5.10-stable review patch. If anyone has any objections, please let me know.
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From: Paul Menzel pmenzel@molgen.mpg.de
[ Upstream commit a17ab7aba5df4135ef77d7f6d7105e1ea414936f ]
Add support for the AMD A85 FCH (Hudson D4) AHCI adapter.
Since this adapter does not require the default 200 ms debounce delay in sata_link_resume(), create a new board board_ahci_no_debounce_delay with the link flag ATA_LFLAG_NO_DEBOUNCE_DELAY, and, for now, configure the AMD A85 FCH (Hudson D4) to use it. On the ASUS F2A85-M PRO it reduces the Linux kernel boot time by the expected 200 ms from 787 ms to 585 ms.
Signed-off-by: Paul Menzel pmenzel@molgen.mpg.de Cc: Tejun Heo tj@kernel.org Signed-off-by: Damien Le Moal damien.lemoal@opensource.wdc.com Stable-dep-of: 2a2df98ec592 ("ata: ahci: Add Elkhart Lake AHCI controller") Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/ata/ahci.c | 9 +++++++++ 1 file changed, 9 insertions(+)
diff --git a/drivers/ata/ahci.c b/drivers/ata/ahci.c index d831a80c25f04..1a3608f4209ec 100644 --- a/drivers/ata/ahci.c +++ b/drivers/ata/ahci.c @@ -51,6 +51,7 @@ enum board_ids { board_ahci, board_ahci_ign_iferr, board_ahci_mobile, + board_ahci_no_debounce_delay, board_ahci_nomsi, board_ahci_noncq, board_ahci_nosntf, @@ -142,6 +143,13 @@ static const struct ata_port_info ahci_port_info[] = { .udma_mask = ATA_UDMA6, .port_ops = &ahci_ops, }, + [board_ahci_no_debounce_delay] = { + .flags = AHCI_FLAG_COMMON, + .link_flags = ATA_LFLAG_NO_DEBOUNCE_DELAY, + .pio_mask = ATA_PIO4, + .udma_mask = ATA_UDMA6, + .port_ops = &ahci_ops, + }, [board_ahci_nomsi] = { AHCI_HFLAGS (AHCI_HFLAG_NO_MSI), .flags = AHCI_FLAG_COMMON, @@ -442,6 +450,7 @@ static const struct pci_device_id ahci_pci_tbl[] = { board_ahci_al }, /* AMD */ { PCI_VDEVICE(AMD, 0x7800), board_ahci }, /* AMD Hudson-2 */ + { PCI_VDEVICE(AMD, 0x7801), board_ahci_no_debounce_delay }, /* AMD Hudson-2 (AHCI mode) */ { PCI_VDEVICE(AMD, 0x7900), board_ahci }, /* AMD CZ */ { PCI_VDEVICE(AMD, 0x7901), board_ahci_mobile }, /* AMD Green Sardine */ /* AMD is using RAID class only for ahci controllers */