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

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[ Upstream commit 5026cf605143e764e1785bbf9158559d17f8d260 ]

Before destroying the mc_io, check first that it was
allocated.

Reviewed-by: Laurentiu Tudor <[email protected]>
Acked-by: Laurentiu Tudor <[email protected]>
Signed-off-by: Diana Craciun <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Greg Kroah-Hartman <[email protected]>
Signed-off-by: Sasha Levin <[email protected]>
This commit is contained in:
Diana Craciun 2020-09-29 11:54:38 +03:00 • committed by Greg Kroah-Hartman
commit 37464a8a7f
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);