[PATCH] ata: libata-sata: fix ata_scsi_lpm_supported() iteration

The inner loop of ata_scsi_lpm_supported() user the wrong variable when
iterating.

It should obviously use the link that we are currently iterating over,
rather than always using the host link.

ata_scsi_lpm_supported() is used to control if a user should be allowed
to change lpm policy (from the default) via sysfs.

Thus, this bug could potentially disallow users to change the LPM policy
for certain SATA devices via sysfs.

Cc: [email protected]
Fixes: 0060beec0bfa ("ata: libata-sata: Add link_power_management_supported sysfs attribute")
Reported-by: Sashiko <[email protected]>
Link: https://lore.kernel.org/linux-ide/[email protected]/
Signed-off-by: Niklas Cassel <[email protected]>
---
 drivers/ata/libata-sata.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/ata/libata-sata.c b/drivers/ata/libata-sata.c
index 2ee54d60ea4b..5138b4e500e5 100644
--- a/drivers/ata/libata-sata.c
+++ b/drivers/ata/libata-sata.c
@@ -913,7 +913,7 @@ static bool ata_scsi_lpm_supported(struct ata_port *ap)
 		return false;
 
 	ata_for_each_link(link, ap, EDGE) {
-		ata_for_each_dev(dev, &ap->link, ENABLED) {
+		ata_for_each_dev(dev, link, ENABLED) {
 			if (dev->quirks & ATA_QUIRK_NOLPM)
 				return false;
 		}
-- 
2.55.0