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authoradam radford <aradford@gmail.com>2006-04-11 11:25:09 -0700
committerJames Bottomley <jejb@mulgrave.il.steeleye.com>2006-04-13 13:27:38 -0500
commit1e08dcb39c6b95ec84fc8bad97d5bdce879b76c9 (patch)
treeb96ddfaa7695f83d2bc409bf72a8e2c577ce7212 /drivers/scsi
parente36e0c80137af8f012528938dab2970c26d5ec4c (diff)
downloadlinux-1e08dcb39c6b95ec84fc8bad97d5bdce879b76c9.tar.bz2
[SCSI] 3ware 9000 disable local irqs during kmap_atomic
Equivalent of the same patch for the 3w-xxxx driver. Signed-off-by: Adam Radford <linuxraid@amcc.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Diffstat (limited to 'drivers/scsi')
-rw-r--r--drivers/scsi/3w-9xxx.c9
1 files changed, 7 insertions, 2 deletions
diff --git a/drivers/scsi/3w-9xxx.c b/drivers/scsi/3w-9xxx.c
index 0d2b447c50ed..caeb6d246e57 100644
--- a/drivers/scsi/3w-9xxx.c
+++ b/drivers/scsi/3w-9xxx.c
@@ -65,6 +65,7 @@
2.26.02.005 - Fix use_sg == 0 mapping on systems with 4GB or higher.
2.26.02.006 - Fix 9550SX pchip reset timeout.
Add big endian support.
+ 2.26.02.007 - Disable local interrupts during kmap/unmap_atomic().
*/
#include <linux/module.h>
@@ -88,7 +89,7 @@
#include "3w-9xxx.h"
/* Globals */
-#define TW_DRIVER_VERSION "2.26.02.006"
+#define TW_DRIVER_VERSION "2.26.02.007"
static TW_Device_Extension *twa_device_extension_list[TW_MAX_SLOT];
static unsigned int twa_device_extension_count;
static int twa_major = -1;
@@ -1942,9 +1943,13 @@ static void twa_scsiop_execute_scsi_complete(TW_Device_Extension *tw_dev, int re
}
if (tw_dev->srb[request_id]->use_sg == 1) {
struct scatterlist *sg = (struct scatterlist *)tw_dev->srb[request_id]->request_buffer;
- char *buf = kmap_atomic(sg->page, KM_IRQ0) + sg->offset;
+ char *buf;
+ unsigned long flags = 0;
+ local_irq_save(flags);
+ buf = kmap_atomic(sg->page, KM_IRQ0) + sg->offset;
memcpy(buf, tw_dev->generic_buffer_virt[request_id], sg->length);
kunmap_atomic(buf - sg->offset, KM_IRQ0);
+ local_irq_restore(flags);
}
}
} /* End twa_scsiop_execute_scsi_complete() */