diff options
Diffstat (limited to 'drivers/hwmon/occ/common.c')
| -rw-r--r-- | drivers/hwmon/occ/common.c | 11 |
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"); |