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printk: fix failure to return error in devkmsg_poll()

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Error value got overwritten instantly.

Signed-off-by: Nicolas Kaiser <nikai@nikai.net>
Cc: Kay Sievers <kay.sievers@vrfy.org>
Cc: Greg KH <greg@kroah.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Nicolas Kaiser 2013-04-29 16:17:20 -07:00 • committed by Linus Torvalds
parent 1b2c289b4f
commit 0a285317da
1 changed files with 2 additions and 1 deletions
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1
kernel/printk.c
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@ -601,6 +601,7 @@ static unsigned int devkmsg_poll(struct file *file, poll_table *wait)
/* return error when data has vanished underneath us */ /* return error when data has vanished underneath us */
if (user->seq < log_first_seq) if (user->seq < log_first_seq)
ret = POLLIN|POLLRDNORM|POLLERR|POLLPRI; ret = POLLIN|POLLRDNORM|POLLERR|POLLPRI;
else
ret = POLLIN|POLLRDNORM; ret = POLLIN|POLLRDNORM;
} }
raw_spin_unlock_irq(&logbuf_lock); raw_spin_unlock_irq(&logbuf_lock);