• Michał Mirosław's avatar
    NFC: pn533: use constant off-stack buffer for sending acks · 8b55d758
    Michał Mirosław authored
    fix for WARN:
    
    usb 3-2.4.1: NFC: Exchanging data failed (error 0x13)
    llcp: nfc_llcp_recv: err -5
    llcp: nfc_llcp_symm_timer: SYMM timeout
    ------------[ cut here ]------------
    WARNING: CPU: 1 PID: 26397 at .../drivers/usb/core/hcd.c:1584 usb_hcd_map_urb_for_dma+0x370/0x550
    transfer buffer not dma capable
    [...]
    Workqueue: events nfc_llcp_timeout_work [nfc]
    Call Trace:
     ? dump_stack+0x46/0x5a
     ? __warn+0xb9/0xe0
     ? warn_slowpath_fmt+0x5a/0x80
     ? usb_hcd_map_urb_for_dma+0x370/0x550
     ? usb_hcd_submit_urb+0x2fb/0xa60
     ? dequeue_entity+0x3f2/0xc30
     ? pn533_usb_send_ack+0x5d/0x80 [pn533_usb]
     ? pn533_usb_abort_cmd+0x13/0x20 [pn533_usb]
     ? pn533_dep_link_down+0x32/0x70 [pn533]
     ? nfc_dep_link_down+0x87/0xd0 [nfc]
    [...]
    usb 3-2.4.1: NFC: Exchanging data failed (error 0x13)
    llcp: nfc_llcp_recv: err -5
    llcp: nfc_llcp_symm_timer: SYMM timeout
    Signed-off-by: default avatarMichał Mirosław <mirq-linux@rere.qmqm.pl>
    Signed-off-by: default avatarSamuel Ortiz <sameo@linux.intel.com>
    8b55d758
usb.c 14.3 KB