commit de0b632ba05bc88949e67d33d1c313fcf922ae2e
author Josh Boyer <jwboyer@gmail.com> Fri Feb 05 03:52:16 2010 +0000
committer Benjamin Herrenschmidt <benh@kernel.crashing.org> Tue Mar 09 11:55:27 2010 +1100
tree 9406ef8826300295b73b266d2fa754a3b0f21135
parent f09b7b2a1115d3afe02c66156746287f6c63bba0

powerpc: Fix G5 thermal shutdown

This changes the thresholds for the liquid cooled G5 thermal
shutdown mechanism to prevent an errant shutdown with some
models.

Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

drivers/macintosh/therm_pm72.c

diff --git a/drivers/macintosh/therm_pm72.c b/drivers/macintosh/therm_pm72.c
index 5738d8b..921373e 100644
--- a/drivers/macintosh/therm_pm72.c
+++ b/drivers/macintosh/therm_pm72.c
@@ -948,10 +948,16 @@
 		printk(KERN_WARNING "Warning ! Temperature way above maximum (%d) !\n",
 		       temp_combi >> 16);
 		state0->overtemp += CPU_MAX_OVERTEMP / 4;
-	} else if (temp_combi > (state0->mpu.tmax << 16))
+	} else if (temp_combi > (state0->mpu.tmax << 16)) {
 		state0->overtemp++;
-	else
+		printk(KERN_WARNING "Temperature %d above max %d. overtemp %d\n",
+		       temp_combi >> 16, state0->mpu.tmax, state0->overtemp);
+	} else {
+		if (state0->overtemp)
+			printk(KERN_WARNING "Temperature back down to %d\n",
+			       temp_combi >> 16);
 		state0->overtemp = 0;
+	}
 	if (state0->overtemp >= CPU_MAX_OVERTEMP)
 		critical_state = 1;
 	if (state0->overtemp > 0) {
@@ -1023,10 +1029,16 @@
 		       " (%d) !\n",
 		       state->index, temp >> 16);
 		state->overtemp += CPU_MAX_OVERTEMP / 4;
-	} else if (temp > (state->mpu.tmax << 16))
+	} else if (temp > (state->mpu.tmax << 16)) {
 		state->overtemp++;
-	else
+		printk(KERN_WARNING "CPU %d temperature %d above max %d. overtemp %d\n",
+		       state->index, temp >> 16, state->mpu.tmax, state->overtemp);
+	} else {
+		if (state->overtemp)
+			printk(KERN_WARNING "CPU %d temperature back down to %d\n",
+			       state->index, temp >> 16);
 		state->overtemp = 0;
+	}
 	if (state->overtemp >= CPU_MAX_OVERTEMP)
 		critical_state = 1;
 	if (state->overtemp > 0) {
@@ -1085,10 +1097,16 @@
 		       " (%d) !\n",
 		       state->index, temp >> 16);
 		state->overtemp = CPU_MAX_OVERTEMP / 4;
-	} else if (temp > (state->mpu.tmax << 16))
+	} else if (temp > (state->mpu.tmax << 16)) {
 		state->overtemp++;
-	else
+		printk(KERN_WARNING "CPU %d temperature %d above max %d. overtemp %d\n",
+		       state->index, temp >> 16, state->mpu.tmax, state->overtemp);
+	} else {
+		if (state->overtemp)
+			printk(KERN_WARNING "CPU %d temperature back down to %d\n",
+			       state->index, temp >> 16);
 		state->overtemp = 0;
+	}
 	if (state->overtemp >= CPU_MAX_OVERTEMP)
 		critical_state = 1;
 	if (state->overtemp > 0) {

drivers/macintosh/therm_pm72.h

diff --git a/drivers/macintosh/therm_pm72.h b/drivers/macintosh/therm_pm72.h
index 393cc9d..df3680e 100644
--- a/drivers/macintosh/therm_pm72.h
+++ b/drivers/macintosh/therm_pm72.h
@@ -269,7 +269,7 @@
 #define CPU_TEMP_HISTORY_SIZE		2
 #define CPU_POWER_HISTORY_SIZE		10
 #define CPU_PID_INTERVAL		1
-#define CPU_MAX_OVERTEMP		30
+#define CPU_MAX_OVERTEMP		90
 
 #define CPUA_PUMP_RPM_INDEX		7
 #define CPUB_PUMP_RPM_INDEX		8