diff options
Diffstat (limited to 'drivers/mmc/mmc_block.c')
| -rw-r--r-- | drivers/mmc/mmc_block.c | 15 |
1 files changed, 13 insertions, 2 deletions
diff --git a/drivers/mmc/mmc_block.c b/drivers/mmc/mmc_block.c index d4eee99c2bf6..9b629856c735 100644 --- a/drivers/mmc/mmc_block.c +++ b/drivers/mmc/mmc_block.c @@ -85,6 +85,12 @@ static void mmc_blk_put(struct mmc_blk_data *md) up(&open_lock); } +static inline int mmc_blk_readonly(struct mmc_card *card) +{ + return mmc_card_readonly(card) || + !(card->csd.cmdclass & CCC_BLOCK_WRITE); +} + static int mmc_blk_open(struct inode *inode, struct file *filp) { struct mmc_blk_data *md; @@ -95,6 +101,10 @@ 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_blk_readonly(md->queue.card)) + ret = -EROFS; } return ret; @@ -403,9 +413,10 @@ 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_blk_readonly(card)?"(ro)":""); mmc_set_drvdata(card, md); add_disk(md->disk); |