diff options
| author | Jason Wang <jason77.wang@gmail.com> | 2010-09-03 05:57:19 -0400 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2010-09-27 21:21:51 -0400 |
| commit | 882787ff8fdeb0be790547ee9b22b281095e95da (patch) | |
| tree | 52006253aed2ce45148719cce487a22dce878665 /scripts/unifdef.c | |
| parent | 29d834912bbcf0d095e6cd0e95b0d9790fdf7957 (diff) | |
V4L/DVB: gspca - main: Fix a crash of some webcams on ARM arch
When plugging some webcams on ARM, the system crashes.
This is because we alloc buffer for an urb through usb_buffer_alloc,
the alloced buffer is already in DMA coherent region, so we should
set the flag of this urb to URB_NO_TRANSFER_DMA_MAP, otherwise when
we submit this urb, the hcd core will handle this address as an
non-DMA address and call dma_map_single/sg to map it. On arm
architecture, dma_map_single a DMA coherent address will be catched
by a BUG_ON().
Signed-off-by: Jason Wang <jason77.wang@gmail.com>
Signed-off-by: Jean-François Moine <moinejf@free.fr>
Cc: stable@kernel.org
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'scripts/unifdef.c')
0 files changed, 0 insertions, 0 deletions