1 files changed, 5 insertions, 2 deletions

diff --git a/drivers/base/regmap/regmap.c b/drivers/base/regmap/regmap.c
index 1cf427bc0d4a..3a785a4f4ff6 100644
--- a/drivers/base/regmap/regmap.c
+++ b/drivers/base/regmap/regmap.c
@@ -1408,7 +1408,7 @@ int _regmap_write(struct regmap *map, unsigned int reg,
         }
 
 #ifdef LOG_DEVICE
-        if (strcmp(dev_name(map->dev), LOG_DEVICE) == 0)
+        if (map->dev && strcmp(dev_name(map->dev), LOG_DEVICE) == 0)
                 dev_info(map->dev, "%x <= %x\n", reg, val);
 #endif
 
@@ -1659,6 +1659,9 @@ out:
         } else {
                 void *wval;
 
+                if (!val_count)
+                        return -EINVAL;
+
                 wval = kmemdup(val, val_count * val_bytes, GFP_KERNEL);
                 if (!wval) {
                         dev_err(map->dev, "Error in memory allocation\n");
@@ -2058,7 +2061,7 @@ static int _regmap_read(struct regmap *map, unsigned int reg,
         ret = map->reg_read(context, reg, val);
         if (ret == 0) {
 #ifdef LOG_DEVICE
-                if (strcmp(dev_name(map->dev), LOG_DEVICE) == 0)
+                if (map->dev && strcmp(dev_name(map->dev), LOG_DEVICE) == 0)
                         dev_info(map->dev, "%x => %x\n", reg, *val);
 #endif