diff options
Diffstat (limited to 'drivers/mmc/core/block.c')
| -rw-r--r-- | drivers/mmc/core/block.c | 15 |
1 files changed, 4 insertions, 11 deletions
diff --git a/drivers/mmc/core/block.c b/drivers/mmc/core/block.c index 20135a5de748..4b09c7380e70 100644 --- a/drivers/mmc/core/block.c +++ b/drivers/mmc/core/block.c @@ -375,22 +375,15 @@ static struct mmc_blk_ioc_data *mmc_blk_ioctl_copy_from_user( return idata; } - idata->buf = kmalloc(idata->buf_bytes, GFP_KERNEL); - if (!idata->buf) { - err = -ENOMEM; + idata->buf = memdup_user((void __user *)(unsigned long) + idata->ic.data_ptr, idata->buf_bytes); + if (IS_ERR(idata->buf)) { + err = PTR_ERR(idata->buf); goto idata_err; } - if (copy_from_user(idata->buf, (void __user *)(unsigned long) - idata->ic.data_ptr, idata->buf_bytes)) { - err = -EFAULT; - goto copy_err; - } - return idata; -copy_err: - kfree(idata->buf); idata_err: kfree(idata); out: |