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From: Alex Deucher <alexdeucher@gmail.com>
To: amd-gfx@lists.freedesktop.org, alsa-devel@alsa-project.org,
	tiwai@suse.de
Cc: Alex Deucher <alexander.deucher@amd.com>
Subject: [alsa-devel] [PATCH] ALSA: hda/hdmi - fix atpx_present when CLASS is not VGA
Date: Fri, 20 Dec 2019 19:17:02 -0500	[thread overview]
Message-ID: <20191221001702.1338587-1-alexander.deucher@amd.com> (raw)

You can't use PCI_BASE_CLASS with pci_get_class().  This
happens to work by luck on devices with PCI_CLASS_DISPLAY_VGA, but
misses PCI_CLASS_DISPLAY_OTHER.  Add a check for those as well.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
---
 sound/pci/hda/hda_intel.c | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/sound/pci/hda/hda_intel.c b/sound/pci/hda/hda_intel.c
index b856b89378ac..f69c8de64bd6 100644
--- a/sound/pci/hda/hda_intel.c
+++ b/sound/pci/hda/hda_intel.c
@@ -1410,7 +1410,17 @@ static bool atpx_present(void)
 	acpi_handle dhandle, atpx_handle;
 	acpi_status status;
 
-	while ((pdev = pci_get_class(PCI_BASE_CLASS_DISPLAY << 16, pdev)) != NULL) {
+	while ((pdev = pci_get_class(PCI_CLASS_DISPLAY_VGA << 8, pdev)) != NULL) {
+		dhandle = ACPI_HANDLE(&pdev->dev);
+		if (dhandle) {
+			status = acpi_get_handle(dhandle, "ATPX", &atpx_handle);
+			if (!ACPI_FAILURE(status)) {
+				pci_dev_put(pdev);
+				return true;
+			}
+		}
+	}
+	while ((pdev = pci_get_class(PCI_CLASS_DISPLAY_OTHER << 8, pdev)) != NULL) {
 		dhandle = ACPI_HANDLE(&pdev->dev);
 		if (dhandle) {
 			status = acpi_get_handle(dhandle, "ATPX", &atpx_handle);
-- 
2.24.1

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             reply	other threads:[~2019-12-21  0:18 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-12-21  0:17 Alex Deucher [this message]
2019-12-21  8:29 ` [alsa-devel] [PATCH] ALSA: hda/hdmi - fix atpx_present when CLASS is not VGA Takashi Iwai

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