diff options
| author | Ben Collins <ben.c@servergy.com> | 2013-09-13 12:46:44 -0400 |
|---|---|---|
| committer | Jiri Slaby <jslaby@suse.cz> | 2015-04-09 14:13:28 +0200 |
| commit | f1fc0fe0607018b435ba2ce8156e0f30033a53f4 (patch) | |
| tree | fa119d765d5c44d2248fa347388d26ee21cc9ca9 /drivers | |
| parent | 0a8212ca85d0d9dc64faaf23b9fce5ca0b2c2fd2 (diff) | |
[SCSI] megaraid: Use resource_size_t for PCI resources, not long
commit 11f8a7b31f2140b0dc164bb484281235ffbe51d3 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: Jiri Slaby <jslaby@suse.cz>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/scsi/megaraid/megaraid_sas.h | 1 | ||||
| -rw-r--r-- | drivers/scsi/megaraid/megaraid_sas_base.c | 5 |
2 files changed, 3 insertions, 3 deletions
diff --git a/drivers/scsi/megaraid/megaraid_sas.h b/drivers/scsi/megaraid/megaraid_sas.h index 0c73ba4bf451..f2bb2f09bff1 100644 --- a/drivers/scsi/megaraid/megaraid_sas.h +++ b/drivers/scsi/megaraid/megaraid_sas.h @@ -1527,7 +1527,6 @@ struct megasas_instance { u32 *reply_queue; dma_addr_t reply_queue_h; - unsigned long base_addr; struct megasas_register_set __iomem *reg_set; u32 *reply_post_host_index_addr[MR_MAX_MSIX_REG_ARRAY]; struct megasas_pd_list pd_list[MEGASAS_MAX_PD]; diff --git a/drivers/scsi/megaraid/megaraid_sas_base.c b/drivers/scsi/megaraid/megaraid_sas_base.c index 855dc7c4cad7..6da7e62b13fb 100644 --- a/drivers/scsi/megaraid/megaraid_sas_base.c +++ b/drivers/scsi/megaraid/megaraid_sas_base.c @@ -3613,6 +3613,7 @@ 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; @@ -3621,14 +3622,14 @@ 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"); |