Merge pull request #264 from leoliu-oc/linux-6.6.y-30-sata-lpm

[linux-6.6.y] ata: libata: disabling PhyRdy Change Interrupt based on actual LPM capability
deepin-community · Jun 25, 2024 · a8ede05 · a8ede05
2 parents 546d0d9 + 9202555
commit a8ede05
Showing 1 changed file with 7 additions and 0 deletions.
diff --git a/drivers/ata/libata-eh.c b/drivers/ata/libata-eh.c
@@ -3374,6 +3374,8 @@ static int ata_eh_set_lpm(struct ata_link *link, enum ata_lpm_policy policy,
 			  struct ata_device **r_failed_dev)
 {
 	struct ata_port *ap = ata_is_host_link(link) ? link->ap : NULL;
+	struct device *device = ap ? ap->host->dev : NULL;
+	struct pci_dev *pdev = (!device || !dev_is_pci(device)) ? NULL : to_pci_dev(device);
 	struct ata_eh_context *ehc = &link->eh_context;
 	struct ata_device *dev, *link_dev = NULL, *lpm_dev = NULL;
 	enum ata_lpm_policy old_policy = link->lpm_policy;
@@ -3382,6 +3384,11 @@ static int ata_eh_set_lpm(struct ata_link *link, enum ata_lpm_policy policy,
 	unsigned int err_mask;
 	int rc;
 
+	/* if controller does not support lpm, then sets no LPM flags*/
+	if ((pdev && pdev->vendor == PCI_VENDOR_ID_ZHAOXIN) &&
+	    !(~ap->host->flags & (ATA_HOST_NO_PART | ATA_HOST_NO_SSC | ATA_HOST_NO_DEVSLP)))
+		link->flags |= ATA_LFLAG_NO_LPM;
+
 	/* if the link or host doesn't do LPM, noop */
 	if (!IS_ENABLED(CONFIG_SATA_HOST) ||
 	    (link->flags & ATA_LFLAG_NO_LPM) || (ap && !ap->ops->set_lpm))