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path: root/drivers/hwtracing/stm/heartbeat.c
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Diffstat (limited to 'drivers/hwtracing/stm/heartbeat.c')
-rw-r--r--drivers/hwtracing/stm/heartbeat.c14
1 files changed, 5 insertions, 9 deletions
diff --git a/drivers/hwtracing/stm/heartbeat.c b/drivers/hwtracing/stm/heartbeat.c
index 0133571b5..3da7b673a 100644
--- a/drivers/hwtracing/stm/heartbeat.c
+++ b/drivers/hwtracing/stm/heartbeat.c
@@ -26,7 +26,7 @@
static int nr_devs = 4;
static int interval_ms = 10;
-module_param(nr_devs, int, 0600);
+module_param(nr_devs, int, 0400);
module_param(interval_ms, int, 0600);
static struct stm_heartbeat {
@@ -35,8 +35,6 @@ static struct stm_heartbeat {
unsigned int active;
} stm_heartbeat[STM_HEARTBEAT_MAX];
-static unsigned int nr_instances;
-
static const char str[] = "heartbeat stm source driver is here to serve you";
static enum hrtimer_restart stm_heartbeat_hrtimer_handler(struct hrtimer *hr)
@@ -74,12 +72,12 @@ static void stm_heartbeat_unlink(struct stm_source_data *data)
static int stm_heartbeat_init(void)
{
- int i, ret = -ENOMEM, __nr_instances = ACCESS_ONCE(nr_devs);
+ int i, ret = -ENOMEM;
- if (__nr_instances < 0 || __nr_instances > STM_HEARTBEAT_MAX)
+ if (nr_devs < 0 || nr_devs > STM_HEARTBEAT_MAX)
return -EINVAL;
- for (i = 0; i < __nr_instances; i++) {
+ for (i = 0; i < nr_devs; i++) {
stm_heartbeat[i].data.name =
kasprintf(GFP_KERNEL, "heartbeat.%d", i);
if (!stm_heartbeat[i].data.name)
@@ -98,8 +96,6 @@ static int stm_heartbeat_init(void)
goto fail_free;
}
- nr_instances = __nr_instances;
-
return 0;
fail_unregister:
@@ -116,7 +112,7 @@ static void stm_heartbeat_exit(void)
{
int i;
- for (i = 0; i < nr_instances; i++) {
+ for (i = 0; i < nr_devs; i++) {
stm_source_unregister_device(&stm_heartbeat[i].data);
kfree(stm_heartbeat[i].data.name);
}