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SCSI: megaraid: Use resource_size_t for PCI resources, not long

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commit 11f8a7b31f upstream.

The assumption that sizeof(long) >= sizeof(resource_size_t) can lead to
truncation of the PCI resource address, meaning this driver didn't work
on 32-bit systems with 64-bit PCI adressing ranges.

Signed-off-by: Ben Collins <ben.c@servergy.com>
Acked-by: Sumit Saxena <sumit.saxena@lsi.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Ben Collins
2013-09-13 12:46:44 -04:00
committed by Greg Kroah-Hartman
parent 553a87251d
commit 2290f5a6ee
2 changed files with 3 additions and 3 deletions
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1
drivers/scsi/megaraid/megaraid_sas.h
View File

@@ -1295,7 +1295,6 @@ struct megasas_instance {
u32 *reply_queue;
dma_addr_t reply_queue_h;
unsigned long base_addr;
struct megasas_register_set __iomem *reg_set;
struct megasas_pd_list pd_list[MEGASAS_MAX_PD];

5
drivers/scsi/megaraid/megaraid_sas_base.c
View File

@@ -3461,6 +3461,7 @@ static int megasas_init_fw(struct megasas_instance *instance)
u32 max_sectors_1;
u32 max_sectors_2;
u32 tmp_sectors, msix_enable;
resource_size_t base_addr;
struct megasas_register_set __iomem *reg_set;
struct megasas_ctrl_info *ctrl_info;
unsigned long bar_list;
@@ -3469,14 +3470,14 @@ static int megasas_init_fw(struct megasas_instance *instance)
/* Find first memory bar */
bar_list = pci_select_bars(instance->pdev, IORESOURCE_MEM);
instance->bar = find_first_bit(&bar_list, sizeof(unsigned long));
instance->base_addr = pci_resource_start(instance->pdev, instance->bar);
if (pci_request_selected_regions(instance->pdev, instance->bar,
"megasas: LSI")) {
printk(KERN_DEBUG "megasas: IO memory region busy!\n");
return -EBUSY;
}
instance->reg_set = ioremap_nocache(instance->base_addr, 8192);
base_addr = pci_resource_start(instance->pdev, instance->bar);
instance->reg_set = ioremap_nocache(base_addr, 8192);
if (!instance->reg_set) {
printk(KERN_DEBUG "megasas: Failed to map IO mem\n");