From: Diana Craciun <diana.craciun@xxxxxxxxxxx> [ Upstream commit 5026cf605143e764e1785bbf9158559d17f8d260 ] Before destroying the mc_io, check first that it was allocated. Reviewed-by: Laurentiu Tudor <laurentiu.tudor@xxxxxxx> Acked-by: Laurentiu Tudor <laurentiu.tudor@xxxxxxx> Signed-off-by: Diana Craciun <diana.craciun@xxxxxxxxxxx> Link: https://lore.kernel.org/r/20200929085441.17448-11-diana.craciun@xxxxxxxxxxx Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> --- drivers/staging/fsl-mc/bus/mc-io.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/drivers/staging/fsl-mc/bus/mc-io.c b/drivers/staging/fsl-mc/bus/mc-io.c index 798c965fe2033..3fa6774946fae 100644 --- a/drivers/staging/fsl-mc/bus/mc-io.c +++ b/drivers/staging/fsl-mc/bus/mc-io.c @@ -167,7 +167,12 @@ error_destroy_mc_io: */ 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); -- 2.27.0
