This is useful when we want to use regmap with character devices.
Signed-off-by: Dimitris Papastamos <d...@opensource.wolfsonmicro.com>
---
drivers/base/regmap/regmap-debugfs.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/drivers/base/regmap/regmap-debugfs.c
b/drivers/base/regmap/regmap-debugfs.c
index bb1ff17..c2fbf57 100644
--- a/drivers/base/regmap/regmap-debugfs.c
+++ b/drivers/base/regmap/regmap-debugfs.c
@@ -39,7 +39,10 @@ static ssize_t regmap_name_read_file(struct file *file,
if (!buf)
return -ENOMEM;
- ret = snprintf(buf, PAGE_SIZE, "%s\n", map->dev->driver->name);
+ if (map->dev->driver && map->dev->driver->name)
+ ret = snprintf(buf, PAGE_SIZE, "%s\n", map->dev->driver->name);
+ else
+ ret = snprintf(buf, PAGE_SIZE, "%s\n", dev_name(map->dev));
if (ret < 0) {
kfree(buf);
return ret;
--
1.7.11.2
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