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ata: libata: add missing ata_identify_page_supported() calls

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ata_dev_config_ncq_prio() and ata_dev_config_devslp() both access pages
of the IDENTIFY DEVICE data log. Before calling ata_read_log_page(),
make sure to check for the existence of the IDENTIFY DEVICE data log and
of the log page accessed using ata_identify_page_supported(). This
avoids useless error messages from ata_read_log_page() and failures with
some LLDD scsi drivers using libsas.

Reported-by: Nikolay <[email protected]>
Cc: [email protected] # 5.15
Signed-off-by: Damien Le Moal <[email protected]>
Tested-by: Matthew Perkowski <[email protected]>
This commit is contained in:
Damien Le Moal committed 2021-11-18 14:34:19 +09:00
1 parent 23ef63d5e1
commit 06f6c4c6c3
1 file changed
+5 -1
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drivers/ata/libata-core.c
+5 -1
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@@ -2178,6 +2178,9 @@ static void ata_dev_config_ncq_prio(struct ata_device *dev)
struct ata_port *ap = dev->link->ap;
unsigned int err_mask;
if (!ata_identify_page_supported(dev, ATA_LOG_SATA_SETTINGS))
return;
err_mask = ata_read_log_page(dev,
ATA_LOG_IDENTIFY_DEVICE,
ATA_LOG_SATA_SETTINGS,
@@ -2454,7 +2457,8 @@ static void ata_dev_config_devslp(struct ata_device *dev)
* Check device sleep capability. Get DevSlp timing variables
* from SATA Settings page of Identify Device Data Log.
*/
if (!ata_id_has_devslp(dev->id))
if (!ata_id_has_devslp(dev->id) ||
!ata_identify_page_supported(dev, ATA_LOG_SATA_SETTINGS))
return;
err_mask = ata_read_log_page(dev,