linux-kernel - Re: [PATCH 03/15] ARM: exynos: fix a leaked reference by addingmissing of_node

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Date:   Fri, 1 Mar 2019 10:14:19 +0100
From:   Krzysztof Kozlowski <krzk@...nel.org>
To:     Wen Yang <wen.yang99@....com.cn>
Cc:     liviu.dudau@....com, sudeep.holla@....com,
        lorenzo.pieralisi@....com, linux@...linux.org.uk,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        kgene@...nel.org,
        "linux-samsung-soc@...r.kernel.org" 
        <linux-samsung-soc@...r.kernel.org>, michal.simek@...inx.com,
        afaerber@...e.de, manivannan.sadhasivam@...aro.org,
        dinguyen@...nel.org, heiko@...ech.de,
        linux-rockchip@...ts.infradead.org, f.fainelli@...il.com,
        rjui@...adcom.com, sbranden@...adcom.com,
        bcm-kernel-feedback-list@...adcom.com, linus.walleij@...aro.org,
        avifishman70@...il.com, tmaimon77@...il.com, venture@...gle.com,
        yuenn@...gle.com, brendanhiggins@...gle.com,
        openbmc@...ts.ozlabs.org, xuwei5@...ilicon.com,
        maxime.ripard@...tlin.com, wens@...e.org, catalin.marinas@....com,
        will.deacon@....com, horms@...ge.net.au, magnus.damm@...il.com,
        linux-renesas-soc@...r.kernel.org, shawnguo@...nel.org,
        s.hauer@...gutronix.de, kernel@...gutronix.de,
        fabio.estevam@....com, linux-imx@....com, wang.yi59@....com.cn
Subject: Re: [PATCH 03/15] ARM: exynos: fix a leaked reference by
 addingmissing of_node_put

On Fri, 1 Mar 2019 at 09:57, Wen Yang <wen.yang99@....com.cn> wrote:
>
> The call to of_get_next_child returns a node pointer with refcount
> incremented thus it must be explicitly decremented after the last
> usage.
>
> Detected by coccinelle with the following warnings:
> ./arch/arm/mach-exynos/firmware.c:201:2-8: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 193, but without a corresponding object release within this function.
> ./arch/arm/mach-exynos/firmware.c:204:1-7: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 193, but without a corresponding object release within this function.
> ./arch/arm/mach-exynos/suspend.c:642:2-8: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 634, but without a corresponding object release within this function.

Thanks, looks good. I'll take it however after merge window.

There are no dependencies between patches therefore you could limit
the amount of people you CC. You put specific "Cc" fields in patch but
you did not use them and sent it to 40 addresses. The CC in the patch
has exactly this purpose - do not send everything to everyone...

Best regards,
Krzysztof