diff options
| author | Andrea Monaco <andrea.monaco@autistici.org> | 2021-09-12 21:08:24 +0200 |
|---|---|---|
| committer | Samuel Thibault <samuel.thibault@ens-lyon.org> | 2021-09-12 21:08:24 +0200 |
| commit | f10244db598fce618f403488c73bd3e0d8142237 (patch) | |
| tree | 64997217a6bd009464a1b0cd81b01bf6330114d1 | |
| parent | 2c2cadb29393691506510f755ef1d462eb811b22 (diff) | |
ahci: Do not even try AHCI identify when device is ATAPI
* linux/dev/drivers/block/ahci.c (ahci_probe_port): Avoid trying AHCI
identify when PxCMD.ATAPI is set.
| -rw-r--r-- | linux/dev/drivers/block/ahci.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/linux/dev/drivers/block/ahci.c b/linux/dev/drivers/block/ahci.c index 866618f1..751c7ca2 100644 --- a/linux/dev/drivers/block/ahci.c +++ b/linux/dev/drivers/block/ahci.c @@ -815,9 +815,10 @@ static void ahci_probe_port(const volatile struct ahci_host *ahci_host, const vo writel(readl(&ahci_port->cmd) | PORT_CMD_FIS_RX | PORT_CMD_START, &ahci_port->cmd); - if (ahci_identify(ahci_host, ahci_port, port, WIN_IDENTIFY) >= 2) - /* Try ATAPI */ - ahci_identify(ahci_host, ahci_port, port, WIN_PIDENTIFY); + /* if PxCMD.ATAPI is set, try ATAPI identify; otherwise try AHCI, then ATAPI */ + if (readl(&ahci_port->cmd) & PORT_CMD_ATAPI || + ahci_identify(ahci_host, ahci_port, port, WIN_IDENTIFY) >= 2) + ahci_identify(ahci_host, ahci_port, port, WIN_PIDENTIFY); } /* Probe one AHCI PCI device */ |