diff options
| author | Mauro Carvalho Chehab <mchehab@s-opensource.com> | 2018-02-27 06:08:09 -0500 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@s-opensource.com> | 2018-03-06 04:41:34 -0500 |
| commit | d571b592c6206d33731f41aa710fa0f69ac8611b (patch) | |
| tree | 1f8d58cc2b9ec49cb02639c2b5372dbfe8c33652 /drivers/media/usb/em28xx/em28xx.h | |
| parent | 94448e21cf08b10f7dc7acdaca387594370396b0 (diff) | |
media: em28xx: don't use coherent buffer for DMA transfers
While coherent memory is cheap on x86, it may cause performance
impacts on other archs. As we don't have any good reason to
use it, let's change the logic by allocating memory via kmalloc()
and letting the USB core to do the DMA mapping and memory free
for us.
While here, also fixes an issue that it was not de-allocating
memories if something gets wrong during memory block
allocation.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Diffstat (limited to 'drivers/media/usb/em28xx/em28xx.h')
| -rw-r--r-- | drivers/media/usb/em28xx/em28xx.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/media/usb/em28xx/em28xx.h b/drivers/media/usb/em28xx/em28xx.h index 3dbcc9d05a8a..a52f23efd624 100644 --- a/drivers/media/usb/em28xx/em28xx.h +++ b/drivers/media/usb/em28xx/em28xx.h @@ -242,7 +242,7 @@ struct em28xx_usb_bufs { struct urb **urb; /* transfer buffers for isoc/bulk transfer */ - char **transfer_buffer; + char **buf; }; struct em28xx_usb_ctl { |