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media: dvb_frontend: better document the -EPERM condition
authorMauro Carvalho Chehab <mchehab@s-opensource.com>
Mon, 18 Sep 2017 12:05:42 +0000 (08:05 -0400)
committerMauro Carvalho Chehab <mchehab@s-opensource.com>
Wed, 11 Oct 2017 16:57:47 +0000 (12:57 -0400)
commitda5516b5e81d45a96291823620f6c820178dc055
tree44972ef069f759be8580d9aac09184da60e4c55e
parentceb22c8eeecaf51f88a49202d00ea599b9e15477
media: dvb_frontend: better document the -EPERM condition

Two readonly ioctls can't be allowed if the frontend device
is opened in read only mode. Explain why.

Reviewed by: Shuah Khan <shuahkh@osg.samsung.com>

Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
drivers/media/dvb-core/dvb_frontend.c