mmc: vub300: fix return value check of mmc_add_host()

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[ Upstream commit 0613ad2401 ]

mmc_add_host() may return error, if we ignore its return value, the memory
that allocated in mmc_alloc_host() will be leaked and it will lead a kernel
crash because of deleting not added device in the remove path.

So fix this by checking the return value and goto error path which will call
mmc_free_host(), besides, the timer added before mmc_add_host() needs be del.

And this patch fixes another missing call mmc_free_host() if usb_control_msg()
fails.

Fixes: 88095e7b47 ("mmc: Add new VUB300 USB-to-SD/SDIO/MMC driver")
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Link: https://lore.kernel.org/r/20221101063023.1664968-9-yangyingliang@huawei.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

...

This commit is contained in:

Yang Yingliang 2022-11-01 14:30:22 +08:00 • committed by Greg Kroah-Hartman

parent bfd77b194c

commit 2044b2ea77

1 changed files with 8 additions and 3 deletions

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drivers/mmc/host/vub300.c

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