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authorJason A. Donenfeld <Jason@zx2c4.com>2022-06-24 03:14:49 +0200
committerJason A. Donenfeld <Jason@zx2c4.com>2022-06-27 14:06:49 +0200
commitccbbf9a5d9569e889769d9fdeb3dc44a5b72024e (patch)
treede07d42aaa572ce7cd407ebd0e96efcfcc999a91 /kernel/trace
parentsignal: break out of wait loops on kthread_stop() (diff)
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ath9k: sleep for less time when unregistering hwrng
Even though hwrng provides a `wait` parameter, it doesn't work very well when waiting for a long time. There are numerous deadlocks that emerge related to shutdown. Work around this API limitation by waiting for a shorter amount of time and erroring more frequently. This commit also prevents hwrng from splatting messages to dmesg when there's a timeout and switches to using schedule_timeout_interruptible(), so that the kthread can be stopped. Reported-by: Gregory Erwin <gregerwin256@gmail.com> Tested-by: Gregory Erwin <gregerwin256@gmail.com> Cc: Toke Høiland-Jørgensen <toke@redhat.com> Cc: Kalle Valo <kvalo@kernel.org> Cc: Rui Salvaterra <rsalvaterra@gmail.com> Cc: Herbert Xu <herbert@gondor.apana.org.au> Cc: stable@vger.kernel.org Fixes: fcd09c90c3c5 ("ath9k: use hw_random API instead of directly dumping into random.c") Link: https://lore.kernel.org/all/CAO+Okf6ZJC5-nTE_EJUGQtd8JiCkiEHytGgDsFGTEjs0c00giw@mail.gmail.com/ Link: https://lore.kernel.org/lkml/CAO+Okf5k+C+SE6pMVfPf-d8MfVPVq4PO7EY8Hys_DVXtent3HA@mail.gmail.com/ Link: https://bugs.archlinux.org/task/75138 Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
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