linux-kernel - Re: [PATCH] spi: rockchip: Fix a resource that is put twice in rockchip_spi

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Date:   Sun, 29 May 2022 09:17:09 +0200
From:   Christophe JAILLET <christophe.jaillet@...adoo.fr>
To:     Mark Brown <broonie@...nel.org>, Heiko Stuebner <heiko@...ech.de>,
        addy ke <addy.ke@...k-chips.com>
Cc:     linux-kernel@...r.kernel.org, kernel-janitors@...r.kernel.org,
        Mark Brown <broonie@...aro.org>, linux-spi@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-rockchip@...ts.infradead.org
Subject: Re: [PATCH] spi: rockchip: Fix a resource that is put twice in
 rockchip_spi_remove()

Le 29/05/2022 à 09:07, Christophe JAILLET a écrit :
> spi_controller_put() is already called as part of
> spi_unregister_controller(). The latter is called automatically because
> the controller has been registered with the devm_ function.
> 
> Remove the duplicate call.
> 
> Fixes: 64e36824b32b ("spi/rockchip: add driver for Rockchip RK3xxx SoCs integrated SPI")
> Signed-off-by: Christophe JAILLET <christophe.jaillet@...adoo.fr>
> ---
>   drivers/spi/spi-rockchip.c | 2 --
>   1 file changed, 2 deletions(-)
> 
> diff --git a/drivers/spi/spi-rockchip.c b/drivers/spi/spi-rockchip.c
> index a08215eb9e14..70777731b20e 100644
> --- a/drivers/spi/spi-rockchip.c
> +++ b/drivers/spi/spi-rockchip.c
> @@ -963,8 +963,6 @@ static int rockchip_spi_remove(struct platform_device *pdev)
>   	if (ctlr->dma_rx)
>   		dma_release_channel(ctlr->dma_rx);
>   
> -	spi_controller_put(ctlr);
> -
>   	return 0;
>   }
>   

NAK.

There is a spi_controller_get() call a few lines above, so this 
additional spi_controller_put() is needed.

CJ