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scsi: lpfc: Fix some error codes in debugfs

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commit 19f1bc7edf upstream.

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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Dan Carpenter
2021-03-12 10:42:11 +03:00
committed by Greg Kroah-Hartman
parent 18905249c2
commit debd66577f
1 changed files with 2 additions and 2 deletions
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4
drivers/scsi/lpfc/lpfc_debugfs.c
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@@ -1061,7 +1061,7 @@ 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 ((buf[0] == 'o') && (buf[1] == 'f') && (buf[2] == 'f'))
@@ -1069,7 +1069,7 @@ 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;