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libata: cleanup device sleep capability detection

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Move the code to retrieve the device sleep capability and timings out of
ata_dev_configure() into the helper function ata_dev_config_devslp().
While at it, mark the device as supporting the device sleep capability
only if the sata settings page was retrieved successfully to ensure that
the timing information is correctly initialized.

Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Link: https://lore.kernel.org/r/20210816014456.2191776-5-damien.lemoal@wdc.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Damien Le Moal 2021-08-16 10:44:49 +09:00 committed by Jens Axboe
parent 56b4f06c55
commit d8d8778c24
1 changed files with 32 additions and 23 deletions
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55
drivers/ata/libata-core.c
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@ -2363,6 +2363,37 @@ static void ata_dev_config_trusted(struct ata_device *dev)
dev->flags |= ATA_DFLAG_TRUSTED;
}
static void ata_dev_config_devslp(struct ata_device *dev)
{
u8 *sata_setting = dev->link->ap->sector_buf;
unsigned int err_mask;
int i, j;
/*
* Check device sleep capability. Get DevSlp timing variables
* from SATA Settings page of Identify Device Data Log.
*/
if (!ata_id_has_devslp(dev->id))
return;
err_mask = ata_read_log_page(dev,
ATA_LOG_IDENTIFY_DEVICE,
ATA_LOG_SATA_SETTINGS,
sata_setting, 1);
if (err_mask) {
ata_dev_dbg(dev,
"failed to get SATA Settings Log, Emask 0x%x\n",
err_mask);
return;
}
dev->flags |= ATA_DFLAG_DEVSLP;
for (i = 0; i < ATA_LOG_DEVSLP_SIZE; i++) {
j = ATA_LOG_DEVSLP_OFFSET + i;
dev->devslp_timing[i] = sata_setting[j];
}
}
/**
* ata_dev_configure - Configure the specified ATA/ATAPI device
* @dev: Target device to configure
@ -2565,29 +2596,7 @@ int ata_dev_configure(struct ata_device *dev)
}
}
/* Check and mark DevSlp capability. Get DevSlp timing variables
* from SATA Settings page of Identify Device Data Log.
*/
if (ata_id_has_devslp(dev->id)) {
u8 *sata_setting = ap->sector_buf;
int i, j;
dev->flags |= ATA_DFLAG_DEVSLP;
err_mask = ata_read_log_page(dev,
ATA_LOG_IDENTIFY_DEVICE,
ATA_LOG_SATA_SETTINGS,
sata_setting,
1);
if (err_mask)
ata_dev_dbg(dev,
"failed to get Identify Device Data, Emask 0x%x\n",
err_mask);
else
for (i = 0; i < ATA_LOG_DEVSLP_SIZE; i++) {
j = ATA_LOG_DEVSLP_OFFSET + i;
dev->devslp_timing[i] = sata_setting[j];
}
}
ata_dev_config_devslp(dev);
ata_dev_config_sense_reporting(dev);
ata_dev_config_zac(dev);
ata_dev_config_trusted(dev);