linux-kernel - Re: [PATCH] stmmac: dwmac-ipq806x: fix static checker warning

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Message-Id: <20150807.001232.883736987030332955.davem@davemloft.net>
Date:	Fri, 07 Aug 2015 00:12:32 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	mathieu@...eaurora.org
Cc:	peppe.cavallaro@...com, netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] stmmac: dwmac-ipq806x: fix static checker warning

From: Mathieu Olivari <mathieu@...eaurora.org>
Date: Tue,  4 Aug 2015 17:25:02 -0700

> The patch b1c17215d718: "stmmac: add ipq806x glue layer", leads to the
> following static checker warning:
> 
> .../stmmac/dwmac-ipq806x.c:314 ipq806x_gmac_probe()
> warn: double left shift '1 << (1 << gmac->id)'
> 
> The NSS_COMMON_CLK_SRC_CTRL_OFFSET macro is used once as an offset, and
> once as a mask, which is a bug indeed. We'll fix it by defining the
> offset as the real offset value and computing the mask from it when
> required.
> 
> Tested on IPQ806x ref designs AP148 & DB149.
> 
> Reported-by: Dan Carpenter <dan.carpenter@...cle.com>
> Signed-off-by: Mathieu Olivari <mathieu@...eaurora.org>

Applied.
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