[PATCH] sgiioc4.c cleanup weak symbol and error numbers

From: Jes Sorensen <jes@trained-monkey.org>

The included patch removes the usage of weak symbols from sgiioc4.c now
that we have the Kconfig issue sorted as well as cleans up the error no
handling (instead of return 1 on error) and adds a check for the return
value on snia_pci_endian_set as suggested by Christoph.

drivers/ide/pci/sgiioc4.c

@@ -23,7 +23,6 @@
  * http://oss.sgi.com/projects/GenInfo/NoticeExplan
  */
 
-#include <linux/config.h>
 #include <linux/module.h>
 #include <linux/types.h>
 #include <linux/pci.h>
@@ -686,7 +685,7 @@ sgiioc4_ide_setup_pci_device(struct pci_dev *dev, ide_pci_device_t * d)
 			"0x%p to 0x%p ALREADY in use\n",
 		       __FUNCTION__, hwif->name, (void *) base,
 		       (void *) base + IOC4_CMD_CTL_BLK_SIZE);
-		return 1;
+		return -ENOMEM;
 	}
 
 	if (hwif->io_ports[IDE_DATA_OFFSET] != base) {
@@ -726,20 +725,21 @@ typedef enum pciio_endian_e {
 	PCIDMA_ENDIAN_BIG,
 	PCIDMA_ENDIAN_LITTLE
 } pciio_endian_t;
-pciio_endian_t __attribute__ ((weak)) snia_pciio_endian_set(struct pci_dev
-					    *pci_dev, pciio_endian_t device_end,
-					    pciio_endian_t desired_end);
+pciio_endian_t snia_pciio_endian_set(struct pci_dev
+				     *pci_dev, pciio_endian_t device_end,
+				     pciio_endian_t desired_end);
 
 static unsigned int __init
 pci_init_sgiioc4(struct pci_dev *dev, ide_pci_device_t * d)
 {
 	unsigned int class_rev;
+	pciio_endian_t endian_status;
 
 	if (pci_enable_device(dev)) {
 		printk(KERN_ERR
 		       "Failed to enable device %s at slot %s\n",
 		       d->name, dev->slot_name);
-		return 1;
+		return -ENODEV;
 	}
 	pci_set_master(dev);
 
@@ -751,18 +751,17 @@ pci_init_sgiioc4(struct pci_dev *dev, ide_pci_device_t * d)
 		printk(KERN_ERR "Skipping %s IDE controller in slot %s: "
 			"firmware is obsolete - please upgrade to revision"
 			"46 or higher\n", d->name, dev->slot_name);
-		return 1;
+		return -ENODEV;
 	}
 
 	/* Enable Byte Swapping in the PIC... */
-	if (snia_pciio_endian_set) {
-		snia_pciio_endian_set(dev, PCIDMA_ENDIAN_LITTLE,
-				      PCIDMA_ENDIAN_BIG);
-	} else {
+	endian_status = snia_pciio_endian_set(dev, PCIDMA_ENDIAN_LITTLE,
+					      PCIDMA_ENDIAN_BIG);
+	if (endian_status != PCIDMA_ENDIAN_BIG) {
 		printk(KERN_ERR
 		       "Failed to set endianness for device %s at slot %s\n",
 		       d->name, dev->slot_name);
-		return 1;
+		return -ENODEV;
 	}
 
 	return sgiioc4_ide_setup_pci_device(dev, d);