[PATCH 6.6 179/396] ahci: asm1064: correct count of reported ports

Greg Kroah-Hartman
2024-04-01T16:45:00Z

From: Andrey Jr. Melnikov <temnota.am@gmail.com>

[ Upstream commit 9815e39617541ef52d0dfac4be274ad378c6dc09 ]

The ASM1064 SATA host controller always reports wrongly,
that it has 24 ports. But in reality, it only has four ports.

before:
ahci 0000:04:00.0: SSS flag set, parallel bus scan disabled
ahci 0000:04:00.0: AHCI 0001.0301 32 slots 24 ports 6 Gbps 0xffff0f impl SATA mode
ahci 0000:04:00.0: flags: 64bit ncq sntf stag pm led only pio sxs deso sadm sds apst

after:
ahci 0000:04:00.0: ASM1064 has only four ports
ahci 0000:04:00.0: forcing port_map 0xffff0f -> 0xf
ahci 0000:04:00.0: SSS flag set, parallel bus scan disabled
ahci 0000:04:00.0: AHCI 0001.0301 32 slots 24 ports 6 Gbps 0xf impl SATA mode
ahci 0000:04:00.0: flags: 64bit ncq sntf stag pm led only pio sxs deso sadm sds apst

Signed-off-by: "Andrey Jr. Melnikov" <temnota.am@gmail.com>
Signed-off-by: Niklas Cassel <cassel@kernel.org>
Stable-dep-of: 6cd8adc3e189 ("ahci: asm1064: asm1166: don't limit reported ports")
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/ata/ahci.c | 14 +++++++++++---
1 file changed, 11 insertions(+), 3 deletions(-)

diff --git a/drivers/ata/ahci.c b/drivers/ata/ahci.c
index 90d33c519f4c6..9933ad9737bb2 100644
--- a/drivers/ata/ahci.c
+++ b/drivers/ata/ahci.c
@@ -670,9 +670,17 @@ 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_ASMEDIA) {
+ switch (pdev->device) {
+ case 0x1166:
+ dev_info(&pdev->dev, "ASM1166 has only six ports\n");
+ hpriv->saved_port_map = 0x3f;
+ break;
+ case 0x1064:
+ dev_info(&pdev->dev, "ASM1064 has only four ports\n");
+ hpriv->saved_port_map = 0xf;
+ break;
+ }
}

if (pdev->vendor == PCI_VENDOR_ID_JMICRON && pdev->device == 0x2361) {
--
2.43.0