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author | Thomas Gleixner <tglx@linutronix.de> | 2012-11-23 10:08:44 +0100 |
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committer | Ben Hutchings <ben@decadent.org.uk> | 2013-03-06 03:22:34 +0000 |
commit | 9771304decd27e25593b1c3f6cd80a91c1c8f219 (patch) | |
tree | 83f8a6c3d43f1b3f6d8c181bbec054d70d9f73f6 /drivers/s390 | |
parent | 3208ee7f73115f8a92912ad05a15b97da41fae58 (diff) | |
download | kernel_samsung_smdk4412-9771304decd27e25593b1c3f6cd80a91c1c8f219.zip kernel_samsung_smdk4412-9771304decd27e25593b1c3f6cd80a91c1c8f219.tar.gz kernel_samsung_smdk4412-9771304decd27e25593b1c3f6cd80a91c1c8f219.tar.bz2 |
genirq: Avoid deadlock in spurious handling
commit e716efde75267eab919cdb2bef5b2cb77f305326 upstream.
commit 52553ddf(genirq: fix regression in irqfixup, irqpoll)
introduced a potential deadlock by calling the action handler with the
irq descriptor lock held.
Remove the call and let the handling code run even for an interrupt
where only a single action is registered. That matches the goal of
the above commit and avoids the deadlock.
Document the confusing action = desc->action reload in the handling
loop while at it.
Reported-and-tested-by: "Wang, Warner" <warner.wang@hp.com>
Tested-by: Edward Donovan <edward.donovan@numble.net>
Cc: "Wang, Song-Bo (Stoney)" <song-bo.wang@hp.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Diffstat (limited to 'drivers/s390')
0 files changed, 0 insertions, 0 deletions