diff mbox series

[v4,10/13] bus/fsl_mc: Do not rely on caller to provide non NULL mc_io

Message ID 20200826092527.4992-11-diana.craciun@oss.nxp.com (mailing list archive)
State New, archived
Headers show
Series bus/fsl-mc: Extend mc-bus driver functionalities in preparation for mc-bus VFIO support | expand

Commit Message

Diana Madalina Craciun Aug. 26, 2020, 9:25 a.m. UTC 
Before destroying the mc_io, check first that it was
allocated.

Signed-off-by: Diana Craciun <diana.craciun@oss.nxp.com>
---
 drivers/bus/fsl-mc/mc-io.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/drivers/bus/fsl-mc/mc-io.c b/drivers/bus/fsl-mc/mc-io.c
index a30b53f1d87d..305015486b91 100644
--- a/drivers/bus/fsl-mc/mc-io.c
+++ b/drivers/bus/fsl-mc/mc-io.c
@@ -129,7 +129,12 @@  int __must_check fsl_create_mc_io(struct device *dev,
  */
 void fsl_destroy_mc_io(struct fsl_mc_io *mc_io)
 {
-	struct fsl_mc_device *dpmcp_dev = mc_io->dpmcp_dev;
+	struct fsl_mc_device *dpmcp_dev;
+
+	if (!mc_io)
+		return;
+
+	dpmcp_dev = mc_io->dpmcp_dev;
 
 	if (dpmcp_dev)
 		fsl_mc_io_unset_dpmcp(mc_io);