diff options
| author | San Mehat <san@android.com> | 2008-12-04 11:18:00 -0800 |
|---|---|---|
| committer | Dan Willemsen <dwillemsen@nvidia.com> | 2011-11-30 21:37:58 -0800 |
| commit | 9128baaf7c9cd638a5f9e7a906f608c9e1174b58 (patch) | |
| tree | 635a951f699b5f79e4db3e174abcb335f35a2694 /drivers/mmc/core | |
| parent | 147dd834f18d6dea82f044ce5cd252696531ba96 (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')
| -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 3c0e8ead4c7e..6c709f29c9d0 100644 --- a/drivers/mmc/core/sd.c +++ b/drivers/mmc/core/sd.c @@ -719,9 +719,6 @@ 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 @@ -802,6 +799,9 @@ 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) { /* @@ -1046,18 +1046,36 @@ 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) { @@ -1172,6 +1190,9 @@ 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); @@ -1236,9 +1257,27 @@ 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); |