From be324797d9b2a10f767e89dfbd880c735249bef9 Mon Sep 17 00:00:00 2001
From: Akinobu Mita <akinobu.mita@gmail.com>
Date: Wed, 23 May 2007 13:58:06 -0700
Subject: i2o: fix notifiers when max_drivers is configured
Maximum number of I2O drivers which could be registered is configurable by
max_drivers module parameter.
But the module parameter is ignored and default value (I2O_MAX_DRIVERS = 8)
is used in the loops to notify all registered drivers.
Cc: Markus Lidel <Markus.Lidel@shadowconnect.com>
Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---
drivers/message/i2o/driver.c | 14 +++++++-------
1 file changed, 7 insertions(+), 7 deletions(-)
diff --git a/drivers/message/i2o/driver.c b/drivers/message/i2o/driver.c
index d330e4eb86ac..a3ee1796af0c 100644
--- a/drivers/message/i2o/driver.c
+++ b/drivers/message/i2o/driver.c
@@ -20,6 +20,7 @@
#include <linux/workqueue.h>
#include <linux/string.h>
#include <linux/slab.h>
+#include <linux/log2.h>
#include "core.h"
#define OSM_NAME "i2o"
@@ -260,7 +261,7 @@ void i2o_driver_notify_controller_add_all(struct i2o_controller *c)
int i;
struct i2o_driver *drv;
- for (i = 0; i < I2O_MAX_DRIVERS; i++) {
+ for (i = 0; i < i2o_max_drivers; i++) {
drv = i2o_drivers[i];
if (drv)
@@ -280,7 +281,7 @@ void i2o_driver_notify_controller_remove_all(struct i2o_controller *c)
int i;
struct i2o_driver *drv;
- for (i = 0; i < I2O_MAX_DRIVERS; i++) {
+ for (i = 0; i < i2o_max_drivers; i++) {
drv = i2o_drivers[i];
if (drv)
@@ -299,7 +300,7 @@ void i2o_driver_notify_device_add_all(struct i2o_device *i2o_dev)
int i;
struct i2o_driver *drv;
- for (i = 0; i < I2O_MAX_DRIVERS; i++) {
+ for (i = 0; i < i2o_max_drivers; i++) {
drv = i2o_drivers[i];
if (drv)
@@ -318,7 +319,7 @@ void i2o_driver_notify_device_remove_all(struct i2o_device *i2o_dev)
int i;
struct i2o_driver *drv;
- for (i = 0; i < I2O_MAX_DRIVERS; i++) {
+ for (i = 0; i < i2o_max_drivers; i++) {
drv = i2o_drivers[i];
if (drv)
@@ -340,8 +341,7 @@ int __init i2o_driver_init(void)
spin_lock_init(&i2o_drivers_lock);
if ((i2o_max_drivers < 2) || (i2o_max_drivers > 64) ||
- ((i2o_max_drivers ^ (i2o_max_drivers - 1)) !=
- (2 * i2o_max_drivers - 1))) {
+ !is_power_of_2(i2o_max_drivers)) {
osm_warn("max_drivers set to %d, but must be >=2 and <= 64 and "
"a power of 2\n", i2o_max_drivers);
i2o_max_drivers = I2O_MAX_DRIVERS;
@@ -349,7 +349,7 @@ int __init i2o_driver_init(void)
osm_info("max drivers = %d\n", i2o_max_drivers);
i2o_drivers =
- kzalloc(i2o_max_drivers * sizeof(*i2o_drivers), GFP_KERNEL);
+ kcalloc(i2o_max_drivers, sizeof(*i2o_drivers), GFP_KERNEL);
if (!i2o_drivers)
return -ENOMEM;
--
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