linux-kernel - Re: [PATCH] irqchip/gic-v3: fix OF_BAD

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Message-Id: <161779861852.1095473.3028175861742245454.b4-ty@kernel.org>
Date:   Wed,  7 Apr 2021 13:31:54 +0100
From:   Marc Zyngier <maz@...nel.org>
To:     Nick Desaulniers <ndesaulniers@...gle.com>,
        Nathan Chancellor <nathan@...nel.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Arnd Bergmann <arnd@...nel.org>
Cc:     Arnd Bergmann <arnd@...db.de>, linux-kernel@...r.kernel.org,
        clang-built-linux@...glegroups.com
Subject: Re: [PATCH] irqchip/gic-v3: fix OF_BAD_ADDR error handling

On Tue, 23 Mar 2021 14:18:35 +0100, Arnd Bergmann wrote:
> When building with extra warnings enabled, clang points out a
> mistake in the error handling:
> 
> drivers/irqchip/irq-gic-v3-mbi.c:306:21: error: result of comparison of constant 18446744073709551615 with expression of type 'phys_addr_t' (aka 'unsigned int') is always false [-Werror,-Wtautological-constant-out-of-range-compare]
>                 if (mbi_phys_base == OF_BAD_ADDR) {
> 
> Truncate the constant to the same type as the variable it gets compared
> to, to shut make the check work and void the warning.

Applied to irq/irqchip-next, thanks!

[1/1] irqchip/gic-v3: fix OF_BAD_ADDR error handling
      commit: 8e13d96670a4c050d4883e6743a9e9858e5cfe10

Cheers,

	M.
-- 
Without deviation from the norm, progress is not possible.