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Re: linux-4.11-rc1/drivers/gpu/drm/exynos/exynos5433_drm_decon.c:681: suspicious mask ?

From Andrzej Hajda <a.hajda@samsung.com>
Newsgroups linux.kernel
Subject Re: linux-4.11-rc1/drivers/gpu/drm/exynos/exynos5433_drm_decon.c:681: suspicious mask ?
Date 2017-03-08 10:10 +0100
Message-ID <tiFLA-4fF-15@gated-at.bofh.it> (permalink)
References <tiFLA-4fF-17@gated-at.bofh.it> <tiFLA-4fF-19@gated-at.bofh.it>
Organization linux.* mail to news gateway

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Hi David, Inki,

Thanks for reporting.

On 06.03.2017 11:05, David Binderman wrote:
> Hello there,
>
> linux-4.11-rc1/drivers/gpu/drm/exynos/exynos5433_drm_decon.c:681]: (warning) Result of operator '|' is always true if one operand is non-zero. Did you intend to use '&'?
>
> Source code is
>
>     if (ctx->out_type | I80_HW_TRG) {
>
> Also in the same file:
>
> [drivers/gpu/drm/exynos/exynos5433_drm_decon.c:131]: (style) Same expression on both sides of '|'.
>
> Source code is
>
>        writel(TRIGCON_TE_AUTO_MASK | TRIGCON_SWTRIGEN
>                | TRIGCON_TE_AUTO_MASK | TRIGCON_SWTRIGEN,

This typo was already reported by:
- Ilia Mirkin, I have uploaded 2nd fixed version of the patch,
apparently the 1st version has been merged [1],
- Dan Carpenter, he posted also the fix[2],
- and now David.

I guess at the moment the best solution is to get Dan's patch.

[1]: https://patchwork.kernel.org/patch/9493177/
[2]: https://patchwork.kernel.org/patch/9571375/

Regards
Andrzej

>
> Regards
>
> David Binderman
> _______________________________________________
> dri-devel mailing list
> dri-devel@lists.freedesktop.org
> https://lists.freedesktop.org/mailman/listinfo/dri-devel

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Re: linux-4.11-rc1/drivers/gpu/drm/exynos/exynos5433_drm_decon.c:681:  suspicious mask ? Andrzej Hajda <a.hajda@samsung.com> - 2017-03-08 10:10 +0100

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