From: Matthew Wilcox <matthew@wil.cx>
Date: Wed, 26 Oct 2005 04:16:02 +0000 (-0600)
Subject: [SCSI] ncr53c8xx: Cleanup namespace collision with ktimers
X-Git-Tag: v2.6.15-rc1~723^2~2^2~50^2~4
X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=f2be34a3f30a1595f5d9c8e7d0bec4d8d3626047;p=linux-2.6

[SCSI] ncr53c8xx: Cleanup namespace collision with ktimers

Replace the mcr53c8xx roll your own ktime_... macros with the correct
time_after() et al.

Signed-off-by: Matthew Wilcox <matthew@wil.cx>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
---

diff --git a/drivers/scsi/ncr53c8xx.c b/drivers/scsi/ncr53c8xx.c
index 519486d24b..9a4f576c0d 100644
--- a/drivers/scsi/ncr53c8xx.c
+++ b/drivers/scsi/ncr53c8xx.c
@@ -3481,8 +3481,8 @@ static int ncr_queue_command (struct ncb *np, struct scsi_cmnd *cmd)
 	**----------------------------------------------------
 	*/
 	if (np->settle_time && cmd->timeout_per_command >= HZ) {
-		u_long tlimit = ktime_get(cmd->timeout_per_command - HZ);
-		if (ktime_dif(np->settle_time, tlimit) > 0)
+		u_long tlimit = jiffies + cmd->timeout_per_command - HZ;
+		if (time_after(np->settle_time, tlimit))
 			np->settle_time = tlimit;
 	}
 
@@ -3516,7 +3516,7 @@ static int ncr_queue_command (struct ncb *np, struct scsi_cmnd *cmd)
 		**	Force ordered tag if necessary to avoid timeouts 
 		**	and to preserve interactivity.
 		*/
-		if (lp && ktime_exp(lp->tags_stime)) {
+		if (lp && time_after(jiffies, lp->tags_stime)) {
 			if (lp->tags_smap) {
 				order = M_ORDERED_TAG;
 				if ((DEBUG_FLAGS & DEBUG_TAGS)||bootverbose>2){ 
@@ -3524,7 +3524,7 @@ static int ncr_queue_command (struct ncb *np, struct scsi_cmnd *cmd)
 						"ordered tag forced.\n");
 				}
 			}
-			lp->tags_stime = ktime_get(3*HZ);
+			lp->tags_stime = jiffies + 3*HZ;
 			lp->tags_smap = lp->tags_umap;
 		}
 
@@ -3792,7 +3792,7 @@ static int ncr_reset_scsi_bus(struct ncb *np, int enab_int, int settle_delay)
 	u32 term;
 	int retv = 0;
 
-	np->settle_time	= ktime_get(settle_delay * HZ);
+	np->settle_time	= jiffies + settle_delay * HZ;
 
 	if (bootverbose > 1)
 		printk("%s: resetting, "
@@ -5044,7 +5044,7 @@ static void ncr_setup_tags (struct ncb *np, struct scsi_device *sdev)
 
 static void ncr_timeout (struct ncb *np)
 {
-	u_long	thistime = ktime_get(0);
+	u_long	thistime = jiffies;
 
 	/*
 	**	If release process in progress, let's go
@@ -5057,7 +5057,7 @@ static void ncr_timeout (struct ncb *np)
 		return;
 	}
 
-	np->timer.expires = ktime_get(SCSI_NCR_TIMER_INTERVAL);
+	np->timer.expires = jiffies + SCSI_NCR_TIMER_INTERVAL;
 	add_timer(&np->timer);
 
 	/*
@@ -5336,8 +5336,8 @@ void ncr_exception (struct ncb *np)
 	**=========================================================
 	*/
 
-	if (ktime_exp(np->regtime)) {
-		np->regtime = ktime_get(10*HZ);
+	if (time_after(jiffies, np->regtime)) {
+		np->regtime = jiffies + 10*HZ;
 		for (i = 0; i<sizeof(np->regdump); i++)
 			((char*)&np->regdump)[i] = INB_OFF(i);
 		np->regdump.nc_dstat = dstat;
@@ -5453,7 +5453,7 @@ static int ncr_int_sbmc (struct ncb *np)
 		**	Suspend command processing for 1 second and 
 		**	reinitialize all except the chip.
 		*/
-		np->settle_time	= ktime_get(1*HZ);
+		np->settle_time	= jiffies + HZ;
 		ncr_init (np, 0, bootverbose ? "scsi mode change" : NULL, HS_RESET);
 		return 1;
 	}
@@ -6923,7 +6923,7 @@ static struct lcb *ncr_setup_lcb (struct ncb *np, struct scsi_device *sdev)
 		for (i = 0 ; i < MAX_TAGS ; i++)
 			lp->cb_tags[i] = i;
 		lp->maxnxs = MAX_TAGS;
-		lp->tags_stime = ktime_get(3*HZ);
+		lp->tags_stime = jiffies + 3*HZ;
 		ncr_setup_tags (np, sdev);
 	}
 
diff --git a/drivers/scsi/sym53c8xx_defs.h b/drivers/scsi/sym53c8xx_defs.h
index 4c4ae7d471..139cd0e12e 100644
--- a/drivers/scsi/sym53c8xx_defs.h
+++ b/drivers/scsi/sym53c8xx_defs.h
@@ -280,19 +280,6 @@
 #define SCSI_NCR_MAX_LUN	(1)
 #endif
 
-/*
-**	These simple macros limit expression involving 
-**	kernel time values (jiffies) to some that have 
-**	chance not to be too much incorrect. :-)
-*/
-#define ktime_get(o)		(jiffies + (u_long) o)
-#define ktime_exp(b)		((long)(jiffies) - (long)(b) >= 0)
-#define ktime_dif(a, b)		((long)(a) - (long)(b))
-/* These ones are not used in this driver */
-#define ktime_add(a, o)		((a) + (u_long)(o))
-#define ktime_sub(a, o)		((a) - (u_long)(o))
-
-
 /*
  *  IO functions definition for big/little endian CPU support.
  *  For now, the NCR is only supported in little endian addressing mode,