linux-kernel - Re: [PATCH V5] phy: freescale: fsl-samsung-hdmi: fix build error in fsl_samsung_hdmi_phy_configure_pll_lock

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Message-ID: <Z6sqzpqvsumX+VOP@vaman>
Date: Tue, 11 Feb 2025 16:17:42 +0530
From: Vinod Koul <vkoul@...nel.org>
To: Pei Xiao <xiaopei01@...inos.cn>
Cc: xiaopeitux@...mail.com, linux-kernel@...r.kernel.org
Subject: Re: [PATCH V5] phy: freescale: fsl-samsung-hdmi: fix build error in
 fsl_samsung_hdmi_phy_configure_pll_lock_det

On 11-02-25, 10:10, Pei Xiao wrote:
> 
> 在 2025/2/11 01:02, Vinod Koul 写道:
> > On 17-01-25, 10:15, Pei Xiao wrote:
> >> 在 2025/1/17 09:59, Adam Ford 写道:
> >>> On Mon, Jan 13, 2025 at 2:41 AM <xiaopeitux@...mail.com> wrote:
> >>>> From: Pei Xiao <xiaopei01@...inos.cn>
> >>>>
> >>>> FIELD_PREP() checks that a value fits into the available bitfield,
> >>>> but the index div equals to 4,is out of range.
> >>>>
> >>>> which gcc complains about:
> >>>> In function ‘fsl_samsung_hdmi_phy_configure_pll_lock_det’,
> >>>> inlined from ‘fsl_samsung_hdmi_phy_configure’ at
> >>>> drivers/phy/freescale/phy-fsl-samsung-hdmi.c :470:2:
> >>>> ././include/linux/compiler_types.h:542:38: error: call to ‘__compiletime_assert_538’
> >>>> declared with attribute error: FIELD_PREP: value too large for the field
> >>>>   542 |  _compiletime_assert(condition, msg, __compiletime_assert_,
> >>>> __COUNTER__)
> >>>>       |                                      ^
> >>>> ././include/linux/compiler_types.h:523:4: note: in definition of
> >>>> macro ‘__compiletime_assert’ 523 |    prefix ## suffix();
> >>>>       |    ^~~~~~
> >>>> ././include/linux/compiler_types.h:542:2: note: in expansion of macro
> >>>> ‘_compiletime_assert’
> >>>>   542 |  _compiletime_assert(condition, msg, __compiletime_assert_,
> >>>>  __COUNTER__)
> >>>>
> >>>> REG12_CK_DIV_MASK only two bit, limit div to range 0~3,
> >>>> so build error will fix.
> >>>>
> >>> LGTM.
> >>>
> >>> Reviewed-by:  Adam Ford <aford173@...il.com>
> >> loop Vkoul for email address was written incorrectly.
> > Thanks for looping in!
> >
> > Change looks good to me. Can you please revise the patch title. A patch
> > title should describe the change we are making. Fix build error is not
> > an apt title
> 
> there so many  "Fix build error" : https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/log/?qt=grep&q=fix+build+error
> 
> what we should revise?
> 
> Like:*phy: freescale: fsl-samsung-hdmi: Limit PLL lock detection clock divider to valid range*

That sounds better

-- 
~Vinod