This is a note to let you know that I've just added the patch titled
ahci: asm1166: correct count of reported ports
to the 5.15-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
ahci-asm1166-correct-count-of-reported-ports.patch
and it can be found in the queue-5.15 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 40efe31f8bc495590b6e02d8df001388b5c33e87
Author: Conrad Kostecki <conikost@xxxxxxxxxx>
Date: Tue Jan 23 19:30:02 2024 +0100
ahci: asm1166: correct count of reported ports
[ Upstream commit 0077a504e1a4468669fd2e011108db49133db56e ]
The ASM1166 SATA host controller always reports wrongly,
that it has 32 ports. But in reality, it only has six ports.
This seems to be a hardware issue, as all tested ASM1166
SATA host controllers reports such high count of ports.
Example output: ahci 0000:09:00.0: AHCI 0001.0301
32 slots 32 ports 6 Gbps 0xffffff3f impl SATA mode.
By adjusting the port_map, the count is limited to six ports.
New output: ahci 0000:09:00.0: AHCI 0001.0301
32 slots 32 ports 6 Gbps 0x3f impl SATA mode.
Closes: https://bugzilla.kernel.org/show_bug.cgi?id=211873
Closes: https://bugzilla.kernel.org/show_bug.cgi?id=218346
Signed-off-by: Conrad Kostecki <conikost@xxxxxxxxxx>
Reviewed-by: Hans de Goede <hdegoede@xxxxxxxxxx>
Signed-off-by: Niklas Cassel <cassel@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/ata/ahci.c b/drivers/ata/ahci.c
index 3147b2e6cd8c9..56fcb1dec6af8 100644
--- a/drivers/ata/ahci.c
+++ b/drivers/ata/ahci.c
@@ -658,6 +658,11 @@ MODULE_PARM_DESC(mobile_lpm_policy, "Default LPM policy for mobile chipsets");
static void ahci_pci_save_initial_config(struct pci_dev *pdev,
struct ahci_host_priv *hpriv)
{
+ if (pdev->vendor == PCI_VENDOR_ID_ASMEDIA && pdev->device == 0x1166) {
+ dev_info(&pdev->dev, "ASM1166 has only six ports\n");
+ hpriv->saved_port_map = 0x3f;
+ }
+
if (pdev->vendor == PCI_VENDOR_ID_JMICRON && pdev->device == 0x2361) {
dev_info(&pdev->dev, "JMB361 has only one port\n");
hpriv->force_port_map = 1;
