From: Stefan Nilsson XK <[email protected]> ------------------- This is a commit scheduled for the next v2.6.34 longterm release. If you see a problem with using this for longterm, please comment. -------------------
commit 0aab3995485b8a994bf29a995a008c9ea4a28054 upstream. During redetection of a SDIO card, a request for a new card RCA was submitted to the card, but was then overwritten by the old RCA. This caused the card to be deselected instead of selected when using the incorrect RCA. This bug's been present since the "oldcard" handling was introduced in 2.6.32. Signed-off-by: Stefan Nilsson XK <[email protected]> Reviewed-by: Ulf Hansson <[email protected]> Reviewed-by: Pawel Wieczorkiewicz <[email protected]> Signed-off-by: Linus Walleij <[email protected]> Signed-off-by: Chris Ball <[email protected]> Signed-off-by: Paul Gortmaker <[email protected]> --- drivers/mmc/core/sdio.c | 8 ++++++++ 1 files changed, 8 insertions(+), 0 deletions(-) diff --git a/drivers/mmc/core/sdio.c b/drivers/mmc/core/sdio.c index 2dd4cfe..ed7620b 100644 --- a/drivers/mmc/core/sdio.c +++ b/drivers/mmc/core/sdio.c @@ -303,6 +303,14 @@ static int mmc_sdio_init_card(struct mmc_host *host, u32 ocr, if (err) goto remove; + /* + * Update oldcard with the new RCA received from the SDIO + * device -- we're doing this so that it's updated in the + * "card" struct when oldcard overwrites that later. + */ + if (oldcard) + oldcard->rca = card->rca; + mmc_set_bus_mode(host, MMC_BUSMODE_PUSHPULL); } -- 1.7.4.4 _______________________________________________ stable mailing list [email protected] http://linux.kernel.org/mailman/listinfo/stable
