ata_std_prereset() always returns 0, hence the check in ata_sff_prereset()
is pointless and thus it also can return only 0 (however, we cannot change
the prototypes of ata_{sff|std}_prereset() as they implement the driver's
prereset() method).
Found by Linux Verification Center (linuxtesting.org) with the SVACE static
analysis tool.
Signed-off-by: Sergey Shtylyov <s.shtylyov@omp.ru>
Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
* Kernel thread context (may sleep)
*
* RETURNS:
- * 0 on success, -errno otherwise.
+ * Always 0.
*/
int ata_std_prereset(struct ata_link *link, unsigned long deadline)
{
* Kernel thread context (may sleep)
*
* RETURNS:
- * 0 on success, -errno otherwise.
+ * Always 0.
*/
int ata_sff_prereset(struct ata_link *link, unsigned long deadline)
{
struct ata_eh_context *ehc = &link->eh_context;
int rc;
- rc = ata_std_prereset(link, deadline);
- if (rc)
- return rc;
+ /* The standard prereset is best-effort and always returns 0 */
+ ata_std_prereset(link, deadline);
/* if we're about to do hardreset, nothing more to do */
if (ehc->i.action & ATA_EH_HARDRESET)