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Date:   Fri, 18 Nov 2022 10:15:21 +0200
From:   Tony Lindgren <tony@atomide.com>
To:     Maxim Korotkov <korotkov.maxim.s@gmail.com>
Cc:     Haojian Zhuang <haojian.zhuang@linaro.org>,
        Linus Walleij <linus.walleij@linaro.org>,
        "Manjunathappa, Prakash" <prakash.pm@ti.com>,
        linux-arm-kernel@lists.infradead.org, linux-omap@vger.kernel.org,
        linux-gpio@vger.kernel.org, linux-kernel@vger.kernel.org,
        lvc-project@linuxtesting.org
Subject: Re: [PATCH] pinctrl: single: Fix potential division by zero
Message-ID: <Y3c/GSZEW60ZgSkM@atomide.com>
References: <20221117123034.27383-1-korotkov.maxim.s@gmail.com>
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* Maxim Korotkov <korotkov.maxim.s@gmail.com> [221117 12:22]:
> There is a possibility of dividing by zero due to the pcs->bits_per_pin
> if pcs->fmask() also has a value of zero and called fls
> from asm-generic/bitops/builtin-fls.h or arch/x86/include/asm/bitops.h.
> The function pcs_probe() has the branch that assigned to fmask 0 before
> pcs_allocate_pin_table() was called

Reviewed-by: Tony Lindgren <tony@atomide.com>