diff options
author | André Fabian Silva Delgado <emulatorman@parabola.nu> | 2016-03-25 03:53:42 -0300 |
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committer | André Fabian Silva Delgado <emulatorman@parabola.nu> | 2016-03-25 03:53:42 -0300 |
commit | 03dd4cb26d967f9588437b0fc9cc0e8353322bb7 (patch) | |
tree | fa581f6dc1c0596391690d1f67eceef3af8246dc /drivers/mmc/core/sd.c | |
parent | d4e493caf788ef44982e131ff9c786546904d934 (diff) |
Linux-libre 4.5-gnu
Diffstat (limited to 'drivers/mmc/core/sd.c')
-rw-r--r-- | drivers/mmc/core/sd.c | 37 |
1 files changed, 19 insertions, 18 deletions
diff --git a/drivers/mmc/core/sd.c b/drivers/mmc/core/sd.c index 967535d76..bb39a29b2 100644 --- a/drivers/mmc/core/sd.c +++ b/drivers/mmc/core/sd.c @@ -329,6 +329,7 @@ static int mmc_read_switch(struct mmc_card *card) card->sw_caps.sd3_bus_mode = status[13]; /* Driver Strengths supported by the card */ card->sw_caps.sd3_drv_type = status[9]; + card->sw_caps.sd3_curr_limit = status[7] | status[6] << 8; } out: @@ -545,14 +546,25 @@ static int sd_set_current_limit(struct mmc_card *card, u8 *status) * when we set current limit to 200ma, the card will draw 200ma, and * when we set current limit to 400/600/800ma, the card will draw its * maximum 300ma from the host. + * + * The above is incorrect: if we try to set a current limit that is + * not supported by the card, the card can rightfully error out the + * attempt, and remain at the default current limit. This results + * in a 300mA card being limited to 200mA even though the host + * supports 800mA. Failures seen with SanDisk 8GB UHS cards with + * an iMX6 host. --rmk */ - if (max_current >= 800) + if (max_current >= 800 && + card->sw_caps.sd3_curr_limit & SD_MAX_CURRENT_800) current_limit = SD_SET_CURRENT_LIMIT_800; - else if (max_current >= 600) + else if (max_current >= 600 && + card->sw_caps.sd3_curr_limit & SD_MAX_CURRENT_600) current_limit = SD_SET_CURRENT_LIMIT_600; - else if (max_current >= 400) + else if (max_current >= 400 && + card->sw_caps.sd3_curr_limit & SD_MAX_CURRENT_400) current_limit = SD_SET_CURRENT_LIMIT_400; - else if (max_current >= 200) + else if (max_current >= 200 && + card->sw_caps.sd3_curr_limit & SD_MAX_CURRENT_200) current_limit = SD_SET_CURRENT_LIMIT_200; if (current_limit != SD_SET_CURRENT_NO_CHANGE) { @@ -1128,16 +1140,8 @@ out: */ static int mmc_sd_resume(struct mmc_host *host) { - int err = 0; - - if (!(host->caps & MMC_CAP_RUNTIME_RESUME)) { - err = _mmc_sd_resume(host); - pm_runtime_set_active(&host->card->dev); - pm_runtime_mark_last_busy(&host->card->dev); - } pm_runtime_enable(&host->card->dev); - - return err; + return 0; } /* @@ -1165,12 +1169,9 @@ static int mmc_sd_runtime_resume(struct mmc_host *host) { int err; - if (!(host->caps & (MMC_CAP_AGGRESSIVE_PM | MMC_CAP_RUNTIME_RESUME))) - return 0; - err = _mmc_sd_resume(host); - if (err) - pr_err("%s: error %d doing aggressive resume\n", + if (err && err != -ENOMEDIUM) + pr_err("%s: error %d doing runtime resume\n", mmc_hostname(host), err); return 0; |