From 8a66fdae771487762519db0546e9ccb648a2f911 Mon Sep 17 00:00:00 2001 From: Axel Lin Date: Thu, 11 Dec 2014 11:10:44 +0800 Subject: [PATCH] mmc: toshsd: Fix unbalanced locking Fix returning IRQ_HANDLED with spin_lock held. Signed-off-by: Axel Lin Signed-off-by: Ulf Hansson --- drivers/mmc/host/toshsd.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/mmc/host/toshsd.c b/drivers/mmc/host/toshsd.c index e5d8dec65f44..e2cdd5fb1423 100644 --- a/drivers/mmc/host/toshsd.c +++ b/drivers/mmc/host/toshsd.c @@ -176,7 +176,8 @@ static irqreturn_t toshsd_thread_irq(int irq, void *dev_id) spin_lock_irqsave(&host->lock, flags); if (!sg_miter_next(sg_miter)) - return IRQ_HANDLED; + goto done; + buf = sg_miter->addr; /* Ensure we dont read more than one block. The chip will interrupt us @@ -198,6 +199,7 @@ static irqreturn_t toshsd_thread_irq(int irq, void *dev_id) sg_miter->consumed = count; sg_miter_stop(sg_miter); +done: spin_unlock_irqrestore(&host->lock, flags); return IRQ_HANDLED;