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libata-core: Allow longer timeout for drive spinup from PUIS 

When spinning up a drive from powered on standby mode (PUIS),
SETFEATURES_SPINUP is executed with the default timeout used
for any SETFEATURES subcommand, that is 5+10 seconds. The
total 15s is too short for some drives to complete spinup
(e.g. drives with a large indirection table stored on media),
resulting in ata_dev_read_id to fail twice on the execution
of SETFEATURES_SPINUP. For this feature, allow a larger
default timeout of 30 seconds. However, in the same spirit
as with the timeout of other feature subcommands, do not
ignore ata_probe_timeout if it is set).

Signed-off-by: Damien Le Moal <damien.lemoal@hgst.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
This commit is contained in:
Damien Le Moal 2016-04-04 12:17:09 -04:00 committed by Tejun Heo
parent d991c872ac
commit 974e0a4537
2 changed files with 7 additions and 2 deletions
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6
drivers/ata/libata-core.c
View File

@ -4528,6 +4528,7 @@ unsigned int ata_dev_set_feature(struct ata_device *dev, u8 enable, u8 feature)
{
struct ata_taskfile tf;
unsigned int err_mask;
unsigned long timeout = 0;
/* set up set-features taskfile */
DPRINTK("set features - SATA features\n");
@ -4539,7 +4540,10 @@ unsigned int ata_dev_set_feature(struct ata_device *dev, u8 enable, u8 feature)
tf.protocol = ATA_PROT_NODATA;
tf.nsect = feature;
err_mask = ata_exec_internal(dev, &tf, NULL, DMA_NONE, NULL, 0, 0);
if (enable == SETFEATURES_SPINUP)
timeout = ata_probe_timeout ?
ata_probe_timeout * 1000 : SETFEATURES_SPINUP_TIMEOUT;
err_mask = ata_exec_internal(dev, &tf, NULL, DMA_NONE, NULL, 0, timeout);
DPRINTK("EXIT, err_mask=%x\n", err_mask);
return err_mask;

3
include/linux/ata.h
View File

@ -371,7 +371,8 @@ enum {
SETFEATURES_AAM_ON = 0x42,
SETFEATURES_AAM_OFF = 0xC2,
SETFEATURES_SPINUP = 0x07, /* Spin-up drive */
SETFEATURES_SPINUP = 0x07, /* Spin-up drive */
SETFEATURES_SPINUP_TIMEOUT = 30000, /* 30s timeout for drive spin-up from PUIS */
SETFEATURES_SATA_ENABLE = 0x10, /* Enable use of SATA feature */
SETFEATURES_SATA_DISABLE = 0x90, /* Disable use of SATA feature */