| commit | c389d27b5e643d745f55ffb939b1426060ba63d4 | |
| author | Borislav Petkov <petkovbb@googlemail.com> | |
| Wed, 30 Jul 2008 05:33:32 +0000 (29 22:33 -0700) | ||
| committer | Linus Torvalds <torvalds@linux-foundation.org> | |
| Wed, 30 Jul 2008 16:41:45 +0000 (30 09:41 -0700) | ||
| tree | aa7a4903fe58542a716a78e37d518d71727f9475 | treesnapshot (tar.gz zip) |
| parent | 5def9a3a22e09c99717f41ab7f07ec9e1a1f3ec8 | commitdiff |
8250.c: port.lock is irq-safe
serial8250_startup() doesn't disable interrupts while taking the &up->port.lock
which might race against the interrupt handler serial8250_interrupt(), which
when entered, will deadlock waiting for the lock to be released.
Signed-off-by: Borislav Petkov <petkovbb@gmail.com>
Tested-by: Ingo Molnar <mingo@elte.hu>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
serial8250_startup() doesn't disable interrupts while taking the &up->port.lock
which might race against the interrupt handler serial8250_interrupt(), which
when entered, will deadlock waiting for the lock to be released.
Signed-off-by: Borislav Petkov <petkovbb@gmail.com>
Tested-by: Ingo Molnar <mingo@elte.hu>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| drivers/serial/8250.c | diffblobblamehistory |