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Subject[PATCH v1 1/1] driver core: Return proper error code when dev_set_name() fails
Date
Whe device_add() tries to assign a device name with help of
dev_set_name() the error path explicitly uses -EINVAL, while
the function may return something different.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
---
drivers/base/core.c | 13 ++++++-------
1 file changed, 6 insertions(+), 7 deletions(-)

diff --git a/drivers/base/core.c b/drivers/base/core.c
index 3afb7710ccb5..1a1aecabd5ce 100644
--- a/drivers/base/core.c
+++ b/drivers/base/core.c
@@ -3528,18 +3528,17 @@ int device_add(struct device *dev)
* the name, and force the use of dev_name()
*/
if (dev->init_name) {
- dev_set_name(dev, "%s", dev->init_name);
+ error = dev_set_name(dev, "%s", dev->init_name);
dev->init_name = NULL;
}

+ if (dev_name(dev))
+ error = 0;
/* subsystems can specify simple device enumeration */
- if (!dev_name(dev) && dev->bus && dev->bus->dev_name)
- dev_set_name(dev, "%s%u", dev->bus->dev_name, dev->id);
-
- if (!dev_name(dev)) {
- error = -EINVAL;
+ else if (dev->bus && dev->bus->dev_name)
+ error = dev_set_name(dev, "%s%u", dev->bus->dev_name, dev->id);
+ if (error)
goto name_error;
- }

pr_debug("device: '%s': %s\n", dev_name(dev), __func__);

--
2.40.0.1.gaa8946217a0b
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