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The for_each_child_of_node() macro automatically decrements the child
refcount at the end of every iteration. On early exits, of_node_put()
must be used to manually decrement the refcount and avoid memory leaks.
The scoped version of the macro accounts for such early breaks, fixing
the early exits without the need for explicit calls to of_node_put().
Reported-by: kernel test robot <lkp@intel.com>
Reported-by: Julia Lawall <julia.lawall@inria.fr>
Closes: https://lore.kernel.org/r/202406172314.2vVgelaS-lkp@intel.com/
Fixes: b72755f5b577 ("backlight: Add new lm3509 backlight driver")
Signed-off-by: Javier Carrasco <javier.carrasco.cruz@gmail.com>
Link: https://lore.kernel.org/r/20240624-lm3509_bl_scoped-v1-1-ceba9df38f23@gmail.com
Signed-off-by: Lee Jones <lee@kernel.org>
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These drivers don't use the driver_data member of struct i2c_device_id,
so don't explicitly initialize this member.
This prepares putting driver_data in an anonymous union which requires
either no initialization or named designators. But it's also a nice
cleanup on its own.
While add it, also remove commas after the sentinel entries.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@baylibre.com>
Link: https://lore.kernel.org/r/20240619193558.2543645-2-u.kleine-koenig@baylibre.com
Signed-off-by: Lee Jones <lee@kernel.org>
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The devm_backlight_device_register() doesn't return NULL, it returns
error pointers. Update the error checking to match.
Fixes: b72755f5b577 ("backlight: Add new lm3509 backlight driver")
Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
Reviewed-by: Daniel Thompson <daniel.thompson@linaro.org>
Link: https://lore.kernel.org/r/187b5bc5-a010-46c2-8ead-980df9efae79@moroto.mountain
Signed-off-by: Lee Jones <lee@kernel.org>
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This is a general driver for LM3509 backlight chip of TI.
LM3509 is High Efficiency Boost for White LEDs and/or OLED Displays with
Dual Current Sinks. This driver supports OLED/White LED select, brightness
control and sub/main control.
The datasheet can be found at http://www.ti.com/product/lm3509.
Signed-off-by: Patrick Gansterer <paroga@paroga.com>
Reviewed-by: Daniel Thompson <daniel.thompson@linaro.org>
Link: https://lore.kernel.org/r/20240526105136.721529-3-paroga@paroga.com
Signed-off-by: Lee Jones <lee@kernel.org>
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