target/linux/brcm2708/patches-3.10/0050-dwc_otg-Fix-incorrect-URB-allocation-error-handling.patch

   1 From e3e9b6dbd5507ea5e571acae3ef6ed2e2d5dadcf Mon Sep 17 00:00:00 2001
   2 From: P33M <P33M@github.com>
   3 Date: Fri, 15 Feb 2013 22:38:40 +0000
   4 Subject: [PATCH 050/174] dwc_otg: Fix incorrect URB allocation error handling
   5
   6 If the memory allocation for a dwc_otg_urb failed, the kernel would OOPS
   7 because for some reason a member of the *unallocated* struct was set to
   8 zero. Error handling changed to fail correctly.
   9 ---
  10  drivers/usb/host/dwc_otg/dwc_otg_hcd.c | 16 ++++++----------
  11  1 file changed, 6 insertions(+), 10 deletions(-)
  12
  13 --- a/drivers/usb/host/dwc_otg/dwc_otg_hcd.c
  14 +++ b/drivers/usb/host/dwc_otg/dwc_otg_hcd.c
  15 @@ -3136,17 +3136,13 @@ dwc_otg_hcd_urb_t *dwc_otg_hcd_urb_alloc
  16         else
  17                 dwc_otg_urb = DWC_ALLOC(size);
  18
  19 -        if (NULL != dwc_otg_urb)
  20 -                dwc_otg_urb->packet_count = iso_desc_count;
  21 +        if (dwc_otg_urb)
  22 +               dwc_otg_urb->packet_count = iso_desc_count;
  23          else {
  24 -                dwc_otg_urb->packet_count = 0;
  25 -                if (size != 0) {
  26 -                        DWC_ERROR("**** DWC OTG HCD URB alloc - "
  27 -                                  "%salloc of %db failed\n",
  28 -                                  atomic_alloc?"atomic ":"", size);
  29 -                }
  30 -        }
  31 -
  32 +               DWC_ERROR("**** DWC OTG HCD URB alloc - "
  33 +                       "%salloc of %db failed\n",
  34 +                       atomic_alloc?"atomic ":"", size);
  35 +       }
  36         return dwc_otg_urb;
  37  }
  38