diff options
| author | Ben Collins <ben.c@servergy.com> | 2013-09-13 18:46:44 +0200 |
|---|---|---|
| committer | James Bottomley <JBottomley@Parallels.com> | 2013-12-19 16:39:03 +0100 |
| commit | 11f8a7b31f2140b0dc164bb484281235ffbe51d3 (patch) | |
| tree | 6bef4c31f17f7d992e141b99b499807c3fd37a9a /drivers/scsi/megaraid/megaraid_sas_base.c | |
| parent | [SCSI] Update documentation (diff) | |
| download | linux-11f8a7b31f2140b0dc164bb484281235ffbe51d3.tar.xz linux-11f8a7b31f2140b0dc164bb484281235ffbe51d3.zip | |
[SCSI] megaraid: Use resource_size_t for PCI resources, not long
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>
Diffstat (limited to 'drivers/scsi/megaraid/megaraid_sas_base.c')
| -rw-r--r-- | drivers/scsi/megaraid/megaraid_sas_base.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/scsi/megaraid/megaraid_sas_base.c b/drivers/scsi/megaraid/megaraid_sas_base.c index c99812bf2a73..3b7ad10497fe 100644 --- a/drivers/scsi/megaraid/megaraid_sas_base.c +++ b/drivers/scsi/megaraid/megaraid_sas_base.c @@ -3615,6 +3615,7 @@ static int megasas_init_fw(struct megasas_instance *instance) u32 max_sectors_1; u32 max_sectors_2; u32 tmp_sectors, msix_enable, scratch_pad_2; + resource_size_t base_addr; struct megasas_register_set __iomem *reg_set; struct megasas_ctrl_info *ctrl_info; unsigned long bar_list; @@ -3623,14 +3624,14 @@ 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"); |