https://github.com/torvalds/linux
Revision 587f0d5d6d44e3529028bf197d424f866fb2411d authored by Mauro Carvalho Chehab on 15 December 2010, 21:45:42 UTC, committed by Mauro Carvalho Chehab on 17 December 2010, 20:39:43 UTC
Fix a regression where bttv driver causes oopses when loading, since it were using some non-initialized mutexes. While it would be possible to fix the issue, there are some other lock troubles, like to the presence of lock code at free_btres_lock(). It is possible to fix, but the better is to just use the core-assisted locking schema. This way, V4L2 core will serialize access to all ioctl's/open/close/mmap/read/poll operations, avoiding to have two processes accessing the hardware at the same time. Also, as there's just one lock, instead of 3, there's no risk of dead locks. The net result is a cleaner code, with just one lock. Reported-by: Dan Carpenter <error27@gmail.com> Reported-by: Brandon Philips<brandon@ifup.org> Reported-by: Chris Clayton <chris2553@googlemail.com> Reported-by: Torsten Kaiser <just.for.lkml@googlemail.com> Tested-by: Chris Clayton <chris2553@googlemail.com> Tested-by: Torsten Kaiser <just.for.lkml@googlemail.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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Tip revision: 587f0d5d6d44e3529028bf197d424f866fb2411d authored by Mauro Carvalho Chehab on 15 December 2010, 21:45:42 UTC
[media] bttv: fix mutex use before init (BZ#24602)
[media] bttv: fix mutex use before init (BZ#24602)
Tip revision: 587f0d5
| File | Mode | Size |
|---|---|---|
| Documentation | ||
| arch | ||
| block | ||
| crypto | ||
| drivers | ||
| firmware | ||
| fs | ||
| include | ||
| init | ||
| ipc | ||
| kernel | ||
| lib | ||
| mm | ||
| net | ||
| samples | ||
| scripts | ||
| security | ||
| sound | ||
| tools | ||
| usr | ||
| virt | ||
| .gitignore | -rw-r--r-- | 936 bytes |
| .mailmap | -rw-r--r-- | 3.9 KB |
| COPYING | -rw-r--r-- | 18.3 KB |
| CREDITS | -rw-r--r-- | 91.8 KB |
| Kbuild | -rw-r--r-- | 2.4 KB |
| Kconfig | -rw-r--r-- | 252 bytes |
| MAINTAINERS | -rw-r--r-- | 177.8 KB |
| Makefile | -rw-r--r-- | 50.9 KB |
| README | -rw-r--r-- | 17.1 KB |
| REPORTING-BUGS | -rw-r--r-- | 3.3 KB |
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