[SCSI] qla2xxx: Fix for 32-bit platforms with 64-bit resources.

The driver stores the contents of PCI resources into unsigned
long's before ioremapping. This breaks on 32-bit platforms which
support 64-bit MMIO resources.

Correct code by removing the temporary variables used during MMIO
PIO mapping and using resource_size_t where applicable.  Also
correct a small typo in a printk() where the wrong region number
was displayed.

Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>

2 files changed, 8 insertions, 17 deletions

diff --git a/drivers/scsi/qla2xxx/qla_def.h b/drivers/scsi/qla2xxx/qla_def.h
index a33d3d57a17e..d0b78af60f7b 100644
--- a/drivers/scsi/qla2xxx/qla_def.h
+++ b/drivers/scsi/qla2xxx/qla_def.h
@@ -2271,8 +2271,7 @@ typedef struct scsi_qla_host {
 
         int             bars;
         device_reg_t __iomem *iobase;           /* Base I/O address */
-        unsigned long   pio_address;
-        unsigned long   pio_length;
+        resource_size_t pio_address;
 #define MIN_IOBASE_LEN          0x100
 
         /* ISP ring lock, rings, and indexes */
diff --git a/drivers/scsi/qla2xxx/qla_os.c b/drivers/scsi/qla2xxx/qla_os.c
index a5bcf1f390b3..df1694a2f875 100644
--- a/drivers/scsi/qla2xxx/qla_os.c
+++ b/drivers/scsi/qla2xxx/qla_os.c
@@ -1479,8 +1479,7 @@ qla2x00_set_isp_flags(scsi_qla_host_t *ha)
 static int
 qla2x00_iospace_config(scsi_qla_host_t *ha)
 {
-        unsigned long   pio, pio_len, pio_flags;
-        unsigned long   mmio, mmio_len, mmio_flags;
+        resource_size_t pio;
 
         if (pci_request_selected_regions(ha->pdev, ha->bars,
             QLA2XXX_DRIVER_NAME)) {
@@ -1495,10 +1494,8 @@ qla2x00_iospace_config(scsi_qla_host_t *ha)
 
         /* We only need PIO for Flash operations on ISP2312 v2 chips. */
         pio = pci_resource_start(ha->pdev, 0);
-        pio_len = pci_resource_len(ha->pdev, 0);
-        pio_flags = pci_resource_flags(ha->pdev, 0);
-        if (pio_flags & IORESOURCE_IO) {
-                if (pio_len < MIN_IOBASE_LEN) {
+        if (pci_resource_flags(ha->pdev, 0) & IORESOURCE_IO) {
+                if (pci_resource_len(ha->pdev, 0) < MIN_IOBASE_LEN) {
                         qla_printk(KERN_WARNING, ha,
                             "Invalid PCI I/O region size (%s)...\n",
                                 pci_name(ha->pdev));
@@ -1511,28 +1508,23 @@ qla2x00_iospace_config(scsi_qla_host_t *ha)
                 pio = 0;
         }
         ha->pio_address = pio;
-        ha->pio_length = pio_len;
 
 skip_pio:
         /* Use MMIO operations for all accesses. */
-        mmio = pci_resource_start(ha->pdev, 1);
-        mmio_len = pci_resource_len(ha->pdev, 1);
-        mmio_flags = pci_resource_flags(ha->pdev, 1);
-
-        if (!(mmio_flags & IORESOURCE_MEM)) {
+        if (!(pci_resource_flags(ha->pdev, 1) & IORESOURCE_MEM)) {
                 qla_printk(KERN_ERR, ha,
-                    "region #0 not an MMIO resource (%s), aborting\n",
+                    "region #1 not an MMIO resource (%s), aborting\n",
                     pci_name(ha->pdev));
                 goto iospace_error_exit;
         }
-        if (mmio_len < MIN_IOBASE_LEN) {
+        if (pci_resource_len(ha->pdev, 1) < MIN_IOBASE_LEN) {
                 qla_printk(KERN_ERR, ha,
                     "Invalid PCI mem region size (%s), aborting\n",
                         pci_name(ha->pdev));
                 goto iospace_error_exit;
         }
 
-        ha->iobase = ioremap(mmio, MIN_IOBASE_LEN);
+        ha->iobase = ioremap(pci_resource_start(ha->pdev, 1), MIN_IOBASE_LEN);
         if (!ha->iobase) {
                 qla_printk(KERN_ERR, ha,
                     "cannot remap MMIO (%s), aborting\n", pci_name(ha->pdev));