diff options
| -rw-r--r-- | drivers/mmc/core/block.c | 32 |
1 files changed, 18 insertions, 14 deletions
diff --git a/drivers/mmc/core/block.c b/drivers/mmc/core/block.c index ab9c780df750..f11537a66a60 100644 --- a/drivers/mmc/core/block.c +++ b/drivers/mmc/core/block.c @@ -2277,9 +2277,7 @@ static int mmc_rpmb_chrdev_open(struct inode *inode, struct file *filp) get_device(&rpmb->dev); filp->private_data = rpmb; - mutex_lock(&open_lock); - rpmb->md->usage++; - mutex_unlock(&open_lock); + mmc_blk_get(rpmb->md->disk); return nonseekable_open(inode, filp); } @@ -2290,9 +2288,7 @@ static int mmc_rpmb_chrdev_release(struct inode *inode, struct file *filp) struct mmc_rpmb_data, chrdev); put_device(&rpmb->dev); - mutex_lock(&open_lock); - rpmb->md->usage--; - mutex_unlock(&open_lock); + mmc_blk_put(rpmb->md); return 0; } @@ -2308,6 +2304,13 @@ static const struct file_operations mmc_rpmb_fileops = { #endif }; +static void mmc_blk_rpmb_device_release(struct device *dev) +{ + struct mmc_rpmb_data *rpmb = dev_get_drvdata(dev); + + ida_simple_remove(&mmc_rpmb_ida, rpmb->id); + kfree(rpmb); +} static int mmc_blk_alloc_rpmb_part(struct mmc_card *card, struct mmc_blk_data *md, @@ -2326,8 +2329,10 @@ static int mmc_blk_alloc_rpmb_part(struct mmc_card *card, return devidx; rpmb = kzalloc(sizeof(*rpmb), GFP_KERNEL); - if (!rpmb) + if (!rpmb) { + ida_simple_remove(&mmc_rpmb_ida, devidx); return -ENOMEM; + } snprintf(rpmb_name, sizeof(rpmb_name), "mmcblk%u%s", card->host->index, subname ? subname : ""); @@ -2338,6 +2343,7 @@ static int mmc_blk_alloc_rpmb_part(struct mmc_card *card, rpmb->dev.bus = &mmc_rpmb_bus_type; rpmb->dev.devt = MKDEV(MAJOR(mmc_rpmb_devt), rpmb->id); rpmb->dev.parent = &card->dev; + rpmb->dev.release = mmc_blk_rpmb_device_release; device_initialize(&rpmb->dev); dev_set_drvdata(&rpmb->dev, rpmb); rpmb->md = md; @@ -2347,7 +2353,7 @@ static int mmc_blk_alloc_rpmb_part(struct mmc_card *card, ret = cdev_device_add(&rpmb->chrdev, &rpmb->dev); if (ret) { pr_err("%s: could not add character device\n", rpmb_name); - goto out_remove_ida; + goto out_put_device; } list_add(&rpmb->node, &md->rpmbs); @@ -2362,18 +2368,16 @@ static int mmc_blk_alloc_rpmb_part(struct mmc_card *card, return 0; -out_remove_ida: - ida_simple_remove(&mmc_rpmb_ida, rpmb->id); - kfree(rpmb); +out_put_device: + put_device(&rpmb->dev); return ret; } static void mmc_blk_remove_rpmb_part(struct mmc_rpmb_data *rpmb) + { cdev_device_del(&rpmb->chrdev, &rpmb->dev); - device_del(&rpmb->dev); - ida_simple_remove(&mmc_rpmb_ida, rpmb->id); - kfree(rpmb); + put_device(&rpmb->dev); } /* MMC Physical partitions consist of two boot partitions and |