From: Mauro Carvalho Chehab Date: Fri, 15 Feb 2013 15:39:31 +0000 (-0200) Subject: Revert "[media] dvb_frontend: return -ENOTTY for unimplement IOCTL" X-Git-Tag: v3.8~4 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=ac89758697195a8155f3861a34f0b41c6e562fcb;p=pandora-kernel.git 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 Signed-off-by: Mauro Carvalho Chehab Signed-off-by: Linus Torvalds --- Reading git-diff-tree failed