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1e4597e8f0
Spotted and tested by Thomas Sattler <tsattler@gmx.de>. cinergyT2.c does cancel_delayed_work() + flush_scheduled_work() while holding cinergyt2->sem. This leads to deadlock because work->func() needs the same mutex to complete. Another bug is that this code in fact can't reliably stop the re-arming delayed_work. Convert this code to use cancel_rearming_delayed_work() and move it out of ->sem. Another mutex, ->wq_sem, was added to protect against the concurrent open/resume. This patch is a horrible hack to fix the lockup which happens in practice. As Dmitry Torokhov pointed out this driver has other problems and needs further changes. Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org> |
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| .. | ||
| b2c2 | ||
| bt8xx | ||
| cinergyT2 | ||
| dvb-core | ||
| dvb-usb | ||
| frontends | ||
| pluto2 | ||
| ttpci | ||
| ttusb-budget | ||
| ttusb-dec | ||
| Kconfig | ||
| Makefile | ||