[PATCH v1] ata: libata-eh: Add timeout table entry for STANDBY IMMEDIATE

[Xingui Yang]

ATA_CMD_STANDBYNOW1 is not in the ata_eh_cmd_timeout_table and falls
back to the 5s default (ATA_EH_CMD_DFL_TIMEOUT), which is too short
for some drives to complete a STANDBY IMMEDIATE command issued from
ata_dev_power_set_standby() via ata_exec_internal():

  ata1.00: qc timeout after 5000 msecs (cmd 0xe0)
  ata1.00: STANDBY IMMEDIATE failed (err_mask=0x4)

Reuse the existing ata_eh_flush_timeouts for this command, as a drive
entering standby may need to flush its internal cache, making the flush
timeout a natural fit.

Signed-off-by: Xingui Yang <yangxingui@xxxxxxxxxx>
---
 drivers/ata/libata-eh.c | 2 ++
 include/linux/libata.h  | 2 +-
 2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/ata/libata-eh.c b/drivers/ata/libata-eh.c
index 05df7ea6954a..8f9e12f460c3 100644
--- a/drivers/ata/libata-eh.c
+++ b/drivers/ata/libata-eh.c
@@ -149,6 +149,8 @@ ata_eh_cmd_timeout_table[ATA_EH_CMD_TIMEOUT_TABLE_SIZE] = {
 	  .timeouts = ata_eh_flush_timeouts },
 	{ .commands = CMDS(ATA_CMD_VERIFY),
 	  .timeouts = ata_eh_reset_timeouts },
+	{ .commands = CMDS(ATA_CMD_STANDBYNOW1),
+	  .timeouts = ata_eh_flush_timeouts },
 };
 #undef CMDS
 
diff --git a/include/linux/libata.h b/include/linux/libata.h
index 96e626d6a7ca..6c0d385b2cde 100644
--- a/include/linux/libata.h
+++ b/include/linux/libata.h
@@ -425,7 +425,7 @@ enum {
 	/* This should match the actual table size of
 	 * ata_eh_cmd_timeout_table in libata-eh.c.
 	 */
-	ATA_EH_CMD_TIMEOUT_TABLE_SIZE = 8,
+	ATA_EH_CMD_TIMEOUT_TABLE_SIZE = 9,
 
 	/* User visible DMA mask for DMA control. DO NOT renumber. */
 	ATA_DMA_MASK_ATA	= (1 << 0),	/* DMA on ATA Disk */
-- 
2.43.0