diff options
| author | Christophe JAILLET <christophe.jaillet@wanadoo.fr> | 2019-06-16 10:02:20 +0300 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2019-06-20 22:37:02 +0300 |
| commit | 22c2f35f49d474fa093b227253941980886d7b1b (patch) | |
| tree | f15827c05ade32e5674a1f7edf135fad7c223454 | |
| parent | adfbd028e155fca3bbe33d458f2f27cb657e5792 (diff) | |
| download | linux-22c2f35f49d474fa093b227253941980886d7b1b.tar.xz | |
scsi: tcmu: Simplify tcmu_update_uio_info()
Use 'kasprintf()' instead of:
- snprintf(NULL, 0...
- kmalloc(...
- snprintf(...
This is less verbose and saves 7 bytes (i.e. the space for '/(null)') if
'udev->dev_config' is NULL.
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Acked-by: Mike Christie <mchristi@redhat.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
| -rw-r--r-- | drivers/target/target_core_user.c | 16 |
1 files changed, 7 insertions, 9 deletions
diff --git a/drivers/target/target_core_user.c b/drivers/target/target_core_user.c index 40b29ca5a98d..9dbd0db64328 100644 --- a/drivers/target/target_core_user.c +++ b/drivers/target/target_core_user.c @@ -1836,20 +1836,18 @@ static int tcmu_update_uio_info(struct tcmu_dev *udev) { struct tcmu_hba *hba = udev->hba->hba_ptr; struct uio_info *info; - size_t size, used; char *str; info = &udev->uio_info; - size = snprintf(NULL, 0, "tcm-user/%u/%s/%s", hba->host_id, udev->name, - udev->dev_config); - size += 1; /* for \0 */ - str = kmalloc(size, GFP_KERNEL); - if (!str) - return -ENOMEM; - used = snprintf(str, size, "tcm-user/%u/%s", hba->host_id, udev->name); if (udev->dev_config[0]) - snprintf(str + used, size - used, "/%s", udev->dev_config); + str = kasprintf(GFP_KERNEL, "tcm-user/%u/%s/%s", hba->host_id, + udev->name, udev->dev_config); + else + str = kasprintf(GFP_KERNEL, "tcm-user/%u/%s", hba->host_id, + udev->name); + if (!str) + return -ENOMEM; /* If the old string exists, free it */ kfree(info->name); |