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[SCSI] 3ware 9000 driver >4GB memory fix 

The attached patch fixes a bug in the 3ware 9000 series driver:

- Fix use_sg == 0 mapping on systems with 4GB or higher.

  This fixes REPORT_LUNS (0xa0) failing with 3ware 9000 controllers on systems
  with lots of ram, mentioned in bugzilla # 6009:

      http://bugzilla.kernel.org/show_bug.cgi?id=6009

Signed-off-by: Adam Radford <linuxraid@amcc.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
This commit is contained in:
adam radford 2006-02-05 14:51:43 -08:00 committed by
parent 40cdc840dc
commit 62288f105b
1 changed files with 4 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
drivers/scsi/3w-9xxx.c
View File

@ -61,6 +61,7 @@
Add support for embedded firmware error strings.
2.26.02.003 - Correctly handle single sgl's with use_sg=1.
2.26.02.004 - Add support for 9550SX controllers.
2.26.02.005 - Fix use_sg == 0 mapping on systems with 4GB or higher.
*/
#include <linux/module.h>
@ -84,7 +85,7 @@
#include "3w-9xxx.h"
/* Globals */
#define TW_DRIVER_VERSION "2.26.02.004"
#define TW_DRIVER_VERSION "2.26.02.005"
static TW_Device_Extension *twa_device_extension_list[TW_MAX_SLOT];
static unsigned int twa_device_extension_count;
static int twa_major = -1;
@ -1408,7 +1409,7 @@ static dma_addr_t twa_map_scsi_single_data(TW_Device_Extension *tw_dev, int requ
dma_addr_t mapping;
struct scsi_cmnd *cmd = tw_dev->srb[request_id];
struct pci_dev *pdev = tw_dev->tw_pci_dev;
int retval = 0;
dma_addr_t retval = 0;
if (cmd->request_bufflen == 0) {
retval = 0;
@ -1798,7 +1799,7 @@ static int twa_scsiop_execute_scsi(TW_Device_Extension *tw_dev, int request_id,
int i, sg_count;
struct scsi_cmnd *srb = NULL;
struct scatterlist *sglist = NULL;
u32 buffaddr = 0x0;
dma_addr_t buffaddr = 0x0;
int retval = 1;
if (tw_dev->srb[request_id]) {