renegade-project/linux-next
2
0
Fork 0
mirror of https://github.com/edk2-porting/linux-next.git synced 2024-12-15 08:44:14 +08:00
Code

libata: Remove excess delay in the tf_load path

Browse Source 
We don't need to stall and wait after loading the task file and before
issuing a command, so don't do it. This shows up on profiles and is not
needed.

Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
This commit is contained in:
Alan Cox 2010-05-05 10:24:57 +01:00 committed by Jeff Garzik
parent 95cc2c70c1
commit 978c066691
2 changed files with 0 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
drivers/ata/libata-sff.c
View File

@ -604,7 +604,6 @@ void ata_sff_tf_load(struct ata_port *ap, const struct ata_taskfile *tf)
if (ioaddr->ctl_addr) if (ioaddr->ctl_addr)
iowrite8(tf->ctl, ioaddr->ctl_addr); iowrite8(tf->ctl, ioaddr->ctl_addr);
ap->last_ctl = tf->ctl; ap->last_ctl = tf->ctl;
ata_wait_idle(ap);
} }
if (is_addr && (tf->flags & ATA_TFLAG_LBA48)) { if (is_addr && (tf->flags & ATA_TFLAG_LBA48)) {
@ -640,8 +639,6 @@ void ata_sff_tf_load(struct ata_port *ap, const struct ata_taskfile *tf)
iowrite8(tf->device, ioaddr->device_addr); iowrite8(tf->device, ioaddr->device_addr);
VPRINTK("device 0x%X\n", tf->device); VPRINTK("device 0x%X\n", tf->device);
} }
ata_wait_idle(ap);
} }
EXPORT_SYMBOL_GPL(ata_sff_tf_load); EXPORT_SYMBOL_GPL(ata_sff_tf_load);

2
drivers/ata/pata_via.c
View File

@ -417,8 +417,6 @@ static void via_tf_load(struct ata_port *ap, const struct ata_taskfile *tf)
tf->lbam, tf->lbam,
tf->lbah); tf->lbah);
} }
ata_wait_idle(ap);
} }
static int via_port_start(struct ata_port *ap) static int via_port_start(struct ata_port *ap)