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mei: mei_irq_thread_write_handler check for overflow

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check for overflow when retrieving empty write slots

Signed-off-by: Tomas Winkler <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
This commit is contained in:
Tomas Winkler 2012-06-19 09:13:36 +03:00 • committed by Greg Kroah-Hartman
commit 7d5e0e5954
1 changed files with 3 additions and 0 deletions
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3
drivers/misc/mei/interrupt.c
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@ -1204,6 +1204,9 @@ static int mei_irq_thread_write_handler(struct mei_io_list *cmpl_list,
return 0;
}
*slots = mei_count_empty_write_slots(dev);
if (*slots <= 0)
return -EMSGSIZE;
/* complete all waiting for write CB */
dev_dbg(&dev->pdev->dev, "complete all waiting for write cb.\n");