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| author | Stefan Brüns <stefan.bruens@rwth-aachen.de> | 2017-02-05 12:57:59 -0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-04-21 09:32:42 +0200 |
| commit | e0116f4d9a9ad5112d315b236c7b3d7036d404d7 (patch) | |
| tree | a9c9bc754f9d4f14e61b81f86f77d3674a3cf5e4 /drivers/fpga/fpga-mgr.c | |
| parent | b1bfb5083bfa79d1400009ac6265bfb5f2c09ec9 (diff) | |
| download | linux-stable-e0116f4d9a9ad5112d315b236c7b3d7036d404d7.tar.gz linux-stable-e0116f4d9a9ad5112d315b236c7b3d7036d404d7.tar.bz2 linux-stable-e0116f4d9a9ad5112d315b236c7b3d7036d404d7.zip | |
cxusb: Use a dma capable buffer also for reading
commit 3f190e3aec212fc8c61e202c51400afa7384d4bc upstream.
Commit 17ce039b4e54 ("[media] cxusb: don't do DMA on stack")
added a kmalloc'ed bounce buffer for writes, but missed to do the same
for reads. As the read only happens after the write is finished, we can
reuse the same buffer.
As dvb_usb_generic_rw handles a read length of 0 by itself, avoid calling
it using the dvb_usb_generic_read wrapper function.
Signed-off-by: Stefan Brüns <stefan.bruens@rwth-aachen.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Cc: Ben Hutchings <ben@decadent.org.uk>
Cc: Brad Spengler <spender@grsecurity.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/fpga/fpga-mgr.c')
0 files changed, 0 insertions, 0 deletions