Merge bk://bart.bkbits.net/ide-2.6

into ppc970.osdl.org:/home/torvalds/v2.6/linux

arch/i386/kernel/signal.c

@@ -600,7 +600,9 @@ int fastcall do_signal(struct pt_regs *regs, sigset_t *oldset)
 		 * have been cleared if the watchpoint triggered
 		 * inside the kernel.
 		 */
-		__asm__("movl %0,%%db7"	: : "r" (current->thread.debugreg[7]));
+		if (unlikely(current->thread.debugreg[7])) {
+			__asm__("movl %0,%%db7"	: : "r" (current->thread.debugreg[7]));
+		}
 
 		/* Whee!  Actually deliver the signal.  */
 		handle_signal(signr, &info, &ka, oldset, regs);

drivers/scsi/libata-scsi.c

@@ -742,13 +742,13 @@ static unsigned int ata_scsi_rbuf_get(struct scsi_cmnd *cmd, u8 **buf_out)
  *	spin_lock_irqsave(host_set lock)
  */
 
-static inline void ata_scsi_rbuf_put(struct scsi_cmnd *cmd)
+static inline void ata_scsi_rbuf_put(struct scsi_cmnd *cmd, u8 *buf)
 {
 	if (cmd->use_sg) {
 		struct scatterlist *sg;
 
 		sg = (struct scatterlist *) cmd->request_buffer;
-		kunmap_atomic(sg->page, KM_USER0);
+		kunmap_atomic(buf - sg->offset, KM_USER0);
 	}
 }
 
@@ -778,7 +778,7 @@ void ata_scsi_rbuf_fill(struct ata_scsi_args *args,
 	buflen = ata_scsi_rbuf_get(cmd, &rbuf);
 	memset(rbuf, 0, buflen);
 	rc = actor(args, rbuf, buflen);
-	ata_scsi_rbuf_put(cmd);
+	ata_scsi_rbuf_put(cmd, rbuf);
 
 	if (rc)
 		ata_bad_cdb(cmd, args->done);
@@ -1264,7 +1264,7 @@ static int atapi_qc_complete(struct ata_queued_cmd *qc, u8 drv_stat)
 			buflen = ata_scsi_rbuf_get(cmd, &buf);
 			buf[2] = 0x5;
 			buf[3] = (buf[3] & 0xf0) | 2;
-			ata_scsi_rbuf_put(cmd);
+			ata_scsi_rbuf_put(cmd, buf);
 		}
 		cmd->result = SAM_STAT_GOOD;
 	}