From 3d93576e3442a2becb91290d62f1c105fec1150c Mon Sep 17 00:00:00 2001 From: Subhash Jadavani Date: Thu, 12 Apr 2012 19:36:07 +0530 Subject: mmc: core: skip card initialization if power class selection fails With current implementation of power class selection, mmc_select_powerclass() should never fail. So treat any error returned by this function as serious enough to skip the card initialization. Signed-off-by: Subhash Jadavani Reviewed-by: Namjae Jeon Signed-off-by: Chris Ball --- drivers/mmc/core/mmc.c | 18 +++++++----------- 1 file changed, 7 insertions(+), 11 deletions(-) (limited to 'drivers/mmc/core') diff --git a/drivers/mmc/core/mmc.c b/drivers/mmc/core/mmc.c index 2a9b7b1a4801..163046030773 100644 --- a/drivers/mmc/core/mmc.c +++ b/drivers/mmc/core/mmc.c @@ -719,6 +719,10 @@ static int mmc_select_powerclass(struct mmc_card *card, card->ext_csd.generic_cmd6_time); } + if (err) + pr_err("%s: power class selection for ext_csd_bus_width %d" + " failed\n", mmc_hostname(card->host), bus_width); + return err; } @@ -1102,9 +1106,7 @@ static int mmc_init_card(struct mmc_host *host, u32 ocr, EXT_CSD_BUS_WIDTH_8 : EXT_CSD_BUS_WIDTH_4; err = mmc_select_powerclass(card, ext_csd_bits, ext_csd); if (err) - pr_warning("%s: power class selection to bus width %d" - " failed\n", mmc_hostname(card->host), - 1 << bus_width); + goto err; } /* @@ -1136,10 +1138,7 @@ static int mmc_init_card(struct mmc_host *host, u32 ocr, err = mmc_select_powerclass(card, ext_csd_bits[idx][0], ext_csd); if (err) - pr_warning("%s: power class selection to " - "bus width %d failed\n", - mmc_hostname(card->host), - 1 << bus_width); + goto err; err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_BUS_WIDTH, @@ -1167,10 +1166,7 @@ static int mmc_init_card(struct mmc_host *host, u32 ocr, err = mmc_select_powerclass(card, ext_csd_bits[idx][1], ext_csd); if (err) - pr_warning("%s: power class selection to " - "bus width %d ddr %d failed\n", - mmc_hostname(card->host), - 1 << bus_width, ddr); + goto err; err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_BUS_WIDTH, -- cgit v1.2.3