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Subject: Re: [PATCH] parisc: led: fix reference leak on failed device
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To: Guangshuo Li <lgs201920130244@gmail.com>, linux-parisc@vger.kernel.org,
 linux-kernel@vger.kernel.org
References: <20260415170515.3605095-1-lgs201920130244@gmail.com>
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On 4/15/26 19:05, Guangshuo Li wrote:
> When platform_device_register() fails in startup_leds(), the embedded
> struct device in platform_leds has already been initialized by
> device_initialize(), but the failure path only reports the error and
> does not drop the device reference for the current platform device:
>=20
>    startup_leds()
>      -> platform_device_register(&platform_leds)
>         -> device_initialize(&platform_leds.dev)
>         -> setup_pdev_dma_masks(&platform_leds)
>         -> platform_device_add(&platform_leds)
>=20
> This leads to a reference leak when platform_device_register() fails.
> Fix this by calling platform_device_put() after reporting the error.
>=20
> The issue was identified by a static analysis tool I developed and
> confirmed by manual review.
>=20
> Fixes: 789e527adfc33 ("parisc: led: Rewrite LED/LCD driver to utilizize =
Linux LED subsystem")
> Cc: stable@vger.kernel.org
> Signed-off-by: Guangshuo Li <lgs201920130244@gmail.com>
> ---
>   drivers/parisc/led.c | 6 ++++--
>   1 file changed, 4 insertions(+), 2 deletions(-)

applied.
Thanks!
Helge