diff options
| author |   Ingo Molnar <mingo@elte.hu> | 2009-05-11 14:44:27 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-05-11 14:44:31 +0200 |
| commit | 41fb454ebe6024f5c1e3b3cbc0abc0da762e7b51 (patch) | |
| tree | 51c50bcb67a5039448ddfa1869d7948cab1217e9 /drivers/ata/libata-scsi.c | |
| parent | x86 gart: reimplement IOMMU_LEAK feature by using DMA_API_DEBUG (diff) | |
| parent | Linux 2.6.30-rc5 (diff) | |
| download | linux-dev-41fb454ebe6024f5c1e3b3cbc0abc0da762e7b51.tar.xz linux-dev-41fb454ebe6024f5c1e3b3cbc0abc0da762e7b51.zip | |
Merge commit 'v2.6.30-rc5' into core/iommu
Merge reason: core/iommu was on an .30-rc1 base,
update it to .30-rc5 to refresh.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'drivers/ata/libata-scsi.c')
| -rw-r--r-- | drivers/ata/libata-scsi.c | 30 |
1 files changed, 26 insertions, 4 deletions
diff --git a/drivers/ata/libata-scsi.c b/drivers/ata/libata-scsi.c index b9747fa59e54..2733b0c90b75 100644 --- a/drivers/ata/libata-scsi.c +++ b/drivers/ata/libata-scsi.c @@ -647,23 +647,45 @@ int ata_task_ioctl(struct scsi_device *scsidev, void __user *arg) return rc; } +static int ata_ioc32(struct ata_port *ap) +{ + if (ap->flags & ATA_FLAG_PIO_DMA) + return 1; + if (ap->pflags & ATA_PFLAG_PIO32) + return 1; + return 0; +} + int ata_sas_scsi_ioctl(struct ata_port *ap, struct scsi_device *scsidev, int cmd, void __user *arg) { int val = -EINVAL, rc = -EINVAL; + unsigned long flags; switch (cmd) { case ATA_IOC_GET_IO32: - val = 0; + spin_lock_irqsave(ap->lock, flags); + val = ata_ioc32(ap); + spin_unlock_irqrestore(ap->lock, flags); if (copy_to_user(arg, &val, 1)) return -EFAULT; return 0; case ATA_IOC_SET_IO32: val = (unsigned long) arg; - if (val != 0) - return -EINVAL; - return 0; + rc = 0; + spin_lock_irqsave(ap->lock, flags); + if (ap->pflags & ATA_PFLAG_PIO32CHANGE) { + if (val) + ap->pflags |= ATA_PFLAG_PIO32; + else + ap->pflags &= ~ATA_PFLAG_PIO32; + } else { + if (val != ata_ioc32(ap)) + rc = -EINVAL; + } + spin_unlock_irqrestore(ap->lock, flags); + return rc; case HDIO_GET_IDENTITY: return ata_get_identity(ap, scsidev, arg); |