Messages in this thread Patch in this message | | | From | Greg Kroah-Hartman <> | Subject | [PATCH 3.4 7/8] SCSI: megaraid: Use resource_size_t for PCI resources, not long | Date | Thu, 12 Jun 2014 16:22:54 -0700 |
| |
3.4-stable review patch. If anyone has any objections, please let me know.
------------------
From: Ben Collins <ben.c@servergy.com>
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: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
--- drivers/scsi/megaraid/megaraid_sas.h | 1 - drivers/scsi/megaraid/megaraid_sas_base.c | 5 +++-- 2 files changed, 3 insertions(+), 3 deletions(-)
--- a/drivers/scsi/megaraid/megaraid_sas.h +++ b/drivers/scsi/megaraid/megaraid_sas.h @@ -1294,7 +1294,6 @@ 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]; --- a/drivers/scsi/megaraid/megaraid_sas_base.c +++ b/drivers/scsi/megaraid/megaraid_sas_base.c @@ -3445,6 +3445,7 @@ static int megasas_init_fw(struct megasa 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; @@ -3453,14 +3454,14 @@ static int megasas_init_fw(struct megasa /* 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");
| |