[PATCH 3/10] mpt2sas: User resource_size_t instead of unsigned long

["Kashyap, Desai" <kashyap.desai@xxxxxxx>]

Use resource_size_t to define the type resource for the system interface
register set.
The existing implementation was using "unsigned long" which would be 32 bit
in 32 bit OS.  If 32 bit OS is using 64 bit physical
address space for the system interface register set, we need to shift to
using resource_size_t which takes care of physical address space.

Signed-off-by: Kashyap Desai <kashyap.desai@xxxxxxx>
Reviewed-by: Eric Moore <eric.moore@xxxxxxx>
---
diff --git a/drivers/scsi/mpt2sas/mpt2sas_base.c b/drivers/scsi/mpt2sas/mpt2sas_base.c
index 89d0240..bbd4f71 100644
--- a/drivers/scsi/mpt2sas/mpt2sas_base.c
+++ b/drivers/scsi/mpt2sas/mpt2sas_base.c
@@ -1222,6 +1222,8 @@ mpt2sas_base_map_resources(struct MPT2SAS_ADAPTER *ioc)
 	u32 memap_sz;
 	u32 pio_sz;
 	int i, r = 0;
+	u64 pio_chip = 0;
+	u64 chip_phys = 0;
 
 	dinitprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s\n",
 	    ioc->name, __func__));
@@ -1255,12 +1257,13 @@ mpt2sas_base_map_resources(struct MPT2SAS_ADAPTER *ioc)
 		if (pci_resource_flags(pdev, i) & PCI_BASE_ADDRESS_SPACE_IO) {
 			if (pio_sz)
 				continue;
-			ioc->pio_chip = pci_resource_start(pdev, i);
+			pio_chip = (u64)pci_resource_start(pdev, i);
 			pio_sz = pci_resource_len(pdev, i);
 		} else {
 			if (memap_sz)
 				continue;
 			ioc->chip_phys = pci_resource_start(pdev, i);
+			chip_phys = (u64)ioc->chip_phys;
 			memap_sz = pci_resource_len(pdev, i);
 			ioc->chip = ioremap(ioc->chip_phys, memap_sz);
 			if (ioc->chip == NULL) {
@@ -1280,10 +1283,10 @@ mpt2sas_base_map_resources(struct MPT2SAS_ADAPTER *ioc)
 	printk(MPT2SAS_INFO_FMT "%s: IRQ %d\n",
 	    ioc->name,  ((ioc->msix_enable) ? "PCI-MSI-X enabled" :
 	    "IO-APIC enabled"), ioc->pci_irq);
-	printk(MPT2SAS_INFO_FMT "iomem(0x%lx), mapped(0x%p), size(%d)\n",
-	    ioc->name, ioc->chip_phys, ioc->chip, memap_sz);
-	printk(MPT2SAS_INFO_FMT "ioport(0x%lx), size(%d)\n",
-	    ioc->name, ioc->pio_chip, pio_sz);
+	printk(MPT2SAS_INFO_FMT "iomem(0x%016llx), mapped(0x%p), size(%d)\n",
+	    ioc->name, (unsigned long long)chip_phys, ioc->chip, memap_sz);
+	printk(MPT2SAS_INFO_FMT "ioport(0x%016llx), size(%d)\n",
+	    ioc->name, (unsigned long long)pio_chip, pio_sz);
 
 	return 0;
 
diff --git a/drivers/scsi/mpt2sas/mpt2sas_base.h b/drivers/scsi/mpt2sas/mpt2sas_base.h
index bb4f146..12fa18b 100644
--- a/drivers/scsi/mpt2sas/mpt2sas_base.h
+++ b/drivers/scsi/mpt2sas/mpt2sas_base.h
@@ -464,7 +464,6 @@ typedef void (*MPT_ADD_SGE)(void *paddr, u32 flags_length, dma_addr_t dma_addr);
  * @pdev: pci pdev object
  * @chip: memory mapped register space
  * @chip_phys: physical addrss prior to mapping
- * @pio_chip: I/O mapped register space
  * @logging_level: see mpt2sas_debug.h
  * @fwfault_debug: debuging FW timeouts
  * @ir_firmware: IR firmware present
@@ -587,8 +586,7 @@ struct MPT2SAS_ADAPTER {
 	char		tmp_string[MPT_STRING_LENGTH];
 	struct pci_dev	*pdev;
 	Mpi2SystemInterfaceRegs_t __iomem *chip;
-	unsigned long	chip_phys;
-	unsigned long	pio_chip;
+	resource_size_t	chip_phys;
 	int		logging_level;
 	int		fwfault_debug;
 	u8		ir_firmware;
--
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