4.19-stable review patch. If anyone has any objections, please let me know.
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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 abdfd440987b4..6b1562fed85ed 100644 --- a/drivers/ata/ahci.c +++ b/drivers/ata/ahci.c @@ -634,9 +634,17 @@ 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) {