From: Diana Craciun diana.craciun@oss.nxp.com
[ Upstream commit 5026cf605143e764e1785bbf9158559d17f8d260 ]
Before destroying the mc_io, check first that it was allocated.
Reviewed-by: Laurentiu Tudor laurentiu.tudor@nxp.com Acked-by: Laurentiu Tudor laurentiu.tudor@nxp.com Signed-off-by: Diana Craciun diana.craciun@oss.nxp.com Link: https://lore.kernel.org/r/20200929085441.17448-11-diana.craciun@oss.nxp.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/bus/fsl-mc/mc-io.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/drivers/bus/fsl-mc/mc-io.c b/drivers/bus/fsl-mc/mc-io.c index 7226cfc49b6fd..3f806599748a4 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);