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scsi: lpfc: Fix some error codes in debugfs 

If copy_from_user() or kstrtoull() fail then the correct behavior is to
return a negative error code.

Link: https://lore.kernel.org/r/YEsbU/UxYypVrC7/@mwanda
Fixes: f9bb2da11d ("[SCSI] lpfc 8.3.27: T10 additions for SLI4")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Dan Carpenter 2021-03-12 10:42:11 +03:00 committed by Martin K. Petersen
parent 5999b9e5b1
commit 19f1bc7edf
1 changed files with 2 additions and 2 deletions
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4
drivers/scsi/lpfc/lpfc_debugfs.c
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@ -2421,7 +2421,7 @@ lpfc_debugfs_dif_err_write(struct file *file, const char __user *buf,
memset(dstbuf, 0, 33);
size = (nbytes < 32) ? nbytes : 32;
if (copy_from_user(dstbuf, buf, size))
return 0;
return -EFAULT;
if (dent == phba->debug_InjErrLBA) {
if ((dstbuf[0] == 'o') && (dstbuf[1] == 'f') &&
@ -2430,7 +2430,7 @@ lpfc_debugfs_dif_err_write(struct file *file, const char __user *buf,
}
if ((tmp == 0) && (kstrtoull(dstbuf, 0, &tmp)))
return 0;
return -EINVAL;
if (dent == phba->debug_writeGuard)
phba->lpfc_injerr_wgrd_cnt = (uint32_t)tmp;