From c75da205e02dda3b79ca057e558f97f3d61c855d Mon Sep 17 00:00:00 2001 From: Aaron Lu Date: Fri, 14 Mar 2014 13:46:09 +0800 Subject: [PATCH] libata: acpi: avoid passing NULL to ACPI evaluation method If ACPI handle for an ATA device is NULL, we shouldn't call ata_dev_get_GTF as that function will use handle to do some ACPI evaluation. Signed-off-by: Aaron Lu Signed-off-by: Tejun Heo --- drivers/ata/libata-acpi.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/ata/libata-acpi.c b/drivers/ata/libata-acpi.c index 9e69a5308693..b4f7cc2522d9 100644 --- a/drivers/ata/libata-acpi.c +++ b/drivers/ata/libata-acpi.c @@ -835,6 +835,7 @@ void ata_acpi_on_resume(struct ata_port *ap) ata_for_each_dev(dev, &ap->link, ALL) { ata_acpi_clear_gtf(dev); if (ata_dev_enabled(dev) && + ata_dev_acpi_handle(dev) && ata_dev_get_GTF(dev, NULL) >= 0) dev->flags |= ATA_DFLAG_ACPI_PENDING; } -- 2.20.1