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| author | Thomas Gleixner <tglx@linutronix.de> | 2012-11-23 10:08:44 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-02-28 06:32:23 -0800 |
| commit | 890914e9fc7b9c12714a58f1e1318f3de500f241 (patch) | |
| tree | 8a703b84d29d76ff2a96007753d34a45388ae49e /kernel/irq/manage.c | |
| parent | d8c3d7e8f9e47cc1a828ca7433376c60c4b9af23 (diff) | |
| download | kernel_samsung_aries-890914e9fc7b9c12714a58f1e1318f3de500f241.zip kernel_samsung_aries-890914e9fc7b9c12714a58f1e1318f3de500f241.tar.gz kernel_samsung_aries-890914e9fc7b9c12714a58f1e1318f3de500f241.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: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'kernel/irq/manage.c')
0 files changed, 0 insertions, 0 deletions