From: Arnd Bergmann <arnd@kernel.org>
To: Santosh Shilimkar <ssantosh@kernel.org>,
Nathan Chancellor <nathan@kernel.org>,
Nick Desaulniers <ndesaulniers@google.com>,
Arnd Bergmann <arnd@kernel.org>
Cc: Arnd Bergmann <arnd@arndb.de>,
linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
Mathieu Poirier <mathieu.poirier@linaro.org>,
Jim Quinlan <james.quinlan@broadcom.com>,
Maxime Ripard <maxime@cerno.tech>,
soc@kernel.org, Robin Murphy <robin.murphy@arm.com>,
clang-built-linux@googlegroups.com,
Russell King <linux@armlinux.org.uk>
Subject: Re: [PATCH] ARM: keystone: fix integer overflow warning
Date: Thu, 1 Apr 2021 12:23:26 +0200 [thread overview]
Message-ID: <161727243810.583633.10194693313914787410.b4-ty@arndb.de> (raw)
In-Reply-To: <20210323131814.2751750-1-arnd@kernel.org>
From: Arnd Bergmann <arnd@arndb.de>
On Tue, 23 Mar 2021 14:18:05 +0100, Arnd Bergmann wrote:
> clang warns about an impossible condition when building with 32-bit
> phys_addr_t:
>
> arch/arm/mach-keystone/keystone.c:79:16: error: result of comparison of constant 51539607551 with expression of type 'phys_addr_t' (aka 'unsigned int') is always false [-Werror,-Wtautological-constant-out-of-range-compare]
> mem_end > KEYSTONE_HIGH_PHYS_END) {
> ~~~~~~~ ^ ~~~~~~~~~~~~~~~~~~~~~~
> arch/arm/mach-keystone/keystone.c:78:16: error: result of comparison of constant 34359738368 with expression of type 'phys_addr_t' (aka 'unsigned int') is always true [-Werror,-Wtautological-constant-out-of-range-compare]
> if (mem_start < KEYSTONE_HIGH_PHYS_START ||
> ~~~~~~~~~ ^ ~~~~~~~~~~~~~~~~~~~~~~~~
>
> [...]
Applied to arm/fixes
[1/1] ARM: keystone: fix integer overflow warning
commit: 04e18e1cc319f453a6d752d4553bb3f29fde5f76
Arnd
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prev parent reply other threads:[~2021-04-01 10:25 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-23 13:18 [PATCH] ARM: keystone: fix integer overflow warning Arnd Bergmann
2021-03-23 17:56 ` Santosh Shilimkar
2021-03-23 18:24 ` Nathan Chancellor
2021-04-01 10:23 ` Arnd Bergmann [this message]
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