lightnvm: propagate device_add() error code
device_add() may fail, and all callers are supposed to check the
return value, but one new user in lightnvm doesn't:
drivers/lightnvm/sysfs.c: In function 'nvm_sysfs_register_dev':
drivers/lightnvm/sysfs.c:184:2: error: ignoring return value of 'device_add',
declared with attribute warn_unused_result [-Werror=unused-result]
This changes the caller to propagate any error codes, which avoids
the warning.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Fixes: 38c9e260b9f9 ("lightnvm: expose device geometry through sysfs")
Signed-off-by: Matias Bjørling <m@bjorling.me>
Signed-off-by: Jens Axboe <axboe@fb.com>
diff --git a/drivers/lightnvm/sysfs.c b/drivers/lightnvm/sysfs.c
index 72ad089..0338c27a 100644
--- a/drivers/lightnvm/sysfs.c
+++ b/drivers/lightnvm/sysfs.c
@@ -174,6 +174,8 @@
int nvm_sysfs_register_dev(struct nvm_dev *dev)
{
+ int ret;
+
if (!dev->parent_dev)
return 0;
@@ -181,11 +183,12 @@
dev_set_name(&dev->dev, "%s", dev->name);
dev->dev.type = &nvm_type;
device_initialize(&dev->dev);
- device_add(&dev->dev);
+ ret = device_add(&dev->dev);
- blk_mq_register_dev(&dev->dev, dev->q);
+ if (!ret)
+ blk_mq_register_dev(&dev->dev, dev->q);
- return 0;
+ return ret;
}
void nvm_sysfs_unregister_dev(struct nvm_dev *dev)