From: Ulf Hansson Date: Thu, 30 Apr 2020 09:16:37 +0000 (+0200) Subject: mmc: sdio: Fix potential NULL pointer error in mmc_sdio_init_card() X-Git-Tag: v5.6.19~8 X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=e0f61e3ab2d8d99f92dac85615b0e962121d6d24;p=thirdparty%2Fkernel%2Fstable.git 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: Signed-off-by: Ulf Hansson Link: https://lore.kernel.org/r/20200430091640.455-2-ulf.hansson@linaro.org Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/mmc/core/sdio.c b/drivers/mmc/core/sdio.c index ebb387aa51584..d35679e6e6aa1 100644 --- a/drivers/mmc/core/sdio.c +++ b/drivers/mmc/core/sdio.c @@ -718,9 +718,8 @@ try_again: /* Retry init sequence, but without R4_18V_PRESENT. */ retries = 0; goto try_again; - } else { - goto remove; } + return err; } /*