From: Conrad Kostecki conikost@gentoo.org
[ 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@gentoo.org Reviewed-by: Hans de Goede hdegoede@redhat.com Signed-off-by: Niklas Cassel cassel@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/ata/ahci.c | 5 +++++ 1 file changed, 5 insertions(+)
diff --git a/drivers/ata/ahci.c b/drivers/ata/ahci.c index aa35d1941d1f..5db3dc45bdc4 100644 --- a/drivers/ata/ahci.c +++ b/drivers/ata/ahci.c @@ -618,6 +618,11 @@ 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;