From 7d5e0e59542ac452585e3a33abcad6e26b4dec4a Mon Sep 17 00:00:00 2001 From: Tomas Winkler Date: Tue, 19 Jun 2012 09:13:36 +0300 Subject: [PATCH] mei: mei_irq_thread_write_handler check for overflow check for overflow when retrieving empty write slots Signed-off-by: Tomas Winkler Signed-off-by: Greg Kroah-Hartman --- drivers/misc/mei/interrupt.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/misc/mei/interrupt.c b/drivers/misc/mei/interrupt.c index 83e80bc08d77..8e4dd74b96e5 100644 --- a/drivers/misc/mei/interrupt.c +++ b/drivers/misc/mei/interrupt.c @@ -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");