Patch "SCSI: megaraid: Use resource_size_t for PCI resources, not long" has been added to the 3.10-stable tree

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This is a note to let you know that I've just added the patch titled

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

to the 3.10-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     scsi-megaraid-use-resource_size_t-for-pci-resources-not-long.patch
and it can be found in the queue-3.10 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.


>From 11f8a7b31f2140b0dc164bb484281235ffbe51d3 Mon Sep 17 00:00:00 2001
From: Ben Collins <ben.c@xxxxxxxxxxxx>
Date: Fri, 13 Sep 2013 12:46:44 -0400
Subject: SCSI: megaraid: Use resource_size_t for PCI resources, not long

From: Ben Collins <ben.c@xxxxxxxxxxxx>

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@xxxxxxxxxxxx>
Acked-by: Sumit Saxena <sumit.saxena@xxxxxxx>
Signed-off-by: James Bottomley <JBottomley@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

---
 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
@@ -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];
--- a/drivers/scsi/megaraid/megaraid_sas_base.c
+++ b/drivers/scsi/megaraid/megaraid_sas_base.c
@@ -3461,6 +3461,7 @@ 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;
@@ -3469,14 +3470,14 @@ 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");


Patches currently in stable-queue which might be from ben.c@xxxxxxxxxxxx are

queue-3.10/scsi-megaraid-use-resource_size_t-for-pci-resources-not-long.patch
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