summaryrefslogtreecommitdiff
path: root/drivers/hwmon/occ/common.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/hwmon/occ/common.c')
-rw-r--r--drivers/hwmon/occ/common.c11
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/hwmon/occ/common.c b/drivers/hwmon/occ/common.c
index 4679acb4918e..13a6290c8d25 100644
--- a/drivers/hwmon/occ/common.c
+++ b/drivers/hwmon/occ/common.c
@@ -2,11 +2,13 @@
// Copyright IBM Corp 2019
#include <linux/device.h>
+#include <linux/export.h>
#include <linux/hwmon.h>
#include <linux/hwmon-sysfs.h>
#include <linux/jiffies.h>
#include <linux/kernel.h>
#include <linux/math64.h>
+#include <linux/module.h>
#include <linux/mutex.h>
#include <linux/sysfs.h>
#include <asm/unaligned.h>
@@ -139,6 +141,7 @@ static int occ_poll(struct occ *occ)
/* mutex should already be locked if necessary */
rc = occ->send_cmd(occ, cmd);
if (rc) {
+ occ->last_error = rc;
if (occ->error_count++ > OCC_ERROR_COUNT_THRESHOLD)
occ->error = rc;
@@ -147,6 +150,7 @@ static int occ_poll(struct occ *occ)
/* clear error since communication was successful */
occ->error_count = 0;
+ occ->last_error = 0;
occ->error = 0;
/* check for safe state */
@@ -208,6 +212,8 @@ int occ_update_response(struct occ *occ)
if (time_after(jiffies, occ->last_update + OCC_UPDATE_FREQUENCY)) {
rc = occ_poll(occ);
occ->last_update = jiffies;
+ } else {
+ rc = occ->last_error;
}
mutex_unlock(&occ->lock);
@@ -1099,3 +1105,8 @@ int occ_setup(struct occ *occ, const char *name)
return rc;
}
+EXPORT_SYMBOL_GPL(occ_setup);
+
+MODULE_AUTHOR("Eddie James <eajames@linux.ibm.com>");
+MODULE_DESCRIPTION("Common OCC hwmon code");
+MODULE_LICENSE("GPL");