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bus/fsl_mc: Do not rely on caller to provide non NULL mc_io

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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>
This commit is contained in:
Diana Craciun 2020-09-29 11:54:38 +03:00 committed by Greg Kroah-Hartman
parent 17eaf21320
commit 5026cf6051
1 changed files with 6 additions and 1 deletions
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7
drivers/bus/fsl-mc/mc-io.c
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@ -129,7 +129,12 @@ 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);