diff options
| author | San Mehat <san@android.com> | 2011-12-13 01:21:54 +0800 |
|---|---|---|
| committer | Andy Green <andy.green@linaro.org> | 2011-12-26 16:42:00 +0800 |
| commit | efbd27177b92d446cff1937217198749043bdaed (patch) | |
| tree | 5d23318a45f3cb2db7bb68d54829d7c9afdc5c8b /drivers | |
| parent | fc64c03c5d4a9e1d19e5cdeb131e87c0932592ed (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')
| -rw-r--r-- | drivers/mmc/core/sd.c | 51 |
1 files changed, 45 insertions, 6 deletions
diff --git a/drivers/mmc/core/sd.c b/drivers/mmc/core/sd.c index 520d7bfd8ba..af741ed019e 100644 --- a/drivers/mmc/core/sd.c +++ b/drivers/mmc/core/sd.c @@ -720,9 +720,6 @@ struct device_type sd_type = { int mmc_sd_get_cid(struct mmc_host *host, u32 ocr, u32 *cid, u32 *rocr) { int err; -#ifdef CONFIG_MMC_PARANOID_SD_INIT - int retries; -#endif /* * Since we're changing the OCR value, we seem to @@ -803,6 +800,9 @@ int mmc_sd_setup_card(struct mmc_host *host, struct mmc_card *card, bool reinit) { int err; +#ifdef CONFIG_MMC_PARANOID_SD_INIT + int retries; +#endif if (!reinit) { /* @@ -1045,18 +1045,36 @@ static void mmc_sd_remove(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); - + mmc_claim_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_send_status(host->card, NULL); - +#endif mmc_release_host(host); if (err) { @@ -1171,6 +1189,9 @@ 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); @@ -1235,9 +1256,27 @@ 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); |