From 0aab3995485b8a994bf29a995a008c9ea4a28054 Mon Sep 17 00:00:00 2001 From: Stefan Nilsson XK Date: Tue, 1 Mar 2011 14:41:04 +0100 Subject: [PATCH] mmc: sdio: remember new card RCA when redetecting card 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 Reviewed-by: Ulf Hansson Reviewed-by: Pawel Wieczorkiewicz Signed-off-by: Linus Walleij Cc: Signed-off-by: Chris Ball --- drivers/mmc/core/sdio.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/drivers/mmc/core/sdio.c b/drivers/mmc/core/sdio.c index c9fbb77..db0f0b4 100644 --- a/drivers/mmc/core/sdio.c +++ b/drivers/mmc/core/sdio.c @@ -395,6 +395,14 @@ 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); } -- 2.7.4