diff options
Diffstat (limited to 'drivers/mmc/core/sd.c')
| -rw-r--r-- | drivers/mmc/core/sd.c | 22 |
1 files changed, 17 insertions, 5 deletions
diff --git a/drivers/mmc/core/sd.c b/drivers/mmc/core/sd.c index 00895c99d9bb..0a04a6e86ca1 100644 --- a/drivers/mmc/core/sd.c +++ b/drivers/mmc/core/sd.c @@ -213,10 +213,18 @@ static int mmc_read_switch(struct mmc_card *card) err = mmc_sd_switch(card, 0, 0, 1, status); if (err) { + /* + * We all hosts that cannot perform the command + * to fail more gracefully + */ + if (err != -EINVAL) + goto out; + printk(KERN_WARNING "%s: problem reading switch " "capabilities, performance might suffer.\n", mmc_hostname(card->host)); err = 0; + goto out; } @@ -324,8 +332,10 @@ static int mmc_sd_init_card(struct mmc_host *host, u32 ocr, goto err; if (oldcard) { - if (memcmp(cid, oldcard->raw_cid, sizeof(cid)) != 0) + if (memcmp(cid, oldcard->raw_cid, sizeof(cid)) != 0) { + err = -ENOENT; goto err; + } card = oldcard; } else { @@ -333,8 +343,10 @@ static int mmc_sd_init_card(struct mmc_host *host, u32 ocr, * Allocate card structure. */ card = mmc_alloc_card(host); - if (IS_ERR(card)) + if (IS_ERR(card)) { + err = PTR_ERR(card); goto err; + } card->type = MMC_TYPE_SD; memcpy(card->raw_cid, cid, sizeof(card->raw_cid)); @@ -358,7 +370,7 @@ static int mmc_sd_init_card(struct mmc_host *host, u32 ocr, goto free_card; err = mmc_decode_csd(card); - if (err < 0) + if (err) goto free_card; mmc_decode_cid(card); @@ -449,7 +461,7 @@ free_card: mmc_remove_card(card); err: - return -EIO; + return err; } /* @@ -666,6 +678,6 @@ err: printk(KERN_ERR "%s: error %d whilst initialising SD card\n", mmc_hostname(host), err); - return 0; + return err; } |