linux-kernel - Re: [PATCH] dma: ste_dma40: fix unneeded variable warning

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Message-ID: <20190722142445.GV12733@vkoul-mobl.Dlink>
Date:   Mon, 22 Jul 2019 19:54:45 +0530
From:   Vinod Koul <vkoul@...nel.org>
To:     Arnd Bergmann <arnd@...db.de>
Cc:     Linus Walleij <linus.walleij@...aro.org>,
        linux-arm-kernel@...ts.infradead.org, dmaengine@...r.kernel.org,
        linux-kernel@...r.kernel.org, clang-built-linux@...glegroups.com
Subject: Re: [PATCH] dma: ste_dma40: fix unneeded variable warning

On 12-07-19, 11:13, Arnd Bergmann wrote:
> clang-9 points out that there are two variables that depending on the
> configuration may only be used in an ARRAY_SIZE() expression but not
> referenced:
> 
> drivers/dma/ste_dma40.c:145:12: error: variable 'd40_backup_regs' is not needed and will not be emitted [-Werror,-Wunneeded-internal-declaration]
> static u32 d40_backup_regs[] = {
>            ^
> drivers/dma/ste_dma40.c:214:12: error: variable 'd40_backup_regs_chan' is not needed and will not be emitted [-Werror,-Wunneeded-internal-declaration]
> static u32 d40_backup_regs_chan[] = {
> 
> Mark these __maybe_unused to shut up the warning.

Applied, thanks

-- 
~Vinod