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| author | Randy Dunlap <randy.dunlap@oracle.com> | 2011-05-20 09:10:04 -0700 |
|---|---|---|
| committer | Randy Dunlap <randy.dunlap@oracle.com> | 2011-05-20 09:10:04 -0700 |
| commit | 2f3e4af471e38e0658e701973238ae4b5e50fcd6 (patch) | |
| tree | fbfc99c0d975e38ff80f4ff3239a9fc0567b8a4d /drivers/ata/libahci.c | |
| parent | 61516587513c84ac26e68e3ab008dc6e965d0378 (diff) | |
| parent | d410fa4ef99112386de5f218dd7df7b4fca910b4 (diff) | |
| download | op-kernel-dev-2f3e4af471e38e0658e701973238ae4b5e50fcd6.zip op-kernel-dev-2f3e4af471e38e0658e701973238ae4b5e50fcd6.tar.gz | |
Merge branch 'docs-security' into docs-move
Diffstat (limited to 'drivers/ata/libahci.c')
| -rw-r--r-- | drivers/ata/libahci.c | 21 |
1 files changed, 0 insertions, 21 deletions
diff --git a/drivers/ata/libahci.c b/drivers/ata/libahci.c index ff9d832..d38c40f 100644 --- a/drivers/ata/libahci.c +++ b/drivers/ata/libahci.c @@ -561,27 +561,6 @@ void ahci_start_engine(struct ata_port *ap) { void __iomem *port_mmio = ahci_port_base(ap); u32 tmp; - u8 status; - - status = readl(port_mmio + PORT_TFDATA) & 0xFF; - - /* - * At end of section 10.1 of AHCI spec (rev 1.3), it states - * Software shall not set PxCMD.ST to 1 until it is determined - * that a functoinal device is present on the port as determined by - * PxTFD.STS.BSY=0, PxTFD.STS.DRQ=0 and PxSSTS.DET=3h - * - * Even though most AHCI host controllers work without this check, - * specific controller will fail under this condition - */ - if (status & (ATA_BUSY | ATA_DRQ)) - return; - else { - ahci_scr_read(&ap->link, SCR_STATUS, &tmp); - - if ((tmp & 0xf) != 0x3) - return; - } /* start DMA */ tmp = readl(port_mmio + PORT_CMD); |
