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author | Linus Walleij <linus.walleij@linaro.org> | 2017-08-20 23:39:11 +0200 |
---|---|---|
committer | Ulf Hansson <ulf.hansson@linaro.org> | 2017-08-30 15:03:40 +0200 |
commit | 2fe20baec46caeaf1076a7f3d7cfd3e75c40205c (patch) | |
tree | 83fa7aa38c5e9efb283f1025decc7fac38cddf02 /drivers/mmc | |
parent | 1f797edc62da59ad9b319a6b3f7c73a58047c896 (diff) | |
download | linux-stable-2fe20baec46caeaf1076a7f3d7cfd3e75c40205c.tar.gz linux-stable-2fe20baec46caeaf1076a7f3d7cfd3e75c40205c.tar.bz2 linux-stable-2fe20baec46caeaf1076a7f3d7cfd3e75c40205c.zip |
mmc: block: Reparametrize mmc_blk_ioctl_[multi]_cmd()
Instead of passing a block device to
mmc_blk_ioctl[_multi]_cmd(), let's pass struct mmc_blk_data()
so we operate ioctl()s on the MMC block device representation
rather than the vanilla block device.
This saves a little duplicated code and makes it possible to
issue ioctl()s not targeted for a specific block device but
rather for a specific partition/area.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Diffstat (limited to 'drivers/mmc')
-rw-r--r-- | drivers/mmc/core/block.c | 43 |
1 files changed, 18 insertions, 25 deletions
diff --git a/drivers/mmc/core/block.c b/drivers/mmc/core/block.c index e3c3641e881a..0eebc2f726c3 100644 --- a/drivers/mmc/core/block.c +++ b/drivers/mmc/core/block.c @@ -553,12 +553,11 @@ static int __mmc_blk_ioctl_cmd(struct mmc_card *card, struct mmc_blk_data *md, return err; } -static int mmc_blk_ioctl_cmd(struct block_device *bdev, +static int mmc_blk_ioctl_cmd(struct mmc_blk_data *md, struct mmc_ioc_cmd __user *ic_ptr) { struct mmc_blk_ioc_data *idata; struct mmc_blk_ioc_data *idatas[1]; - struct mmc_blk_data *md; struct mmc_queue *mq; struct mmc_card *card; int err = 0, ioc_err = 0; @@ -568,12 +567,6 @@ static int mmc_blk_ioctl_cmd(struct block_device *bdev, if (IS_ERR(idata)) return PTR_ERR(idata); - md = mmc_blk_get(bdev->bd_disk); - if (!md) { - err = -EINVAL; - goto cmd_err; - } - card = md->queue.card; if (IS_ERR(card)) { err = PTR_ERR(card); @@ -597,20 +590,17 @@ static int mmc_blk_ioctl_cmd(struct block_device *bdev, blk_put_request(req); cmd_done: - mmc_blk_put(md); -cmd_err: kfree(idata->buf); kfree(idata); return ioc_err ? ioc_err : err; } -static int mmc_blk_ioctl_multi_cmd(struct block_device *bdev, +static int mmc_blk_ioctl_multi_cmd(struct mmc_blk_data *md, struct mmc_ioc_multi_cmd __user *user) { struct mmc_blk_ioc_data **idata = NULL; struct mmc_ioc_cmd __user *cmds = user->cmds; struct mmc_card *card; - struct mmc_blk_data *md; struct mmc_queue *mq; int i, err = 0, ioc_err = 0; __u64 num_of_cmds; @@ -639,16 +629,10 @@ static int mmc_blk_ioctl_multi_cmd(struct block_device *bdev, } } - md = mmc_blk_get(bdev->bd_disk); - if (!md) { - err = -EINVAL; - goto cmd_err; - } - card = md->queue.card; if (IS_ERR(card)) { err = PTR_ERR(card); - goto cmd_done; + goto cmd_err; } @@ -671,8 +655,6 @@ static int mmc_blk_ioctl_multi_cmd(struct block_device *bdev, blk_put_request(req); -cmd_done: - mmc_blk_put(md); cmd_err: for (i = 0; i < num_of_cmds; i++) { kfree(idata[i]->buf); @@ -697,6 +679,7 @@ static int mmc_blk_check_blkdev(struct block_device *bdev) static int mmc_blk_ioctl(struct block_device *bdev, fmode_t mode, unsigned int cmd, unsigned long arg) { + struct mmc_blk_data *md; int ret; switch (cmd) { @@ -704,14 +687,24 @@ static int mmc_blk_ioctl(struct block_device *bdev, fmode_t mode, ret = mmc_blk_check_blkdev(bdev); if (ret) return ret; - return mmc_blk_ioctl_cmd(bdev, - (struct mmc_ioc_cmd __user *)arg); + md = mmc_blk_get(bdev->bd_disk); + if (!md) + return -EINVAL; + ret = mmc_blk_ioctl_cmd(md, + (struct mmc_ioc_cmd __user *)arg); + mmc_blk_put(md); + return ret; case MMC_IOC_MULTI_CMD: ret = mmc_blk_check_blkdev(bdev); if (ret) return ret; - return mmc_blk_ioctl_multi_cmd(bdev, - (struct mmc_ioc_multi_cmd __user *)arg); + md = mmc_blk_get(bdev->bd_disk); + if (!md) + return -EINVAL; + ret = mmc_blk_ioctl_multi_cmd(md, + (struct mmc_ioc_multi_cmd __user *)arg); + mmc_blk_put(md); + return ret; default: return -EINVAL; } |