aec62xx: remove init_dma() method (take 2)

Get rid of the init_dma() method (which had no particular reason to exist) by
folding it into the init_hwif() method. While at it, also perform some cleanup
in the latter method:

- get rid of the useless clearing of hwif->autodma;

- fold the serialization code into one 'if' statement;

- fold setting the drives' 'autotune' and 'autodma' fields into the single
  statements...

Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

diff --git a/drivers/ide/pci/aec62xx.c b/drivers/ide/pci/aec62xx.c
index 7067df2..99184be 100644 (file)
--- a/drivers/ide/pci/aec62xx.c
+++ b/drivers/ide/pci/aec62xx.c
@@ -1,5 +1,5 @@
 /*
- * linux/drivers/ide/pci/aec62xx.c             Version 0.22    Apr 23, 2007
+ * linux/drivers/ide/pci/aec62xx.c             Version 0.23    May 23, 2007
  *
  * Copyright (C) 1999-2002     Andre Hedrick <andre@linux-ide.org>
  * Copyright (C) 2007          MontaVista Software, Inc. <source@mvista.com>
@@ -220,21 +220,18 @@ static unsigned int __devinit init_chipset_aec62xx(struct pci_dev *dev, const ch
 
 static void __devinit init_hwif_aec62xx(ide_hwif_t *hwif)
 {
-       struct pci_dev *dev = hwif->pci_dev;
+       struct pci_dev *dev     = hwif->pci_dev;
+       u8 reg54 = 0,  mask     = hwif->channel ? 0xf0 : 0x0f;
+       unsigned long flags;
 
-       hwif->autodma = 0;
        hwif->tuneproc = &aec62xx_tune_drive;
        hwif->speedproc = &aec62xx_tune_chipset;
 
-       if (dev->device == PCI_DEVICE_ID_ARTOP_ATP850UF)
-               hwif->serialized = hwif->channel;
-
-       if (hwif->mate)
-               hwif->mate->serialized = hwif->serialized;
+       if (dev->device == PCI_DEVICE_ID_ARTOP_ATP850UF && hwif->mate)
+               hwif->mate->serialized = hwif->serialized = 1;
 
        if (!hwif->dma_base) {
-               hwif->drives[0].autotune = 1;
-               hwif->drives[1].autotune = 1;
+               hwif->drives[0].autotune = hwif->drives[1].autotune = 1;
                return;
        }
 
@@ -244,32 +241,21 @@ static void __devinit init_hwif_aec62xx(ide_hwif_t *hwif)
        hwif->ide_dma_check     = &aec62xx_config_drive_xfer_rate;
        hwif->dma_lost_irq      = &aec62xx_dma_lost_irq;
 
-       if (!noautodma)
-               hwif->autodma = 1;
-       hwif->drives[0].autodma = hwif->autodma;
-       hwif->drives[1].autodma = hwif->autodma;
-}
-
-static void __devinit init_dma_aec62xx(ide_hwif_t *hwif, unsigned long dmabase)
-{
-       struct pci_dev *dev     = hwif->pci_dev;
-
        if (dev->device == PCI_DEVICE_ID_ARTOP_ATP850UF) {
-               u8 reg54h = 0;
-               unsigned long flags;
-
                spin_lock_irqsave(&ide_lock, flags);
-               pci_read_config_byte(dev, 0x54, &reg54h);
-               pci_write_config_byte(dev, 0x54, reg54h & ~(hwif->channel ? 0xF0 : 0x0F));
+               pci_read_config_byte (dev, 0x54, &reg54);
+               pci_write_config_byte(dev, 0x54, (reg54 & ~mask));
                spin_unlock_irqrestore(&ide_lock, flags);
-       } else {
-               u8 ata66        = 0;
+       } else if (!hwif->udma_four) {
+               u8 ata66 = 0, mask = hwif->channel ? 0x02 : 0x01;
+
                pci_read_config_byte(hwif->pci_dev, 0x49, &ata66);
-               if (!(hwif->udma_four))
-                       hwif->udma_four = (ata66&(hwif->channel?0x02:0x01))?0:1;
+               hwif->udma_four = (ata66 & mask) ? 0 : 1;
        }
 
-       ide_setup_dma(hwif, dmabase, 8);
+       if (!noautodma)
+               hwif->autodma = 1;
+       hwif->drives[0].autodma = hwif->drives[1].autodma = hwif->autodma;
 }
 
 static int __devinit init_setup_aec62xx(struct pci_dev *dev, ide_pci_device_t *d)
@@ -296,7 +282,6 @@ static ide_pci_device_t aec62xx_chipsets[] __devinitdata = {
                .init_setup     = init_setup_aec62xx,
                .init_chipset   = init_chipset_aec62xx,
                .init_hwif      = init_hwif_aec62xx,
-               .init_dma       = init_dma_aec62xx,
                .channels       = 2,
                .autodma        = AUTODMA,
                .enablebits     = {{0x4a,0x02,0x02}, {0x4a,0x04,0x04}},
@@ -307,7 +292,6 @@ static ide_pci_device_t aec62xx_chipsets[] __devinitdata = {
                .init_setup     = init_setup_aec62xx,
                .init_chipset   = init_chipset_aec62xx,
                .init_hwif      = init_hwif_aec62xx,
-               .init_dma       = init_dma_aec62xx,
                .channels       = 2,
                .autodma        = NOAUTODMA,
                .bootable       = OFF_BOARD,
@@ -317,7 +301,6 @@ static ide_pci_device_t aec62xx_chipsets[] __devinitdata = {
                .init_setup     = init_setup_aec62xx,
                .init_chipset   = init_chipset_aec62xx,
                .init_hwif      = init_hwif_aec62xx,
-               .init_dma       = init_dma_aec62xx,
                .channels       = 2,
                .autodma        = AUTODMA,
                .enablebits     = {{0x4a,0x02,0x02}, {0x4a,0x04,0x04}},
@@ -328,7 +311,6 @@ static ide_pci_device_t aec62xx_chipsets[] __devinitdata = {
                .init_setup     = init_setup_aec6x80,
                .init_chipset   = init_chipset_aec62xx,
                .init_hwif      = init_hwif_aec62xx,
-               .init_dma       = init_dma_aec62xx,
                .channels       = 2,
                .autodma        = AUTODMA,
                .bootable       = OFF_BOARD,
@@ -338,7 +320,6 @@ static ide_pci_device_t aec62xx_chipsets[] __devinitdata = {
                .init_setup     = init_setup_aec6x80,
                .init_chipset   = init_chipset_aec62xx,
                .init_hwif      = init_hwif_aec62xx,
-               .init_dma       = init_dma_aec62xx,
                .channels       = 2,
                .autodma        = AUTODMA,
                .enablebits     = {{0x4a,0x02,0x02}, {0x4a,0x04,0x04}},