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staging: mt7621-mmc: Fix memory leek in case of error in probe

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If the base address is not successfully obtained in the probe
function, then the mmc_host struct is not freed. Adding an exit for
that case fixes the bug.

Signed-off-by: Christian Lütke-Stetzkamp <christian@lkamp.de>
Reviewed-by: NeilBrown <neil@brown.name>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Christian Lütke-Stetzkamp 2018-04-04 22:15:33 +02:00 • committed by Greg Kroah-Hartman
commit 5ac36d9c96
1 changed files with 5 additions and 2 deletions
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7
drivers/staging/mt7621-mmc/sd.c
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@ -2719,8 +2719,10 @@ static int msdc_drv_probe(struct platform_device *pdev)
//BUG_ON((!hw) || (!mem) || (irq < 0)); /* --- by chhung */
base = devm_ioremap_resource(&pdev->dev, res);
if (IS_ERR(base))
return PTR_ERR(base);
if (IS_ERR(base)) {
ret = PTR_ERR(base);
goto host_free;
}
/* Set host parameters to mmc */
mmc->ops = &mt_msdc_ops;
@ -2861,6 +2863,7 @@ release:
if (mem)
release_mem_region(mem->start, mem->end - mem->start + 1);
host_free:
mmc_free_host(mmc);
return ret;