moonjuice/kernel_arpi
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

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

Browse Source 
[ Upstream commit cde600af7b413c9fe03e85c58c4279df90e91d13 ]

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().

Fixes: d96be879ff ("mmc: Add a MX2/MX3 specific SDHC driver")
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Link: https://lore.kernel.org/r/20221101063023.1664968-4-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 14:30:17 +08:00
committed by Greg Kroah-Hartman
parent f0502fe86a
commit 2d496050de
1 changed files with 3 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
drivers/mmc/host/mxcmmc.c
View File

@@ -1143,7 +1143,9 @@ static int mxcmci_probe(struct platform_device *pdev)
timer_setup(&host->watchdog, mxcmci_watchdog, 0); timer_setup(&host->watchdog, mxcmci_watchdog, 0);
mmc_add_host(mmc); ret = mmc_add_host(mmc);
if (ret)
goto out_free_dma;
return 0; return 0;