From: Mark Brown <broonie@kernel.org>
Date: Tue, 9 Aug 2016 16:45:33 +0000 (+0100)
Subject: spi: Drop io_mutex in error paths
X-Git-Tag: v4.14-rc1~2534^2^2
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=764f21665a12e99f03124b4c8de722cdbff92213;p=platform%2Fkernel%2Flinux-rpi.git

spi: Drop io_mutex in error paths

A couple of error paths were missing drops of io_mutex.

Reported-by: Julia Lawall <julia.lawall@lip6.fr>
Signed-off-by: Mark Brown <broonie@kernel.org>
---

diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c
index 51ad42f..57179d5 100644
--- a/drivers/spi/spi.c
+++ b/drivers/spi/spi.c
@@ -1159,6 +1159,7 @@ static void __spi_pump_messages(struct spi_master *master, bool in_kthread)
 		if (ret < 0) {
 			dev_err(&master->dev, "Failed to power device: %d\n",
 				ret);
+			mutex_unlock(&master->io_mutex);
 			return;
 		}
 	}
@@ -1174,6 +1175,7 @@ static void __spi_pump_messages(struct spi_master *master, bool in_kthread)
 
 			if (master->auto_runtime_pm)
 				pm_runtime_put(master->dev.parent);
+			mutex_unlock(&master->io_mutex);
 			return;
 		}
 	}