Messages in this thread Patch in this message | ![/](/images/icornerl.gif) | | Date | Tue, 28 Dec 2021 15:53:55 +0100 | From | Matthias Brugger <> | Subject | Re: [PATCH] drm/mediatek: Fix unused-but-set variable warning |
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On 28/12/2021 10:25, Miles Chen wrote: > Fix unused-but-set variable warning: > drivers/gpu/drm/mediatek/mtk_cec.c:85:6: warning: variable 'tmp' set but not used [-Wunused-but-set-variable] >
Actually we ignore the value passed to mtk_cec_mask. In case of mtk_cec_mask(cec, CEC_CKGEN, 0 | CEC_32K_PDN, PDN | CEC_32K_PDN);
We are not setting CEC_32K_PDN. I wonder which side effect will it have to set that bit.
Anyway, if it's the right thing to do, we should add:
Fixes: 8f83f26891e1 ("drm/mediatek: Add HDMI support")
Regards, Matthias
> Signed-off-by: Miles Chen <miles.chen@mediatek.com> > --- > drivers/gpu/drm/mediatek/mtk_cec.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/drivers/gpu/drm/mediatek/mtk_cec.c b/drivers/gpu/drm/mediatek/mtk_cec.c > index e9cef5c0c8f7..cdfa648910b2 100644 > --- a/drivers/gpu/drm/mediatek/mtk_cec.c > +++ b/drivers/gpu/drm/mediatek/mtk_cec.c > @@ -85,7 +85,7 @@ static void mtk_cec_mask(struct mtk_cec *cec, unsigned int offset, > u32 tmp = readl(cec->regs + offset) & ~mask; > > tmp |= val & mask; > - writel(val, cec->regs + offset); > + writel(tmp, cec->regs + offset); > } > > void mtk_cec_set_hpd_event(struct device *dev, >
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