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| author | Ulf Hansson <ulf.hansson@linaro.org> | 2020-04-30 11:16:37 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-06-22 09:05:09 +0200 |
| commit | 5fff08f45970e1f78472b27080e77695289a75e3 (patch) | |
| tree | 4f25b18bcfeba1eab4951e7c78ede4ca3ea078fe /drivers/mmc | |
| parent | fe06085e4e68ec177a8f475a149194602cb5a672 (diff) | |
| download | linux-stable-5fff08f45970e1f78472b27080e77695289a75e3.tar.gz linux-stable-5fff08f45970e1f78472b27080e77695289a75e3.tar.bz2 linux-stable-5fff08f45970e1f78472b27080e77695289a75e3.zip | |
mmc: sdio: Fix potential NULL pointer error in mmc_sdio_init_card()
commit f04086c225da11ad16d7f9a2fbca6483ab16dded upstream.
During some scenarios mmc_sdio_init_card() runs a retry path for the UHS-I
specific initialization, which leads to removal of the previously allocated
card. A new card is then re-allocated while retrying.
However, in one of the corresponding error paths we may end up to remove an
already removed card, which likely leads to a NULL pointer exception. So,
let's fix this.
Fixes: 5fc3d80ef496 ("mmc: sdio: don't use rocr to check if the card could support UHS mode")
Cc: <stable@vger.kernel.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Link: https://lore.kernel.org/r/20200430091640.455-2-ulf.hansson@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/mmc')
| -rw-r--r-- | drivers/mmc/core/sdio.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/drivers/mmc/core/sdio.c b/drivers/mmc/core/sdio.c index 0aa99694b937..4e72ad24322f 100644 --- a/drivers/mmc/core/sdio.c +++ b/drivers/mmc/core/sdio.c @@ -720,9 +720,8 @@ try_again: /* Retry init sequence, but without R4_18V_PRESENT. */ retries = 0; goto try_again; - } else { - goto remove; } + return err; } /* |