HID: i2c-hid: Fix "(null)" output when reading report descriptor fails

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When i2c-hid fails to read the HID report descriptor during device
initialization, the error message prints as:

  hid (null): reading report descriptor failed

The HID device name is set in hid_add_device() after calling
hdev->ll_driver->parse(), so when i2c_hid_parse() fails and calls
hid_err(), the device name has not been set yet, resulting in "(null)"
output.

Use dev_err(&client->dev, ...) instead of hid_err(hid, ...) because
the I2C client device is fully initialized with a proper name, providing
meaningful error messages for debugging.

Before: hid (null): reading report descriptor failed
After:  i2c_hid i2c-TPD0001:00: reading report descriptor failed

Fixes: 4a200c3b9a ("HID: i2c-hid: introduce HID over i2c specification implementation")

Signed-off-by: Ai Chao <aichao@kylinos.cn>
Reviewed-by: Mario Limonciello (AMD) <superm1@kernel.org>
Signed-off-by: Jiri Kosina <jkosina@suse.com>

...

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Ai Chao 2026-07-16 19:29:32 +08:00 • committed by Jiri Kosina

parent f70a82e20d

commit 8da0f0951d

1 changed files with 1 additions and 1 deletions

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drivers/hid/i2c-hid/i2c-hid-core.c

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