[PATCH 2.6.25.10 2/2] libata: fix locking for kmap_atomic

[Jakub W. Jozwicki]

Change locking surrounding kmap_atomic from local_irqsave to 
local_irqsave_nort. This fixes issues with PREEMPT_RT.
 
Signed-off-by:  Jakub Jozwicki <jozwicki@xxxxxxxx>

--- linux-2.6.25.10/drivers/ata/libata-scsi.c	2008-07-03 05:46:47.000000000 
+0200
+++ linux-2.6.25.10-rt7/drivers/ata/libata-scsi.c	2008-07-13 
00:47:51.128016829 +0200
@@ -1705,14 +1705,14 @@
 	struct scsi_cmnd *cmd = args->cmd;
 	unsigned long flags;
 
-	local_irq_save(flags);
+	local_irq_save_nort(flags);
 
 	buflen = ata_scsi_rbuf_get(cmd, &rbuf);
 	memset(rbuf, 0, buflen);
 	rc = actor(args, rbuf, buflen);
 	ata_scsi_rbuf_put(cmd, rbuf);
 
-	local_irq_restore(flags);
+	local_irq_restore_nort(flags);
 
 	if (rc == 0)
 		cmd->result = SAM_STAT_GOOD;
@@ -2489,7 +2489,7 @@
 			unsigned int buflen;
 			unsigned long flags;
 
-			local_irq_save(flags);
+			local_irq_save_nort(flags);
 
 			buflen = ata_scsi_rbuf_get(cmd, &buf);
 
@@ -2508,7 +2508,7 @@
 
 			ata_scsi_rbuf_put(cmd, buf);
 
-			local_irq_restore(flags);
+			local_irq_restore_nort(flags);
 		}
 
 		cmd->result = SAM_STAT_GOOD;
--
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