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| author | Yang Yingliang <yangyingliang@huawei.com> | 2022-11-01 09:30:16 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-12-31 15:32:23 +0300 |
| commit | 40aa73c70e8a5706f9cbe01409a5e51cc0f1750e (patch) | |
| tree | e2b99a692f80017358d2658709e318bd97ecb99e /drivers/mmc | |
| parent | 60fafcf2fb7ee9a4125dc9a86eeb9d490acf23e2 (diff) | |
| download | linux-40aa73c70e8a5706f9cbe01409a5e51cc0f1750e.tar.xz | |
mmc: moxart: fix return value check of mmc_add_host()
[ Upstream commit 0ca18d09c744fb030ae9bc5836c3e357e0237dea ]
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: 1b66e94e6b99 ("mmc: moxart: Add MOXA ART SD/MMC driver")
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Link: https://lore.kernel.org/r/20221101063023.1664968-3-yangyingliang@huawei.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers/mmc')
| -rw-r--r-- | drivers/mmc/host/moxart-mmc.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/mmc/host/moxart-mmc.c b/drivers/mmc/host/moxart-mmc.c index dfc3ffd5b1f8..52ed30f2d9f4 100644 --- a/drivers/mmc/host/moxart-mmc.c +++ b/drivers/mmc/host/moxart-mmc.c @@ -665,7 +665,9 @@ static int moxart_probe(struct platform_device *pdev) goto out; dev_set_drvdata(dev, mmc); - mmc_add_host(mmc); + ret = mmc_add_host(mmc); + if (ret) + goto out; dev_dbg(dev, "IRQ=%d, FIFO is %d bytes\n", irq, host->fifo_width); |