diff options
| author | Christof Schmitt <christof.schmitt@de.ibm.com> | 2010-07-16 15:37:34 +0200 |
|---|---|---|
| committer | James Bottomley <James.Bottomley@suse.de> | 2010-07-28 16:48:45 +0200 |
| commit | 674c3a993c278b7469e1cf12bfc13e6838dfd877 (patch) | |
| tree | 4b52c44b3f9f9dc8f3a0456cf5a391564196dd5d /drivers/s390/scsi/zfcp_cfdc.c | |
| parent | [SCSI] zfcp: Fix retry after failed "open port" erp action (diff) | |
| download | linux-674c3a993c278b7469e1cf12bfc13e6838dfd877.tar.xz linux-674c3a993c278b7469e1cf12bfc13e6838dfd877.zip | |
[SCSI] zfcp: Use memdup_user and kstrdup
Use the functions memdup_user and kstrdup to allocate memory and copy
the data in one step, saving some lines of code.
Reviewed-by: Swen Schillig <swen@vnet.ibm.com>
Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
Diffstat (limited to 'drivers/s390/scsi/zfcp_cfdc.c')
| -rw-r--r-- | drivers/s390/scsi/zfcp_cfdc.c | 12 |
1 files changed, 3 insertions, 9 deletions
diff --git a/drivers/s390/scsi/zfcp_cfdc.c b/drivers/s390/scsi/zfcp_cfdc.c index 1a2db0a35737..fcbd2b756da4 100644 --- a/drivers/s390/scsi/zfcp_cfdc.c +++ b/drivers/s390/scsi/zfcp_cfdc.c @@ -189,18 +189,12 @@ static long zfcp_cfdc_dev_ioctl(struct file *file, unsigned int command, if (!fsf_cfdc) return -ENOMEM; - data = kmalloc(sizeof(struct zfcp_cfdc_data), GFP_KERNEL); - if (!data) { - retval = -ENOMEM; + data = memdup_user(data_user, sizeof(*data_user)); + if (IS_ERR(data)) { + retval = PTR_ERR(data); goto no_mem_sense; } - retval = copy_from_user(data, data_user, sizeof(*data)); - if (retval) { - retval = -EFAULT; - goto free_buffer; - } - if (data->signature != 0xCFDCACDF) { retval = -EINVAL; goto free_buffer; |