Re: PATCH[[vme/bridges/vme_ca91cx42.c:1382: Bad if test Bug Fix]ââ

From: Dan Carpenter
Date: Mon Jun 16 2014 - 05:56:39 EST


On Mon, Jun 16, 2014 at 10:47:25AM +0100, Martyn Welch wrote:
> Nick,
>
> Sorry for the delay in responding.
>
> I'm staring at the manual for the ca91c142 and the relevant bits in
> the VSIx_CTL registers definitely need to be set to 0 for A16,
> likewise with the LM_CTL register. The pattern (3<<16) would enable
> one of the "reserved" address spaces.
>

Nick emailed me privately that this was a static checker warning. These
warnings are often false positives... But I'm worried about the test:

if ((ctl & CA91CX42_VSI_CTL_VAS_M) == CA91CX42_VSI_CTL_VAS_A16)
*aspace = VME_A16;

That could be true when we didn't intend it.

regards,
dan carpenter

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