- 22 Jul, 2008 12 commits
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Roland Dreier authored
MTT entries are allocated with a buddy allocator, which just keeps bitmaps for each level of the buddy table. However, all free space starts out at the highest order, and small allocations start scanning from the lowest order. When the lowest order tables have no free space, this can lead to scanning potentially millions of bits before finding a free entry at a higher order. We can avoid this by just keeping a count of how many free entries each order has, and skipping the bitmap scan when an order is completely empty. This provides a nice performance boost for a negligible increase in memory usage. Signed-off-by:Roland Dreier <rolandd@cisco.com>
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Jack Morgenstein authored
Add ICM_ERROR firmware status code. In mapping to errnos, -ENFILE seems closest. This is in preparation for providing more detailed log info using mlx4_err() in low-level driver when a non-zero status is returned. Signed-off-by:
Jack Morgenstein <jackm@dev.mellanox.co.il> Signed-off-by:
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Roland Dreier authored
Make the struct name consistent with other WQE segment struct types defined in <linux/mlx4/qp.h>. Signed-off-by: -
Jack Morgenstein authored
Add a module parameter "enable_qos" to mlx4_core. If this param is set, enable support for QoS in the INIT_HCA command. By default, the parameter is set to 0 (disabled). Signed-off-by:
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Mathieu Desnoyers authored
When a kernel was rebuilt, the previous Module.markers was not cleared. It caused markers with different format strings to appear as duplicates when a markers was changed. This problem is present since scripts/mod/modpost.c started to generate Module.markers, commit b2e3e658 It therefore applies to 2.6.25, 2.6.26 and linux-next. I merely merged the patches from Roland, Wenji and Takashi here. Credits to Roland McGrath <roland@redhat.com> Wenji Huang <wenji.huang@oracle.com> and Takashi Nishiie <t-nishiie@np.css.fujitsu.com> for providing the individual fixes. - Changelog : - Integrated Takashi's Makefile modification to clear Module.markers upon make clean. Signed-off-by:
Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca> Cc: Roland McGrath <roland@redhat.com> Cc: Wenji Huang <wenji.huang@oracle.com> Cc: Takashi Nishiie <t-nishiie@np.css.fujitsu.com> Cc: <stable@kernel.org> [2.6.25.x, 2.6.26.x] Signed-off-by:
Andrew Morton <akpm@linux-foundation.org> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
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Atsushi Nemoto authored
Add missing cond_syscall() entry for compat_sys_epoll_pwait. Signed-off-by:
Atsushi Nemoto <anemo@mba.ocn.ne.jp> Cc: Davide Libenzi <davidel@xmailserver.org> Cc: <stable@kernel.org> [2.6.25.x, 2.6.26.x] Signed-off-by:
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Rajiv Andrade authored
Signed-off-by:
Rajiv Andrade <srajiv@linux.vnet.ibm.com> Signed-off-by:
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Alexey Dobriyan authored
struct pagemap_walk was placed on stack, some hooks are initialized, the rest (->pgd_entry, ->pud_entry, ->pte_entry) are valid but junk. Reported-by:
Eric Sesterhenn <snakebyte@gmx.de> Signed-off-by:
Alexey Dobriyan <adobriyan@gmail.com> Cc: "Vegard Nossum" <vegard.nossum@gmail.com> Cc: <stable@kernel.org> [2.6.25.x, 2.6.26.x] Signed-off-by:
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Miao Xie authored
Fix wrong domain attr updates, or we will always update the first sched domain attr. Signed-off-by:
Miao Xie <miaox@cn.fujitsu.com> Cc: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com> Cc: Paul Jackson <pj@sgi.com> Cc: Nick Piggin <nickpiggin@yahoo.com.au> Cc: Ingo Molnar <mingo@elte.hu> Cc: <stable@kernel.org> [2.6.26.x] Signed-off-by:
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David Brownell authored
Two small updates to the pcf857x driver: (a) the max732[89] chips are also second sources for the pcf8574/a, and (b) add a mutex to prevent trashing the cached state. Adding the lock is effectively a bugfix, although it seems unlikely that anyone would have run into the issue it protects against. Signed-off-by:
David Brownell <dbrownell@users.sourceforge.net> Signed-off-by:
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Juergen Beisert authored
Maxim's MAX7301 is an SPI GPIO expander with 28 GPIOs. Note: MAX7301's interrupt feature is not supported yet. [akpm@linux-foundation.org: coding-style fixes] [g.liakhovetski@pengutronix.de: Fix inaccuracies in comments, check spi_setup() return code, mask off high byte in max7301_read()] Signed-off-by:
Juergen Beisert <j.beisert@pengutronix.de> Signed-off-by:
Guennadi Liakhovetski <g.liakhovetski@pengutronix.de> Cc: Russell King <rmk@arm.linux.org.uk> Signed-off-by:
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John Reiser authored
The Linux kernel puts the filename argument of execve() into the new address space. Many developers are surprised to learn this. Those who know and could use it, object "But it's not documented." Those who want to use it dislike the expression (char *)(1+ strlen(env[-1+ n_env]) + env[-1+ n_env]) because it requires locating the last original environment variable, and assumes that the filename follows the characters. This patch documents the insertion of the filename, and makes it easier to find by adding a new tag AT_EXECFN in the ElfXX_auxv_t; see <elf.h>. In many cases readlink("/proc/self/exe",) gives the same answer. But if all the original pages get unmapped, then the kernel erases the symlink for /proc/self/exe. This can happen when a program decompressor does a good job of cleaning up after uncompressing directly to memory, so that the address space of the target program looks the same as if compression had never happened. One example is http://upx.sourceforge.net . One notable use of the underlying concept (what path containED the executable) is glibc expanding $ORIGIN in DT_RUNPATH. In practice for the near term, it may be a good idea for user-mode code to use both /proc/self/exe and AT_EXECFN as fall-back methods for each other. /proc/self/exe can fail due to unmapping, AT_EXECFN can fail because it won't be present on non-new systems. The auxvec or {AT_EXECFN}.d_val also can get overwritten, although in nearly all cases this would be the result of a bug. The runtime cost is one NEW_AUX_ENT using two words of stack space. The underlying value is maintained already as bprm->exec; setup_arg_pages() in fs/exec.c slides it for stack_shift, etc. Signed-off-by:John Reiser <jreiser@BitWagon.com> Cc: Roland McGrath <roland@redhat.com> Cc: Jakub Jelinek <jakub@redhat.com> Cc: Ulrich Drepper <drepper@redhat.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by:
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- 21 Jul, 2008 28 commits
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6Linus Torvalds authored
* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6: (100 commits) usb-storage: revert DMA-alignment change for Wireless USB USB: use reset_resume when normal resume fails usb_gadget: composite cdc gadget fault handling usb gadget: minor USBCV fix for composite framework USB: Fix bug with byte order in isp116x-hcd.c fio write/read USB: fix double kfree in ipaq in error case USB: fix build error in cdc-acm for CONFIG_PM=n USB: remove board-specific UP2OCR configuration from pxa27x-udc USB: EHCI: Reconciling USB register differences on MPC85xx vs MPC83xx USB: Fix pointer/int cast in USB devio code usb gadget: g_cdc dependso on NET USB: Au1xxx-usb: suspend/resume support. USB: Au1xxx-usb: clean up ohci/ehci bus glue sources. usbfs: don't store bad pointers in registration usbfs: fix race between open and unregister usbfs: simplify the lookup-by-minor routines usbfs: send disconnect signals when device is unregistered USB: Force unbinding of drivers lacking reset_resume or other methods USB: ohci-pnx4008: I2C cleanups and fixes USB: debug port converter does not accept more than 8 byte packets ...
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Alan Stern authored
This patch (as1110) reverts an earlier patch meant to help with Wireless USB host controllers. These controllers can have bulk maxpacket values larger than 512, which puts unusual constraints on the sizes of scatter-gather list elements. However it turns out that the block layer does not provide the support we need to enforce these constraints; merely changing the DMA alignment mask doesn't help. Hence there's no reason to keep the original patch. The Wireless USB problem will have to be solved a different way. In addition, there is a reason to get rid of the earlier patch. By dereferencing a pointer stored in the ep_in array of struct usb_device, the current code risks an invalid memory access when it runs concurrently with device removal. The members of that array are cleared before the driver's disconnect method is called, so it should not try to use them. Signed-off-by:
Alan Stern <stern@rowland.harvard.edu> Signed-off-by:
Greg Kroah-Hartman <gregkh@suse.de>
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Alan Stern authored
This patch (as1109b) makes USB-Persist more resilient to errors. With the current code, if a normal resume fails, it's an unrecoverable error. With the patch, if a normal resume fails (and if the device is enabled for USB-Persist) then a reset-resume is tried. This fixes the problem reported in Bugzilla #10977. Signed-off-by:
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David Brownell authored
These two fixes ensure the new "CDC Composite Device" gadget fails cleanly when it's loaded on hardware that can't support this particular gadget driver. Signed-off-by:
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David Lopo authored
Fill in a reserved/unused device qualifier field to ensure that the USBCV tests will always pass. Signed-off-by:
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Julien May authored
URB payload data are transfered in wrong byte order on a big endinan architecture (AVR32). Signed-off-by:
Julien May <mailinglist@miromico.ch> Signed-off-by:
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Oliver Neukum authored
in the error case the ipaq driver leaves a dangling pointer to already freed memory that will be freed again. Signed-off-by:
Oliver Neukum <oneukum@suse.de> Signed-off-by:
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Oliver Neukum authored
Here's the fix. cdc-wdm has the same problem. The fix is the same. Signed-off-by:
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Daniel Ribeiro authored
Remove the board-specific UP2OCR configuration from the pxa27x-udc driver. Signed-off-by:
Daniel Ribeiro <drwyrm@gmail.com> Signed-off-by:
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Srikanth Srinivasan authored
A couple of USB register initializations had to be changed on MPC85xx platforms. This is due to the internal SoC buses being different on MPC83xx SoCs vs MPC85xx SoCs. We currently handle this via an ifdef since 83xx and 85xx are mutually exclusive kernel builds. Signed-off-by:
Srikanth Srinivasan <srikanth.srinivasan@freescale.com> Signed-off-by:
Kumar Gala <galak@kernel.crashing.org> Signed-off-by:
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David Howells authored
Fix pointer/int cast in USB devio code, and thus avoid a compiler warning. A void* data argument passed to bus_find_device() and thence to match_devt() is used to carry a 32-bit datum. However, casting directly between a u32 and a pointer is not permitted - there must be an intermediate cast via (unsigned) long. This was introduced by the following patch: commit 94b1c9fa060ece2c8f080583beb6cc6008e41413 Author: Alan Stern <stern@rowland.harvard.edu> Date: Tue Jun 24 14:47:12 2008 -0400 usbfs: simplify the lookup-by-minor routines This patch (as1105) simplifies the lookup-by-minor-number code in usbfs. Instead of passing the minor number to the callback, which must then reconstruct the entire dev_t value, the patch passes the dev_t value directly. Signed-off-by:
David Howells <dhowells@redhat.com> Cc: Alan Stern <stern@rowland.harvard.edu> Signed-off-by:
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Randy Dunlap authored
g_cdc needs to depend on NET, otherwise net-related build errors happen: ERROR: "netif_carrier_on" [drivers/usb/gadget/g_cdc.ko] undefined! ERROR: "netif_carrier_off" [drivers/usb/gadget/g_cdc.ko] undefined! ERROR: "netif_rx" [drivers/usb/gadget/g_cdc.ko] undefined! ERROR: "alloc_etherdev_mq" [drivers/usb/gadget/g_cdc.ko] undefined! ERROR: "free_netdev" [drivers/usb/gadget/g_cdc.ko] undefined! ERROR: "register_netdev" [drivers/usb/gadget/g_cdc.ko] undefined! ERROR: "print_mac" [drivers/usb/gadget/g_cdc.ko] undefined! ERROR: "dev_kfree_skb_any" [drivers/usb/gadget/g_cdc.ko] undefined! ERROR: "__alloc_skb" [drivers/usb/gadget/g_cdc.ko] undefined! ERROR: "eth_type_trans" [drivers/usb/gadget/g_cdc.ko] undefined! ERROR: "unregister_netdev" [drivers/usb/gadget/g_cdc.ko] undefined! ERROR: "__netif_schedule" [drivers/usb/gadget/g_cdc.ko] undefined! ERROR: "skb_put" [drivers/usb/gadget/g_cdc.ko] undefined! Signed-off-by:
Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by:
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Manuel Lauss authored
Copy the OHCI/EHCI PM callbacks of the PCI implementation since they work equally well on Au1xxx hardware. Tested on Au1200. Signed-off-by:
Manuel Lauss <mano@roarinelk.homelinux.net> Cc: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by:
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Manuel Lauss authored
- Fold multiple probe/remove callbacks into one function; - minor style fixes, no functional changes. Tested on Au1200. Signed-off-by:
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Alan Stern authored
This patch (as1107) fixes a small bug in the usbfs registration and unregistration code. It avoids leaving an error value stored in the device's usb_classdev field and it avoids trying to unregister a NULL pointer. (It also fixes a rather extreme overuse of whitespace.) Signed-off-by:
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Alan Stern authored
This patch (as1106) fixes a race between opening and unregistering device files in usbfs. The current code drops its reference to the device and then reacquires it, ignoring the possibility that the device structure might have been removed in the meantime. It also doesn't check whether the device is already in the NOTATTACHED state when the file is opened. Signed-off-by:
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Alan Stern authored
This patch (as1105) simplifies the lookup-by-minor-number code in usbfs. Instead of passing the minor number to the callback, which must then reconstruct the entire dev_t value, the patch passes the dev_t value directly. Signed-off-by:
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Alan Stern authored
USB device files are accessible in two ways: as files in usbfs and as character device nodes. The two paths are supposed to behave identically, but they don't. When the underlying USB device is unplugged, disconnect signals are sent to processes with open usbfs files (if they requested these signals) but not to processes with open device node files. This patch (as1104) fixes the bug by moving the disconnect-signalling code into a common subroutine which is called from both paths. Putting this subroutine in devio.c removes the only out-of-file reference to struct dev_state, and so the structure's declaration can be moved from usb.h into devio.c. Finally, the new subroutine performs one extra action: It kills all the outstanding async URBs. (I'd kill the outstanding synchronous URBs too, if there was any way to do it.) In the past this hasn't mattered much, because devices were unregistered from usbfs only when they were disconnected. But now the unregistration can also occur whenever devices are unbound from the usb_generic driver. At any rate, killing URBs when a device is unregistered from usbfs seems like a good thing to do. Signed-off-by:
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Alan Stern authored
This patch (as1024) takes care of a FIXME issue: Drivers that don't have the necessary suspend, resume, reset_resume, pre_reset, or post_reset methods will be unbound and their interface reprobed when one of the unsupported events occurs. This is made slightly more difficult by the fact that bind operations won't work during a system sleep transition. So instead the code has to defer the operation until the transition ends. Signed-off-by:
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Jean Delvare authored
Various cleanups and fixes to the i2c code in ohci-pnx4008: * Delete empty isp1301_command. The i2c driver command implementation is optional, so there's no point in providing an empty implementation. * Give a name to isp1301_driver. I'm surprised that i2c-core accepted to register this driver at all. I've chosen "isp1301_pnx" as the name, because it's not a generic ISP1301 driver (much like the isp1301_omap driver.) We might want to make the name even more specific (but "isp1301_ohci_pnx4008" doesn't fit.) * The ISP1301 is definitely not a hardware monitoring device. * Fix a memory leak on failure in isp1301_attach. If i2c_attach_client fails, the client is not registered so isp1301_detach is never called and the i2c_client memory is lost. * Use strlcpy instead of strcpy. Signed-off-by:
Jean Delvare <khali@linux-fr.org> Cc: Vitaly Wool <vitalywool@gmail.com> Cc: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by:
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Aleksey Gorelov authored
USB debug port only supports 8 byte rx/tx packets. Although spec implies that "if a packet larger than eight bytes is received from the remote computer, the device must break the larger packet into eight-byte packets before sending the data to the Debug Port", the real PLX NET20DC device does not handle it right - data is corrupted on debug port end if serial interface sends >8 byte urbs. Patch below fixes the issue by limiting tx urb to 8 byte. Signed off by: Aleks Gorelov <dared1st@yahoo.com> Signed-off-by: -
Oliver Neukum authored
cdc-acm must give up secondary interfaces if the primary is disconnected and vice versa. This wasn't done correctly. Signed-off-by:
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Oliver Neukum authored
usb serial decrements the pm counter even if an interface has been disconnected. If it was a logical disconnect the interface may belong already to another driver. This patch introduces a check for disconnected interfaces. Signed-off-by:
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Oliver Neukum authored
this patch implements - suspend/resume - aggressive autosuspend for the cdc-wdm driver - pre/post_reset Signed-off-by:
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Oliver Neukum authored
this patch saves power for cdc-acm devices that support remote wakeup while the device is connected. - request needs_remote_wakeup when needed - delayed write while a device is autoresumed - the device is marked busy when appropriate Signed-off-by:
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Ben Collins authored
The 28xb, as documented in comments, has the same ID's as the 28x. Remove the duplicated ID's from the device tables, and expand the comment to document this. Signed-off-by:
Ben Collins <ben.collins@canonical.com> Signed-off-by:
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Benny Halevy authored
This fixes the compiler warning. Signed-off-by: -
Yoshihiro Shimoda authored
fix interrupt transfer interval for Full/Low speed device. Signed-off-by:
Yoshihiro Shimoda <shimoda.yoshihiro@renesas.com> Signed-off-by:
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