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| author | Mauro Carvalho Chehab <mchehab@redhat.com> | 2013-02-15 19:39:31 +0400 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2013-02-16 00:11:23 +0400 |
| commit | ac89758697195a8155f3861a34f0b41c6e562fcb (patch) | |
| tree | 67a97370b01558c8b691c6bc37192c133bde8cae /arch/mips/mti-sead3 | |
| parent | 11e7651432405eeee833fe9d1307488df7a81cd3 (diff) | |
| download | linux-ac89758697195a8155f3861a34f0b41c6e562fcb.tar.xz | |
Revert "[media] dvb_frontend: return -ENOTTY for unimplement IOCTL"
As reported by Klaus Schmidinger:
"In VDR I use an ioctl() call with FE_READ_UNCORRECTED_BLOCKS on a
device (using stb0899). After this call I check 'errno' for
EOPNOTSUPP to determine whether this device supports this call. This
used to work just fine, until a few months ago I noticed that my
devices using stb0899 didn't display their signal quality in VDR's OSD
any more. After further investigation I found that
ioctl(FE_READ_UNCORRECTED_BLOCKS) no longer returns EOPNOTSUPP, but
rather ENOTTY. And since I stop getting the signal quality in case
any unknown errno value appears, this broke my signal quality query
function."
While the changes reflect what is there at:
http://comments.gmane.org/gmane.linux.kernel/1235728
it does cause regression on userspace. So, revert it to stop the
damage.
This reverts commit 177ffe506cf8 ("[media] dvb_frontend: return -ENOTTY
for unimplement IOCTL").
Reported-by: Klaus Schmidinger <Klaus.Schmidinger@tvdr.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/mips/mti-sead3')
0 files changed, 0 insertions, 0 deletions