/usb/misc/ldusb.c:220: warning: Function parameter or member 'urb' not described in 'ld_usb_interrupt_in_callback'
 drivers/usb/misc/ldusb.c:281: warning: Function parameter or member 'urb' not described in 'ld_usb_interrupt_out_callback'
 drivers/usb/misc/ldusb.c:301: warning: Function parameter or member 'inode' not described in 'ld_usb_open'
 drivers/usb/misc/ldusb.c:301: warning: Function parameter or member 'file' not described in 'ld_usb_open'
 drivers/usb/misc/ldusb.c:372: warning: Function parameter or member 'inode' not described in 'ld_usb_release'
 drivers/usb/misc/ldusb.c:372: warning: Function parameter or member 'file' not described in 'ld_usb_release'
 drivers/usb/misc/ldusb.c:414: warning: Function parameter or member 'file' not described in 'ld_usb_poll'
 drivers/usb/misc/ldusb.c:414: warning: Function parameter or member 'wait' not described in 'ld_usb_poll'
 drivers/usb/misc/ldusb.c:439: warning: Function parameter or member 'file' not described in 'ld_usb_read'
 drivers/usb/misc/ldusb.c:439: warning: Function parameter or member 'buffer' not described in 'ld_usb_read'
 drivers/usb/misc/ldusb.c:439: warning: Function parameter or member 'count' not described in 'ld_usb_read'
 drivers/usb/misc/ldusb.c:439: warning: Function parameter or member 'ppos' not described in 'ld_usb_read'
 drivers/usb/misc/ldusb.c:526: warning: Function parameter or member 'file' not described in 'ld_usb_write'
 drivers/usb/misc/ldusb.c:526: warning: Function parameter or member 'buffer' not described in 'ld_usb_write'
 drivers/usb/misc/ldusb.c:526: warning: Function parameter or member 'count' not described in 'ld_usb_write'
 drivers/usb/misc/ldusb.c:526: warning: Function parameter or member 'ppos' not described in 'ld_usb_write'
 drivers/usb/misc/ldusb.c:651: warning: Function parameter or member 'intf' not described in 'ld_usb_probe'
 drivers/usb/misc/ldusb.c:651: warning: Function parameter or member 'id' not described in 'ld_usb_probe'
 drivers/usb/misc/ldusb.c:754: warning: Function parameter or member 'intf' not described in 'ld_usb_disconnect'

Cc: Johan Hovold <johan@kernel.org>
Cc: Michael Hund <mhund@ld-didactic.de>
Cc: David Glance <advidgsf@sourceforge.net>
Cc: Juergen Stuber <starblue@users.sourceforge.net>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Link: https://lore.kernel.org/r/20200703174148.2749969-28-lee.jones@linaro.orgSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Looks as though this has been an issue since the driver's
inception back in 2014.

Fixes the following W=1 kernel build warning(s):

 drivers/usb/gadget/function/u_serial.c:538: warning: Function parameter or member 'port' not described in 'gs_start_io'
 drivers/usb/gadget/function/u_serial.c:538: warning: Excess function parameter 'dev' description in 'gs_start_io'

Cc: Felipe Balbi <balbi@kernel.org>
Cc: "Michał Mirosław" <mirq-linux@rere.qmqm.pl>
Cc: Al Borchers <alborchers@steinerpoint.com>
Cc: Peter Berger <pberger@brimson.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Link: https://lore.kernel.org/r/20200703174148.2749969-27-lee.jones@linaro.orgSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

No attempt has been made to document any of the demoted functions here.

Fixes the following W=1 kernel build warning(s):

 drivers/usb/misc/iowarrior.c:251: warning: Function parameter or member 'dev' not described in 'iowarrior_delete'
 drivers/usb/misc/iowarrior.c:279: warning: Function parameter or member 'file' not described in 'iowarrior_read'
 drivers/usb/misc/iowarrior.c:279: warning: Function parameter or member 'buffer' not described in 'iowarrior_read'
 drivers/usb/misc/iowarrior.c:279: warning: Function parameter or member 'count' not described in 'iowarrior_read'
 drivers/usb/misc/iowarrior.c:279: warning: Function parameter or member 'ppos' not described in 'iowarrior_read'
 drivers/usb/misc/iowarrior.c:483: warning: Function parameter or member 'file' not described in 'iowarrior_ioctl'
 drivers/usb/misc/iowarrior.c:483: warning: Function parameter or member 'cmd' not described in 'iowarrior_ioctl'
 drivers/usb/misc/iowarrior.c:483: warning: Function parameter or member 'arg' not described in 'iowarrior_ioctl'
 drivers/usb/misc/iowarrior.c:599: warning: Function parameter or member 'inode' not described in 'iowarrior_open'
 drivers/usb/misc/iowarrior.c:599: warning: Function parameter or member 'file' not described in 'iowarrior_open'
 drivers/usb/misc/iowarrior.c:647: warning: Function parameter or member 'inode' not described in 'iowarrior_release'
 drivers/usb/misc/iowarrior.c:647: warning: Function parameter or member 'file' not described in 'iowarrior_release'
 drivers/usb/misc/iowarrior.c:753: warning: Function parameter or member 'interface' not described in 'iowarrior_probe'
 drivers/usb/misc/iowarrior.c:753: warning: Function parameter or member 'id' not described in 'iowarrior_probe'
 drivers/usb/misc/iowarrior.c:879: warning: Function parameter or member 'interface' not described in 'iowarrior_disconnect'

Cc: Johan Hovold <johan@kernel.org>
Cc: Christian Lucht <lucht@codemercs.com>
Cc: Stephane Dalton <sdalton@videotron.ca>
Cc: Stephane Doyon <s.doyon@videotron.ca>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Link: https://lore.kernel.org/r/20200703174148.2749969-26-lee.jones@linaro.orgSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Looks although Stephane's name was corrupted somehow.

Cc: Johan Hovold <johan@kernel.org>
Cc: Christian Lucht <lucht@codemercs.com>
Cc: Stephane Dalton <sdalton@videotron.ca>
Cc: Stephane Doyon <s.doyon@videotron.ca>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Link: https://lore.kernel.org/r/20200703174148.2749969-25-lee.jones@linaro.orgSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

No attempt has been made to document the demoted function here.

Fixes the following W=1 kernel build warning(s):

 drivers/usb/chipidea/usbmisc_imx.c:801: warning: Function parameter or member 'data' not described in 'imx7d_charger_detection'

Cc: Peter Chen <Peter.Chen@nxp.com>
Cc: Shawn Guo <shawnguo@kernel.org>
Cc: Sascha Hauer <s.hauer@pengutronix.de>
Cc: Pengutronix Kernel Team <kernel@pengutronix.de>
Cc: Fabio Estevam <festevam@gmail.com>
Cc: NXP Linux Team <linux-imx@nxp.com>
Cc: Richard Zhao <richard.zhao@freescale.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Link: https://lore.kernel.org/r/20200703174148.2749969-24-lee.jones@linaro.orgSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Fixes the following W=1 kernel build warning(s):

 drivers/usb/typec/tcpm/fusb302.c: In function ‘fusb302_log’:
 drivers/usb/typec/tcpm/fusb302.c:186:2: warning: function ‘fusb302_log’ might be a candidate for ‘gnu_printf’ format attribute [-Wsuggest-attribute=format]
 186 | _fusb302_log(chip, fmt, args);
 | ^~~~~~~~~~~~

Cc: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Cc: Yueyao Zhu <yueyao.zhu@gmail.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/20200703174148.2749969-23-lee.jones@linaro.orgSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

If the header file containing a function's prototype isn't included by
the sourcefile containing the associated function, the build system
complains of missing prototypes.

Fixes the following W=1 kernel build warning(s):

 drivers/usb/typec/altmodes/displayport.c:511:5: warning: no previous prototype for ‘dp_altmode_probe’ [-Wmissing-prototypes]
 drivers/usb/typec/altmodes/displayport.c:551:6: warning: no previous prototype for ‘dp_altmode_remove’ [-Wmissing-prototypes]

Cc: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Link: https://lore.kernel.org/r/20200703174148.2749969-22-lee.jones@linaro.orgSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Demote displayport's file header to a standard comment block.

Fixes the following W=1 kernel build warning(s):

 drivers/usb/typec/altmodes/displayport.c:18: warning: Function parameter or member '_dp' not described in 'DP_HEADER'
 drivers/usb/typec/altmodes/displayport.c:18: warning: Function parameter or member 'cmd' not described in 'DP_HEADER'

Cc: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Link: https://lore.kernel.org/r/20200703174148.2749969-21-lee.jones@linaro.orgSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

The return value of alauda_get_media_status() hasn't been checked
since the driver's inception back in 2005.  If nothing have gone
wrong/been detected until this point, it's probably safe to just
remove the variable.

Fixes the following W=1 kernel build warning(s):

 drivers/usb/storage/alauda.c: In function ‘alauda_check_media’:
 drivers/usb/storage/alauda.c:456:6: warning: variable ‘rc’ set but not used [-Wunused-but-set-variable]
 456 | int rc;
 | ^~

Cc: Alan Stern <stern@rowland.harvard.edu>
Cc: Daniel Drake <dsd@gentoo.org>
Cc: usb-storage@lists.one-eyed-alien.net
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Link: https://lore.kernel.org/r/20200703174148.2749969-20-lee.jones@linaro.orgSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Fixes the following W=1 kernel build warning(s):

 drivers/usb/host/xhci-debugfs.c:128:2: warning: function ‘xhci_debugfs_regset’ might be a candidate for ‘gnu_printf’ format attribute [-Wsuggest-attribute=format]
 128 | vsnprintf(rgs->name, sizeof(rgs->name), fmt, args);
 | ^~~~~~~~~

Cc: Mathias Nyman <mathias.nyman@intel.com>
Cc: Lu Baolu <baolu.lu@linux.intel.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Link: https://lore.kernel.org/r/20200703174148.2749969-19-lee.jones@linaro.orgSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Descriptions were missing for 'ci' almost throughout.  There was
one instance of over-documenting.  Finally one function argument
was incorrectly documented (probably down to bitrot).

Fixes the following W=1 kernel build warning(s):

 drivers/usb/chipidea/udc.c:245: warning: Function parameter or member 'ci' not described in 'hw_port_is_high_speed'
 drivers/usb/chipidea/udc.c:271: warning: Function parameter or member 'ci' not described in 'hw_test_and_clear_intr_active'
 drivers/usb/chipidea/udc.c:285: warning: Function parameter or member 'ci' not described in 'hw_test_and_clear_setup_guard'
 drivers/usb/chipidea/udc.c:296: warning: Function parameter or member 'ci' not described in 'hw_test_and_set_setup_guard'
 drivers/usb/chipidea/udc.c:321: warning: Function parameter or member 'ci' not described in 'hw_usb_reset'
 drivers/usb/chipidea/udc.c:628: warning: Excess function parameter 'ci' description in 'free_pending_td'
 drivers/usb/chipidea/udc.c:655: warning: Function parameter or member 'hwep' not described in '_hardware_dequeue'
 drivers/usb/chipidea/udc.c:655: warning: Excess function parameter 'gadget' description in '_hardware_dequeue'

Cc: Peter Chen <Peter.Chen@nxp.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Link: https://lore.kernel.org/r/20200703174148.2749969-18-lee.jones@linaro.orgSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Demote xhci-dbgtty's file header to a standard comment block.

Fixes the following W=1 kernel build warning(s):

 drivers/usb/host/xhci-dbgtty.c:19: warning: Function parameter or member 'port' not described in 'dbc_send_packet'
 drivers/usb/host/xhci-dbgtty.c:19: warning: Function parameter or member 'packet' not described in 'dbc_send_packet'
 drivers/usb/host/xhci-dbgtty.c:19: warning: Function parameter or member 'size' not described in 'dbc_send_packet'

Cc: Mathias Nyman <mathias.nyman@intel.com>
Cc: Lu Baolu <baolu.lu@linux.intel.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Link: https://lore.kernel.org/r/20200703174148.2749969-17-lee.jones@linaro.orgSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Demote xhci-dbgcap's file header to a standard comment block.

Fixes the following W=1 kernel build warning(s):

 drivers/usb/host/xhci-dbgcap.c:20: warning: Function parameter or member 'xhci' not described in 'dbc_dma_alloc_coherent'
 drivers/usb/host/xhci-dbgcap.c:20: warning: Function parameter or member 'size' not described in 'dbc_dma_alloc_coherent'
 drivers/usb/host/xhci-dbgcap.c:20: warning: Function parameter or member 'dma_handle' not described in 'dbc_dma_alloc_coherent'
 drivers/usb/host/xhci-dbgcap.c:20: warning: Function parameter or member 'flags' not described in 'dbc_dma_alloc_coherent'

Cc: Mathias Nyman <mathias.nyman@intel.com>
Cc: Lu Baolu <baolu.lu@linux.intel.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Link: https://lore.kernel.org/r/20200703174148.2749969-16-lee.jones@linaro.orgSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

No attempt has been made to document the demoted function here.

Fixes the following W=1 kernel build warning(s):

 drivers/usb/host/xhci-mem.c:365: warning: Function parameter or member 'xhci' not described in 'xhci_ring_alloc'
 drivers/usb/host/xhci-mem.c:365: warning: Function parameter or member 'num_segs' not described in 'xhci_ring_alloc'
 drivers/usb/host/xhci-mem.c:365: warning: Function parameter or member 'cycle_state' not described in 'xhci_ring_alloc'
 drivers/usb/host/xhci-mem.c:365: warning: Function parameter or member 'type' not described in 'xhci_ring_alloc'
 drivers/usb/host/xhci-mem.c:365: warning: Function parameter or member 'max_packet' not described in 'xhci_ring_alloc'
 drivers/usb/host/xhci-mem.c:365: warning: Function parameter or member 'flags' not described in 'xhci_ring_alloc'

Cc: Mathias Nyman <mathias.nyman@intel.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Link: https://lore.kernel.org/r/20200703174148.2749969-15-lee.jones@linaro.orgSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

No attempt has been made to document the demoted function here.

Fixes the following W=1 kernel build warning(s):

 drivers/usb/host/xhci.c:1285: warning: Function parameter or member 'desc' not described in 'xhci_get_endpoint_index'

Cc: Mathias Nyman <mathias.nyman@intel.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Link: https://lore.kernel.org/r/20200703174148.2749969-14-lee.jones@linaro.orgSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Help with adding the odd description where they have been omitted or
where the format isn't quite right.  Demote all function headers which
are lacking any attempt of describing their arguments.

Fixes the following W=1 kernel build warning(s):

 drivers/usb/chipidea/udc.c:645: warning: Function parameter or member 'hwreq' not described in '_hardware_dequeue'
 drivers/usb/chipidea/udc.c:645: warning: Excess function parameter 'gadget' description in '_hardware_dequeue'
 drivers/usb/chipidea/udc.c:1326: warning: Function parameter or member 'ep' not described in 'ep_enable'
 drivers/usb/chipidea/udc.c:1326: warning: Function parameter or member 'desc' not described in 'ep_enable'
 drivers/usb/chipidea/udc.c:1393: warning: Function parameter or member 'ep' not described in 'ep_disable'
 drivers/usb/chipidea/udc.c:1433: warning: Function parameter or member 'ep' not described in 'ep_alloc_request'
 drivers/usb/chipidea/udc.c:1433: warning: Function parameter or member 'gfp_flags' not described in 'ep_alloc_request'
 drivers/usb/chipidea/udc.c:1454: warning: Function parameter or member 'ep' not described in 'ep_free_request'
 drivers/usb/chipidea/udc.c:1454: warning: Function parameter or member 'req' not described in 'ep_free_request'
 drivers/usb/chipidea/udc.c:1488: warning: Function parameter or member 'ep' not described in 'ep_queue'
 drivers/usb/chipidea/udc.c:1488: warning: Function parameter or member 'req' not described in 'ep_queue'
 drivers/usb/chipidea/udc.c:1488: warning: Function parameter or member 'gfp_flags' not described in 'ep_queue'
 drivers/usb/chipidea/udc.c:1512: warning: Function parameter or member 'ep' not described in 'ep_dequeue'
 drivers/usb/chipidea/udc.c:1512: warning: Function parameter or member 'req' not described in 'ep_dequeue'
 drivers/usb/chipidea/udc.c:1556: warning: Function parameter or member 'ep' not described in 'ep_set_halt'
 drivers/usb/chipidea/udc.c:1556: warning: Function parameter or member 'value' not described in 'ep_set_halt'
 drivers/usb/chipidea/udc.c:1566: warning: Function parameter or member 'ep' not described in 'ep_set_wedge'
 drivers/usb/chipidea/udc.c:1586: warning: Function parameter or member 'ep' not described in 'ep_fifo_flush'
 drivers/usb/chipidea/udc.c:1610: warning: cannot understand function prototype: 'const struct usb_ep_ops usb_ep_ops = '
 drivers/usb/chipidea/udc.c:1629: warning: Function parameter or member '_gadget' not described in 'ci_hdrc_gadget_connect'
 drivers/usb/chipidea/udc.c:1629: warning: Function parameter or member 'is_active' not described in 'ci_hdrc_gadget_connect'
 drivers/usb/chipidea/udc.c:1780: warning: cannot understand function prototype: 'const struct usb_gadget_ops usb_gadget_ops = '
 drivers/usb/chipidea/udc.c:1931: warning: Function parameter or member 'gadget' not described in 'ci_udc_stop'
 drivers/usb/chipidea/udc.c:1965: warning: Function parameter or member 'ci' not described in 'udc_irq'
 drivers/usb/chipidea/udc.c:2095: warning: Function parameter or member 'ci' not described in 'ci_hdrc_gadget_destroy'
 drivers/usb/chipidea/udc.c:2144: warning: Function parameter or member 'ci' not described in 'ci_hdrc_gadget_init'

Cc: Peter Chen <Peter.Chen@nxp.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Link: https://lore.kernel.org/r/20200703174148.2749969-13-lee.jones@linaro.orgSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Looks like a very popular argument to omit descriptions for.

Fixes the following W=1 kernel build warning(s):

 drivers/usb/chipidea/udc.c:80: warning: Function parameter or member 'ci' not described in 'hw_device_state'
 drivers/usb/chipidea/udc.c:100: warning: Function parameter or member 'ci' not described in 'hw_ep_flush'
 drivers/usb/chipidea/udc.c:121: warning: Function parameter or member 'ci' not described in 'hw_ep_disable'
 drivers/usb/chipidea/udc.c:136: warning: Function parameter or member 'ci' not described in 'hw_ep_enable'
 drivers/usb/chipidea/udc.c:170: warning: Function parameter or member 'ci' not described in 'hw_ep_get_halt'
 drivers/usb/chipidea/udc.c:185: warning: Function parameter or member 'ci' not described in 'hw_ep_prime'
 drivers/usb/chipidea/udc.c:215: warning: Function parameter or member 'ci' not described in 'hw_ep_set_halt'
 drivers/usb/chipidea/udc.c:238: warning: Function parameter or member 'ci' not described in 'hw_port_is_high_speed'
 drivers/usb/chipidea/udc.c:251: warning: Function parameter or member 'ci' not described in 'hw_test_and_clear_complete'
 drivers/usb/chipidea/udc.c:263: warning: Function parameter or member 'ci' not described in 'hw_test_and_clear_intr_active'
 drivers/usb/chipidea/udc.c:277: warning: Function parameter or member 'ci' not described in 'hw_test_and_clear_setup_guard'
 drivers/usb/chipidea/udc.c:288: warning: Function parameter or member 'ci' not described in 'hw_test_and_set_setup_guard'
 drivers/usb/chipidea/udc.c:300: warning: Function parameter or member 'ci' not described in 'hw_usb_set_address'
 drivers/usb/chipidea/udc.c:312: warning: Function parameter or member 'ci' not described in 'hw_usb_reset'

Cc: Peter Chen <Peter.Chen@nxp.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Link: https://lore.kernel.org/r/20200703174148.2749969-12-lee.jones@linaro.orgSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

No attempt has been made to document any of the demoted functions here.

Fixes the following W=1 kernel build warning(s):

 drivers/usb/chipidea/debug.c:25: warning: Function parameter or member 's' not described in 'ci_device_show'
 drivers/usb/chipidea/debug.c:25: warning: Function parameter or member 'data' not described in 'ci_device_show'
 drivers/usb/chipidea/debug.c:54: warning: Function parameter or member 's' not described in 'ci_port_test_show'
 drivers/usb/chipidea/debug.c:54: warning: Function parameter or member 'data' not described in 'ci_port_test_show'
 drivers/usb/chipidea/debug.c:75: warning: Function parameter or member 'file' not described in 'ci_port_test_write'
 drivers/usb/chipidea/debug.c:75: warning: Function parameter or member 'ubuf' not described in 'ci_port_test_write'
 drivers/usb/chipidea/debug.c:75: warning: Function parameter or member 'count' not described in 'ci_port_test_write'
 drivers/usb/chipidea/debug.c:75: warning: Function parameter or member 'ppos' not described in 'ci_port_test_write'
 drivers/usb/chipidea/debug.c:122: warning: Function parameter or member 's' not described in 'ci_qheads_show'
 drivers/usb/chipidea/debug.c:122: warning: Function parameter or member 'data' not described in 'ci_qheads_show'
 drivers/usb/chipidea/debug.c:154: warning: Function parameter or member 's' not described in 'ci_requests_show'
 drivers/usb/chipidea/debug.c:154: warning: Function parameter or member 'data' not described in 'ci_requests_show'

Cc: Peter Chen <Peter.Chen@nxp.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Link: https://lore.kernel.org/r/20200703174148.2749969-11-lee.jones@linaro.orgSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Firstly we add some missing descriptions.  Then we fix some formatting
issues.  Kerneldoc expects arguments to be in the format '@.*: '.  If
either the '@' or ':' is omitted, kerneldoc gets confused.

Fixes the following W=1 kernel build warning(s):

 drivers/usb/chipidea/otg.c:29: warning: Function parameter or member 'ci' not described in 'hw_read_otgsc'
 drivers/usb/chipidea/otg.c:82: warning: Function parameter or member 'ci' not described in 'hw_write_otgsc'
 drivers/usb/chipidea/otg.c:235: warning: Function parameter or member 'ci' not described in 'ci_hdrc_otg_init'
 drivers/usb/chipidea/otg.c:254: warning: Function parameter or member 'ci' not described in 'ci_hdrc_otg_destroy'

Cc: Peter Chen <Peter.Chen@nxp.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Link: https://lore.kernel.org/r/20200703174148.2749969-10-lee.jones@linaro.orgSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Firstly, file headers should not be in kerneldoc format.  Function
args should be in the format '@.*: '.  We also take the time to
add some descriptions for various argument which have been
previously left out.  Finally we remove descriptions for absent
arguments.

Fixes the following W=1 kernel build warning(s):

 drivers/usb/gadget/udc/core.c:25: warning: Incorrect use of kernel-doc format:  * struct usb_udc - describes one usb device controller
 drivers/usb/gadget/udc/core.c:36: warning: cannot understand function prototype: 'struct usb_udc '
 drivers/usb/gadget/udc/core.c:901: warning: Function parameter or member 'ep' not described in 'usb_gadget_giveback_request'
 drivers/usb/gadget/udc/core.c:901: warning: Function parameter or member 'req' not described in 'usb_gadget_giveback_request'
 drivers/usb/gadget/udc/core.c:1098: warning: Function parameter or member 'udc' not described in 'usb_gadget_udc_stop'
 drivers/usb/gadget/udc/core.c:1098: warning: Excess function parameter 'gadget' description in 'usb_gadget_udc_stop'
 drivers/usb/gadget/udc/core.c:1098: warning: Excess function parameter 'driver' description in 'usb_gadget_udc_stop'

Cc: Felipe Balbi <balbi@kernel.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Link: https://lore.kernel.org/r/20200703174148.2749969-9-lee.jones@linaro.orgSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Fixes the following W=1 kernel build warning(s):

 drivers/usb/chipidea/core.c:163: warning: Function parameter or member 'ci' not described in 'hw_port_test_set'

Cc: Peter Chen <Peter.Chen@nxp.com>
Cc: David Lopo <dlopo@chipidea.mips.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Link: https://lore.kernel.org/r/20200703174148.2749969-8-lee.jones@linaro.orgSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

No attempt has been made to document any of the functions here.

Fixes the following W=1 kernel build warning(s):

 drivers/usb/misc/adutux.c:117: warning: Function parameter or member 'dev' not described in 'adu_abort_transfers'
 drivers/usb/misc/adutux.c:653: warning: Function parameter or member 'interface' not described in 'adu_probe'
 drivers/usb/misc/adutux.c:653: warning: Function parameter or member 'id' not described in 'adu_probe'
 drivers/usb/misc/adutux.c:762: warning: Function parameter or member 'interface' not described in 'adu_disconnect'

Cc: Johan Hovold <johan@kernel.org>
Cc: David Glance <davidgsf@sourceforge.net>
Cc: Juergen Stuber <stuber@loria.fr>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Link: https://lore.kernel.org/r/20200703174148.2749969-7-lee.jones@linaro.orgSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

No attempt has been made to document any of the functions here.

Fixes the following W=1 kernel build warning(s):

 drivers/usb/atm/ueagle-atm.c:578: warning: Function parameter or member 'usb' not described in 'uea_send_modem_cmd'
 drivers/usb/atm/ueagle-atm.c:578: warning: Function parameter or member 'addr' not described in 'uea_send_modem_cmd'
 drivers/usb/atm/ueagle-atm.c:578: warning: Function parameter or member 'size' not described in 'uea_send_modem_cmd'
 drivers/usb/atm/ueagle-atm.c:578: warning: Function parameter or member 'buff' not described in 'uea_send_modem_cmd'
 drivers/usb/atm/ueagle-atm.c:679: warning: Function parameter or member 'usb' not described in 'uea_load_firmware'
 drivers/usb/atm/ueagle-atm.c:679: warning: Function parameter or member 'ver' not described in 'uea_load_firmware'

Cc: Matthieu CASTET <castet.matthieu@free.fr>
Cc: Stanislaw Gruszka <stf_xl@wp.pl>
Cc: Damien Bergamini <damien.bergamini@free.fr>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Link: https://lore.kernel.org/r/20200703174148.2749969-6-lee.jones@linaro.orgSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

No attempt has been made to document any of the functions here.

Fixes the following W=1 kernel build warning(s):

 drivers/usb/core/ledtrig-usbport.c:42: warning: Function parameter or member 'usbport_data' not described in 'usbport_trig_usb_dev_observed'
 drivers/usb/core/ledtrig-usbport.c:42: warning: Function parameter or member 'usb_dev' not described in 'usbport_trig_usb_dev_observed'
 drivers/usb/core/ledtrig-usbport.c:71: warning: Function parameter or member 'usbport_data' not described in 'usbport_trig_update_count'
 drivers/usb/core/ledtrig-usbport.c:131: warning: Function parameter or member 'usbport_data' not described in 'usbport_trig_port_observed'
 drivers/usb/core/ledtrig-usbport.c:131: warning: Function parameter or member 'usb_dev' not described in 'usbport_trig_port_observed'
 drivers/usb/core/ledtrig-usbport.c:131: warning: Function parameter or member 'port1' not described in 'usbport_trig_port_observed'

Cc: Rafał Miłecki <rafal@milecki.pl>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Link: https://lore.kernel.org/r/20200703174148.2749969-4-lee.jones@linaro.orgSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

No attempt has been made to document the function here.

Fixes the following W=1 kernel build warning(s):

 drivers/usb/host/ohci-s3c2410.c:356: warning: Function parameter or member 'dev' not described in 'ohci_hcd_s3c2410_probe'

Cc: Alan Stern <stern@rowland.harvard.edu>
Cc: Kukjin Kim <kgene@kernel.org>
Cc: Krzysztof Kozlowski <krzk@kernel.org>
Cc: Roman Weissgaerber <weissg@vienna.at>
Cc: David Brownell <dbrownell@users.sourceforge.net>
Cc: Christopher Hoover <ch@hpl.hp.com>
Cc: Ben Dooks <ben@simtec.co.uk>
Cc: linux-samsung-soc@vger.kernel.org
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Link: https://lore.kernel.org/r/20200703174148.2749969-3-lee.jones@linaro.orgSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Without it, the build system complains that it was declared inside
the parameter list.

Fixes the following W=1 kernel build warning(s):

 In file included from drivers/usb/mtu3/mtu3_trace.c:11:
 drivers/usb/mtu3/mtu3_debug.h:29:36: warning: ‘struct ssusb_mtk’ declared inside parameter list will not be visible outside of this definition or declaration
 29 | void ssusb_dev_debugfs_init(struct ssusb_mtk *ssusb);
 | ^~~~~~~~~
 drivers/usb/mtu3/mtu3_debug.h:30:35: warning: ‘struct ssusb_mtk’ declared inside parameter list will not be visible outside of this definition or declaration
 30 | void ssusb_dr_debugfs_init(struct ssusb_mtk *ssusb);
 | ^~~~~~~~~
 drivers/usb/mtu3/mtu3_debug.h:31:39: warning: ‘struct ssusb_mtk’ declared inside parameter list will not be visible outside of this definition or declaration
 31 | void ssusb_debugfs_create_root(struct ssusb_mtk *ssusb);
 | ^~~~~~~~~
 drivers/usb/mtu3/mtu3_debug.h:32:39: warning: ‘struct ssusb_mtk’ declared inside parameter list will not be visible outside of this definition or declaration
 32 | void ssusb_debugfs_remove_root(struct ssusb_mtk *ssusb);
 | ^~~~~~~~~

Cc: Chunfeng Yun <chunfeng.yun@mediatek.com>
Cc: linux-mediatek@lists.infradead.org
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Link: https://lore.kernel.org/r/20200703174148.2749969-2-lee.jones@linaro.orgSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

The EHCI OMAP driver includes <linux/gpio.h> but does not use
any symbols from this file, so drop it.

Cc: Roger Quadros <rogerq@ti.com>
Cc: Tony Lindgren <tony@atomide.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Link: https://lore.kernel.org/r/20200703131059.515436-1-linus.walleij@linaro.orgSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Silence documentation  build warning by correcting  kernel-doc comment
for sub_validate_langid function.

./drivers/usb/gadget/usbstring.c:77: warning: Function parameter or member 'langid' not described in 'usb_validate_langid'
./drivers/usb/gadget/usbstring.c:77: warning: Excess function parameter 'lang' description in 'usb_validate_langid'
Signed-off-by: Colton Lewis <colton.w.lewis@protonmail.com>
Link: https://lore.kernel.org/r/20200707045207.235540-1-colton.w.lewis@protonmail.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

The value of 'maxsize' has not been checked since commit 729cac69
("usb: dwc2: Change ISOC DDMA flow") back in 2018, so remove the set but
unused variable, which fixes the following W=1 kernel build warning:

 drivers/usb/dwc2/gadget.c: In function ‘dwc2_gadget_fill_isoc_desc’:
 drivers/usb/dwc2/gadget.c:885:6: warning: variable ‘maxsize’ set but not used [-Wunused-but-set-variable]
 885 | u32 maxsize = 0;
 | ^~~~~~~

Cc: Minas Harutyunyan <hminas@synopsys.com>
Cc: Ben Dooks <ben@simtec.co.uk>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Link: https://lore.kernel.org/r/20200702144625.2533530-11-lee.jones@linaro.orgSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

No idea why this driver is using a char device node, statically
allocated, with no dynamic allocation or hook up with devtmpfs, along
with a reserverd major number, for "special" operations, not all of
which ever were implemented.

So just rip it out, as no one must be using it because no modern system
will ever actually create the /dev/ node it needs.

Cc: Felipe Balbi <balbi@kernel.org>
Reviewed-by: Ran Wang <ran.wang_1@nxp.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Link: https://lore.kernel.org/r/20200702072914.1072878-2-gregkh@linuxfoundation.orgSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

This file has a HUGE debugging sysfs file that spews out a lot of
information all at once, which violates the one-value-per-file rule for
sysfs.  If this is really needed, it should go into debugfs, but given
the age of this driver, I strongly doubt anyone is using it anymore.

So just remove the file entirely, it was never documented, so obviously,
no one actually needed it :)

Cc: Felipe Balbi <balbi@kernel.org>
Reviewed-by: Ran Wang <ran.wang_1@nxp.com>
Link: https://lore.kernel.org/r/20200702072914.1072878-1-gregkh@linuxfoundation.orgSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Add freescale USB PHY driver entry
Signed-off-by: Peter Chen <peter.chen@nxp.com>
Link: https://lore.kernel.org/r/20200703063924.29799-1-peter.chen@nxp.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

If we assign 'epnum' during the declaration we can also avoid "ISO
C90 forbids mixed declarations" issues.  So it does looks like we
can have our cake and eat it in this scenario.

Fixes the following W=1 kernel build warning(s):

 drivers/usb/host/oxu210hp-hcd.c: In function ‘submit_async’:
 drivers/usb/host/oxu210hp-hcd.c:2040:19: warning: variable ‘qtd’ set but not used [-Wunused-but-set-variable]
 2040 | struct ehci_qtd *qtd;
 | ^~~

Cc: Masahiro Yamada <yamada.masahiro@socionext.com>
Cc: Rodolfo Giometti <giometti@linux.it>
Cc: "Eurotech S.p.A" <info@eurtech.it>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Link: https://lore.kernel.org/r/20200702144625.2533530-24-lee.jones@linaro.orgSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

No attempt has been made to document any of the functions here.

Fixes the following W=1 kernel build warning(s):

 drivers/usb/c67x00/c67x00-sched.c:35: warning: Function parameter or member 'queue' not described in 'c67x00_ep_data'
 drivers/usb/c67x00/c67x00-sched.c:35: warning: Function parameter or member 'node' not described in 'c67x00_ep_data'
 drivers/usb/c67x00/c67x00-sched.c:35: warning: Function parameter or member 'hep' not described in 'c67x00_ep_data'
 drivers/usb/c67x00/c67x00-sched.c:35: warning: Function parameter or member 'dev' not described in 'c67x00_ep_data'
 drivers/usb/c67x00/c67x00-sched.c:35: warning: Function parameter or member 'next_frame' not described in 'c67x00_ep_data'
 drivers/usb/c67x00/c67x00-sched.c:71: warning: Function parameter or member 'ly_base_addr' not described in 'c67x00_td'
 drivers/usb/c67x00/c67x00-sched.c:71: warning: Function parameter or member 'port_length' not described in 'c67x00_td'
 drivers/usb/c67x00/c67x00-sched.c:71: warning: Function parameter or member 'pid_ep' not described in 'c67x00_td'
 drivers/usb/c67x00/c67x00-sched.c:71: warning: Function parameter or member 'dev_addr' not described in 'c67x00_td'
 drivers/usb/c67x00/c67x00-sched.c:71: warning: Function parameter or member 'ctrl_reg' not described in 'c67x00_td'
 drivers/usb/c67x00/c67x00-sched.c:71: warning: Function parameter or member 'status' not described in 'c67x00_td'
 drivers/usb/c67x00/c67x00-sched.c:71: warning: Function parameter or member 'retry_cnt' not described in 'c67x00_td'
 drivers/usb/c67x00/c67x00-sched.c:71: warning: Function parameter or member 'residue' not described in 'c67x00_td'
 drivers/usb/c67x00/c67x00-sched.c:71: warning: Function parameter or member 'next_td_addr' not described in 'c67x00_td'
 drivers/usb/c67x00/c67x00-sched.c:71: warning: Function parameter or member 'td_list' not described in 'c67x00_td'
 drivers/usb/c67x00/c67x00-sched.c:71: warning: Function parameter or member 'td_addr' not described in 'c67x00_td'
 drivers/usb/c67x00/c67x00-sched.c:71: warning: Function parameter or member 'data' not described in 'c67x00_td'
 drivers/usb/c67x00/c67x00-sched.c:71: warning: Function parameter or member 'urb' not described in 'c67x00_td'
 drivers/usb/c67x00/c67x00-sched.c:71: warning: Function parameter or member 'privdata' not described in 'c67x00_td'
 drivers/usb/c67x00/c67x00-sched.c:71: warning: Function parameter or member 'ep_data' not described in 'c67x00_td'
 drivers/usb/c67x00/c67x00-sched.c:71: warning: Function parameter or member 'pipe' not described in 'c67x00_td'
 drivers/usb/c67x00/c67x00-sched.c:137: warning: Function parameter or member 'c67x00' not described in 'dbg_td'
 drivers/usb/c67x00/c67x00-sched.c:137: warning: Function parameter or member 'td' not described in 'dbg_td'
 drivers/usb/c67x00/c67x00-sched.c:137: warning: Function parameter or member 'msg' not described in 'dbg_td'
 drivers/usb/c67x00/c67x00-sched.c:169: warning: Function parameter or member 'a' not described in 'frame_add'
 drivers/usb/c67x00/c67x00-sched.c:169: warning: Function parameter or member 'b' not described in 'frame_add'
 drivers/usb/c67x00/c67x00-sched.c:177: warning: Function parameter or member 'a' not described in 'frame_after'
 drivers/usb/c67x00/c67x00-sched.c:177: warning: Function parameter or member 'b' not described in 'frame_after'
 drivers/usb/c67x00/c67x00-sched.c:186: warning: Function parameter or member 'a' not described in 'frame_after_eq'
 drivers/usb/c67x00/c67x00-sched.c:186: warning: Function parameter or member 'b' not described in 'frame_after_eq'
 drivers/usb/c67x00/c67x00-sched.c:199: warning: Function parameter or member 'c67x00' not described in 'c67x00_release_urb'
 drivers/usb/c67x00/c67x00-sched.c:199: warning: Function parameter or member 'urb' not described in 'c67x00_release_urb'
 drivers/usb/c67x00/c67x00-sched.c:566: warning: Function parameter or member 'c67x00' not described in 'c67x00_create_td'
 drivers/usb/c67x00/c67x00-sched.c:566: warning: Function parameter or member 'urb' not described in 'c67x00_create_td'
 drivers/usb/c67x00/c67x00-sched.c:566: warning: Function parameter or member 'data' not described in 'c67x00_create_td'
 drivers/usb/c67x00/c67x00-sched.c:566: warning: Function parameter or member 'len' not described in 'c67x00_create_td'
 drivers/usb/c67x00/c67x00-sched.c:566: warning: Function parameter or member 'pid' not described in 'c67x00_create_td'
 drivers/usb/c67x00/c67x00-sched.c:566: warning: Function parameter or member 'toggle' not described in 'c67x00_create_td'
 drivers/usb/c67x00/c67x00-sched.c:566: warning: Function parameter or member 'privdata' not described in 'c67x00_create_td'
 drivers/usb/c67x00/c67x00-sched.c:692: warning: Function parameter or member 'c67x00' not described in 'c67x00_add_ctrl_urb'
 drivers/usb/c67x00/c67x00-sched.c:692: warning: Function parameter or member 'urb' not described in 'c67x00_add_ctrl_urb'
 drivers/usb/c67x00/c67x00-sched.c:830: warning: Function parameter or member 'c67x00' not described in 'c67x00_parse_td'
 drivers/usb/c67x00/c67x00-sched.c:830: warning: Function parameter or member 'td' not described in 'c67x00_parse_td'
 drivers/usb/c67x00/c67x00-sched.c:978: warning: Function parameter or member 'c67x00' not described in 'c67x00_check_td_list'
 drivers/usb/c67x00/c67x00-sched.c:1052: warning: Function parameter or member 'c67x00' not described in 'c67x00_send_td'
 drivers/usb/c67x00/c67x00-sched.c:1052: warning: Function parameter or member 'td' not described in 'c67x00_send_td'
 drivers/usb/c67x00/c67x00-sched.c:1088: warning: Function parameter or member 'c67x00' not described in 'c67x00_do_work'

Cc: Peter Korsgaard <jacmet@sunsite.dk>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Link: https://lore.kernel.org/r/20200702144625.2533530-31-lee.jones@linaro.orgSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Demote usbtmc's file header to a standard comment block.

Fixes the following W=1 kernel build warning(s):

 drivers/usb/class/usbtmc.c:11: warning: Function parameter or member 'fmt' not described in 'pr_fmt'
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Link: https://lore.kernel.org/r/20200702144625.2533530-30-lee.jones@linaro.orgSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

No attempt has been made to document any of the functions here.

Fixes the following W=1 kernel build warning(s):

 drivers/usb/c67x00/c67x00-ll-hpi.c:269: warning: Function parameter or member 'sie' not described in 'c67x00_ll_usb_clear_status'
 drivers/usb/c67x00/c67x00-ll-hpi.c:269: warning: Function parameter or member 'bits' not described in 'c67x00_ll_usb_clear_status'
 drivers/usb/c67x00/c67x00-ll-hpi.c:404: warning: Function parameter or member 'dev' not described in 'c67x00_ll_write_mem_le16'
 drivers/usb/c67x00/c67x00-ll-hpi.c:404: warning: Function parameter or member 'addr' not described in 'c67x00_ll_write_mem_le16'
 drivers/usb/c67x00/c67x00-ll-hpi.c:404: warning: Function parameter or member 'data' not described in 'c67x00_ll_write_mem_le16'
 drivers/usb/c67x00/c67x00-ll-hpi.c:404: warning: Function parameter or member 'len' not described in 'c67x00_ll_write_mem_le16'
 drivers/usb/c67x00/c67x00-ll-hpi.c:443: warning: Function parameter or member 'dev' not described in 'c67x00_ll_read_mem_le16'
 drivers/usb/c67x00/c67x00-ll-hpi.c:443: warning: Function parameter or member 'addr' not described in 'c67x00_ll_read_mem_le16'
 drivers/usb/c67x00/c67x00-ll-hpi.c:443: warning: Function parameter or member 'data' not described in 'c67x00_ll_read_mem_le16'
 drivers/usb/c67x00/c67x00-ll-hpi.c:443: warning: Function parameter or member 'len' not described in 'c67x00_ll_read_mem_le16'

Cc: Peter Korsgaard <jacmet@sunsite.dk>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Link: https://lore.kernel.org/r/20200702144625.2533530-27-lee.jones@linaro.orgSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

No attempt has been made to document the function.

Fixes the following W=1 kernel build warning(s):

 drivers/usb/mtu3/mtu3_core.c:805: warning: Function parameter or member 'mtu' not described in 'mtu3_set_dma_mask'

Cc: Chunfeng Yun <chunfeng.yun@mediatek.com>
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-mediatek@lists.infradead.org
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Link: https://lore.kernel.org/r/20200702144625.2533530-26-lee.jones@linaro.orgSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

'zlp' was documented, but in the wrong place.

Fixes the following W=1 kernel build warning(s):

 drivers/usb/cdns3/ep0.c:36: warning: Function parameter or member 'zlp' not described in 'cdns3_ep0_run_transfer'
 drivers/usb/cdns3/ep0.c:705: warning: Excess function parameter 'zlp' description in 'cdns3_gadget_ep0_queue'

Cc: Pawel Laszczak <pawell@cadence.com>
Cc: Pawel Jez <pjez@cadence.com>
Cc: Peter Chen <peter.chen@nxp.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Link: https://lore.kernel.org/r/20200702144625.2533530-23-lee.jones@linaro.orgSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/usb/host/ohci.h in included by a whole much of different
sourcefiles.  Not all of them make use of cc_to_error.  So mark
it as __maybe_used to convey that this behaviour is not only
acceptable it's expected.

Fixes the following kernel build warning(s):

 In file included from drivers/usb/host/ohci-pci.c:25:
 drivers/usb/host/ohci.h:165:18: warning: ‘cc_to_error’ defined but not used [-Wunused-const-variable=]
 165 | static const int cc_to_error 1 = {
 | ^~~~~~~~~~~
 In file included from drivers/usb/host/ohci-platform.c:32:
 drivers/usb/host/ohci.h:165:18: warning: ‘cc_to_error’ defined but not used [-Wunused-const-variable=]
 165 | static const int cc_to_error 1 = {
 | ^~~~~~~~~~~
 In file included from drivers/usb/host/ohci-exynos.c:20:
 drivers/usb/host/ohci.h:165:18: warning: ‘cc_to_error’ defined but not used [-Wunused-const-variable=]
 165 | static const int cc_to_error 1 = {
 | ^~~~~~~~~~~
 In file included from drivers/usb/host/ohci-spear.c:22:
 drivers/usb/host/ohci.h:165:18: warning: ‘cc_to_error’ defined but not used [-Wunused-const-variable=]
 165 | static const int cc_to_error 1 = {
 | ^~~~~~~~~~~
 In file included from drivers/usb/host/ohci-st.c:26:
 drivers/usb/host/ohci.h:165:18: warning: ‘cc_to_error’ defined but not used [-Wunused-const-variable=]
 165 | static const int cc_to_error 1 = {
 | ^~~~~~~~~~~
 In file included from drivers/usb/host/ohci-at91.c:31:
 drivers/usb/host/ohci.h:165:18: warning: ‘cc_to_error’ defined but not used [-Wunused-const-variable=]
 165 | static const int cc_to_error 1 = {
 | ^~~~~~~~~~~
 In file included from drivers/usb/host/ohci-s3c2410.c:32:
 drivers/usb/host/ohci.h:165:18: warning: ‘cc_to_error’ defined but not used [-Wunused-const-variable=]
 165 | static const int cc_to_error 1 = {
 | ^~~~~~~~~~~

Cc: Alan Stern <stern@rowland.harvard.edu>
Cc: Roman Weissgaerber <weissg@vienna.at>
Cc: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Link: https://lore.kernel.org/r/20200702144625.2533530-22-lee.jones@linaro.orgSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Neither usb_hcd_at91_probe() nor usb_hcd_at91_remove()'s function
headers reach the standards required of a kerneldoc entry.  Only
one attempt at describing an argument was made, as it is not
correct (we're removing that too to save confusion).

Fixes the following kernel build warning(s):

 drivers/usb/host/ohci-at91.c:166: warning: Function parameter or member 'driver' not described in 'usb_hcd_at91_probe'
 drivers/usb/host/ohci-at91.c:166: warning: Function parameter or member 'pdev' not described in 'usb_hcd_at91_probe'
 drivers/usb/host/ohci-at91.c:259: warning: Function parameter or member 'hcd' not described in 'usb_hcd_at91_remove'
 drivers/usb/host/ohci-at91.c:259: warning: Function parameter or member 'pdev' not described in 'usb_hcd_at91_remove'
 drivers/usb/host/ohci-at91.c:259: warning: Excess function parameter 'dev' description in 'usb_hcd_at91_remove'

Cc: Alan Stern <stern@rowland.harvard.edu>
Cc: Nicolas Ferre <nicolas.ferre@microchip.com>
Cc: Alexandre Belloni <alexandre.belloni@bootlin.com>
Cc: Ludovic Desroches <ludovic.desroches@microchip.com>
Cc: Thibaut VARENE <varenet@parisc-linux.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Link: https://lore.kernel.org/r/20200702144625.2533530-21-lee.jones@linaro.orgSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>