diff options
| author | Subhash Jadavani <subhashj@codeaurora.org> | 2012-04-12 18:06:07 +0400 |
|---|---|---|
| committer | Chris Ball <cjb@laptop.org> | 2012-05-09 18:07:12 +0400 |
| commit | 3d93576e3442a2becb91290d62f1c105fec1150c (patch) | |
| tree | 9806da64e145f74749d2e639cd00878a1289ca96 /drivers | |
| parent | 10942aa40a595d7ff8b4e90f8a762e816367cac3 (diff) | |
| download | linux-3d93576e3442a2becb91290d62f1c105fec1150c.tar.xz | |
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 <subhashj@codeaurora.org>
Reviewed-by: Namjae Jeon <linkinjeon@gmail.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/mmc/core/mmc.c | 18 |
1 files changed, 7 insertions, 11 deletions
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, |