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pata_efar: fix register naming used in efar_set_piomode() 

Rename 'idetm_port' and 'idetm_data' variables to 'master_port'
and 'master_data' respectively to match register naming used in
efar_set_dmamode() and in ata_piix.c.

Fix efar_set_piomode() documentation while at it.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
This commit is contained in:
Bartlomiej Zolnierkiewicz 2011-10-13 17:44:14 +02:00 committed by Jeff Garzik
parent 5a29854867
commit a0da19149f
1 changed files with 11 additions and 11 deletions
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22
drivers/ata/pata_efar.c
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@ -73,7 +73,7 @@ static DEFINE_SPINLOCK(efar_lock);
/** /**
* efar_set_piomode - Initialize host controller PATA PIO timings * efar_set_piomode - Initialize host controller PATA PIO timings
* @ap: Port whose timings we are configuring * @ap: Port whose timings we are configuring
* @adev: um * @adev: Device to program
* *
* Set PIO mode for device, in host controller PCI config space. * Set PIO mode for device, in host controller PCI config space.
* *
@ -85,9 +85,9 @@ static void efar_set_piomode (struct ata_port *ap, struct ata_device *adev)
{ {
unsigned int pio = adev->pio_mode - XFER_PIO_0; unsigned int pio = adev->pio_mode - XFER_PIO_0;
struct pci_dev *dev = to_pci_dev(ap->host->dev); struct pci_dev *dev = to_pci_dev(ap->host->dev);
unsigned int idetm_port= ap->port_no ? 0x42 : 0x40; unsigned int master_port = ap->port_no ? 0x42 : 0x40;
unsigned long flags; unsigned long flags;
u16 idetm_data; u16 master_data;
u8 udma_enable; u8 udma_enable;
int control = 0; int control = 0;
@ -113,20 +113,20 @@ static void efar_set_piomode (struct ata_port *ap, struct ata_device *adev)
spin_lock_irqsave(&efar_lock, flags); spin_lock_irqsave(&efar_lock, flags);
pci_read_config_word(dev, idetm_port, &idetm_data); pci_read_config_word(dev, master_port, &master_data);
/* Set PPE, IE, and TIME as appropriate */ /* Set PPE, IE, and TIME as appropriate */
if (adev->devno == 0) { if (adev->devno == 0) {
idetm_data &= 0xCCF0; master_data &= 0xCCF0;
idetm_data |= control; master_data |= control;
idetm_data |= (timings[pio][0] << 12) | master_data |= (timings[pio][0] << 12) |
(timings[pio][1] << 8); (timings[pio][1] << 8);
} else { } else {
int shift = 4 * ap->port_no; int shift = 4 * ap->port_no;
u8 slave_data; u8 slave_data;
idetm_data &= 0xFF0F; master_data &= 0xFF0F;
idetm_data |= (control << 4); master_data |= (control << 4);
/* Slave timing in separate register */ /* Slave timing in separate register */
pci_read_config_byte(dev, 0x44, &slave_data); pci_read_config_byte(dev, 0x44, &slave_data);
@ -135,8 +135,8 @@ static void efar_set_piomode (struct ata_port *ap, struct ata_device *adev)
pci_write_config_byte(dev, 0x44, slave_data); pci_write_config_byte(dev, 0x44, slave_data);
} }
idetm_data |= 0x4000; /* Ensure SITRE is set */ master_data |= 0x4000; /* Ensure SITRE is set */
pci_write_config_word(dev, idetm_port, idetm_data); pci_write_config_word(dev, master_port, master_data);
pci_read_config_byte(dev, 0x48, &udma_enable); pci_read_config_byte(dev, 0x48, &udma_enable);
udma_enable &= ~(1 << (2 * ap->port_no + adev->devno)); udma_enable &= ~(1 << (2 * ap->port_no + adev->devno));