diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/mmc/mmc.c | 39 | ||||
| -rw-r--r-- | drivers/mmc/mmc_block.c | 9 |
2 files changed, 30 insertions, 18 deletions
diff --git a/drivers/mmc/mmc.c b/drivers/mmc/mmc.c index 294961a102c..725c6ad3eb6 100644 --- a/drivers/mmc/mmc.c +++ b/drivers/mmc/mmc.c @@ -413,8 +413,7 @@ static void mmc_decode_cid(struct mmc_card *card) card->cid.month = UNSTUFF_BITS(resp, 8, 4); card->cid.year += 2000; /* SD cards year offset */ - } - else { + } else { /* * The selection of the format here is based upon published * specs from sandisk and from what people have reported. @@ -494,8 +493,7 @@ static void mmc_decode_csd(struct mmc_card *card) csd->capacity = (1 + m) << (e + 2); csd->read_blkbits = UNSTUFF_BITS(resp, 80, 4); - } - else { + } else { /* * We only understand CSD structure v1.1 and v1.2. * v1.2 has extra information in bits 15, 11 and 10. @@ -738,10 +736,20 @@ static void mmc_discover_cards(struct mmc_host *host) err = mmc_wait_for_cmd(host, &cmd, CMD_RETRIES); if (err != MMC_ERR_NONE) mmc_card_set_dead(card); - else + else { card->rca = cmd.resp[0] >> 16; - } - else { + + if (!host->ops->get_ro) { + printk(KERN_WARNING "%s: host does not " + "support reading read-only " + "switch. assuming write-enable.\n", + mmc_hostname(host)); + } else { + if (host->ops->get_ro(host)) + mmc_card_set_readonly(card); + } + } + } else { cmd.opcode = MMC_SET_RELATIVE_ADDR; cmd.arg = card->rca << 16; cmd.flags = MMC_RSP_R1; @@ -833,24 +841,23 @@ static void mmc_setup(struct mmc_host *host) int err; u32 ocr; - host->mode = MMC_MODE_MMC; + host->mode = MMC_MODE_SD; mmc_power_up(host); mmc_idle_cards(host); - err = mmc_send_op_cond(host, 0, &ocr); + err = mmc_send_app_op_cond(host, 0, &ocr); /* - * If we fail to detect any cards then try - * searching for SD cards. + * If we fail to detect any SD cards then try + * searching for MMC cards. */ - if (err != MMC_ERR_NONE) - { - err = mmc_send_app_op_cond(host, 0, &ocr); + if (err != MMC_ERR_NONE) { + host->mode = MMC_MODE_MMC; + + err = mmc_send_op_cond(host, 0, &ocr); if (err != MMC_ERR_NONE) return; - - host->mode = MMC_MODE_SD; } host->ocr = mmc_select_voltage(host, ocr); diff --git a/drivers/mmc/mmc_block.c b/drivers/mmc/mmc_block.c index d4eee99c2bf..fa83f15fdf1 100644 --- a/drivers/mmc/mmc_block.c +++ b/drivers/mmc/mmc_block.c @@ -95,6 +95,10 @@ static int mmc_blk_open(struct inode *inode, struct file *filp) if (md->usage == 2) check_disk_change(inode->i_bdev); ret = 0; + + if ((filp->f_mode & FMODE_WRITE) && + mmc_card_readonly(md->queue.card)) + ret = -EROFS; } return ret; @@ -403,9 +407,10 @@ static int mmc_blk_probe(struct mmc_card *card) if (err) goto out; - printk(KERN_INFO "%s: %s %s %dKiB\n", + printk(KERN_INFO "%s: %s %s %dKiB %s\n", md->disk->disk_name, mmc_card_id(card), mmc_card_name(card), - (card->csd.capacity << card->csd.read_blkbits) / 1024); + (card->csd.capacity << card->csd.read_blkbits) / 1024, + mmc_card_readonly(card)?"(ro)":""); mmc_set_drvdata(card, md); add_disk(md->disk); |