diff options
| author | San Mehat <san@android.com> | 2008-12-04 11:18:00 -0800 |
|---|---|---|
| committer | Arve Hjønnevåg <arve@android.com> | 2013-07-01 13:40:23 -0700 |
| commit | 9abeb46f016b75e0c821dd45a89feb4947fb083a (patch) | |
| tree | 9ff9d6e15af536b5830280470c9864e5604dbad6 /drivers/mmc/core/sd.c | |
| parent | d4322f4552aad52b8ce2c229eb35d391cbe09ef0 (diff) | |
mmc: sd: Add retries in re-detection
Signed-off-by: San Mehat <san@android.com>
mmc: sd: Remove debugging printk
Signed-off-by: Dima Zavin <dima@android.com>
Diffstat (limited to 'drivers/mmc/core/sd.c')
| -rw-r--r-- | drivers/mmc/core/sd.c | 42 |
1 files changed, 41 insertions, 1 deletions
diff --git a/drivers/mmc/core/sd.c b/drivers/mmc/core/sd.c index a866485393c6..f008318c5c4d 100644 --- a/drivers/mmc/core/sd.c +++ b/drivers/mmc/core/sd.c @@ -1054,7 +1054,10 @@ static int mmc_sd_alive(struct mmc_host *host) */ static void mmc_sd_detect(struct mmc_host *host) { - int err; + int err = 0; +#ifdef CONFIG_MMC_PARANOID_SD_INIT + int retries = 5; +#endif BUG_ON(!host); BUG_ON(!host->card); @@ -1064,7 +1067,23 @@ static void mmc_sd_detect(struct mmc_host *host) /* * Just check if our card has been removed. */ +#ifdef CONFIG_MMC_PARANOID_SD_INIT + while(retries) { + err = mmc_send_status(host->card, NULL); + if (err) { + retries--; + udelay(5); + continue; + } + break; + } + if (!retries) { + printk(KERN_ERR "%s(%s): Unable to re-detect card (%d)\n", + __func__, mmc_hostname(host), err); + } +#else err = _mmc_detect_card_removed(host); +#endif mmc_release_host(host); @@ -1184,6 +1203,9 @@ int mmc_attach_sd(struct mmc_host *host) { int err; u32 ocr; +#ifdef CONFIG_MMC_PARANOID_SD_INIT + int retries; +#endif BUG_ON(!host); WARN_ON(!host->claimed); @@ -1239,9 +1261,27 @@ int mmc_attach_sd(struct mmc_host *host) /* * Detect and init the card. */ +#ifdef CONFIG_MMC_PARANOID_SD_INIT + retries = 5; + while (retries) { + err = mmc_sd_init_card(host, host->ocr, NULL); + if (err) { + retries--; + continue; + } + break; + } + + if (!retries) { + printk(KERN_ERR "%s: mmc_sd_init_card() failure (err = %d)\n", + mmc_hostname(host), err); + goto err; + } +#else err = mmc_sd_init_card(host, host->ocr, NULL); if (err) goto err; +#endif mmc_release_host(host); err = mmc_add_card(host->card); |