linux-kernel - Re: [PATCH 1/2] clk: sunxi: add predivider handling for factors clock

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Message-ID: <CAGb2v66gL6_pcovygQhkjnJSJU39h+iAsaEbfQza8eoRQ7s7uQ@mail.gmail.com>
Date:	Tue, 19 Apr 2016 22:16:37 +0800
From:	Chen-Yu Tsai <wens@...e.org>
To:	Philip Li <philip.li@...el.com>
Cc:	Vishnu Patekar <vishnupatekar0510@...il.com>,
	xiaolong.ye@...el.com, kbuild test robot <lkp@...el.com>,
	Chen-Yu Tsai <wens@...e.org>,
	Stephen Boyd <sboyd@...eaurora.org>,
	linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>,
	Maxime Ripard <maxime.ripard@...e-electrons.com>,
	linux-sunxi <linux-sunxi@...glegroups.com>, kbuild-all@...org,
	Emilio Lopez <emilio@...pez.com.ar>,
	linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 1/2] clk: sunxi: add predivider handling for factors clock

On Tue, Apr 19, 2016 at 6:22 PM, Philip Li <philip.li@...el.com> wrote:
> On Sun, Apr 17, 2016 at 11:53:47AM +0800, Vishnu Patekar wrote:
>> Both of these patches in series has to be applied at the same time.
>> I think this is the reason, it fails.

You should probably squash the second patch into the first.

ChenYu

> hi Xiaolong, would you help do a check whether we apply the patches in correct sequence for this case?
>
>
>> On 17 Apr 2016 09:26, "kbuild test robot" <lkp@...el.com> wrote:
>>
>> > Hi Vishnu,
>> >
>> > [auto build test ERROR on clk/clk-next]
>> > [also build test ERROR on v4.6-rc3 next-20160415]
>> > [if your patch is applied to the wrong git tree, please drop us a note to
>> > help improving the system]
>> >
>> > url:
>> > https://github.com/0day-ci/linux/commits/Vishnu-Patekar/sunxi-factors-clock-predivider-handling/20160417-025801
>> > base:   https://git.kernel.org/pub/scm/linux/kernel/git/clk/linux.git
>> > clk-next
>> > config: arm-sunxi_defconfig (attached as .config)
>> > reproduce:
>> >         wget
>> > https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/make.cross
>> > -O ~/bin/make.cross
>> >         chmod +x ~/bin/make.cross
>> >         # save the attached .config to linux build tree
>> >         make.cross ARCH=arm
>> >
>> > Note: the
>> > linux-review/Vishnu-Patekar/sunxi-factors-clock-predivider-handling/20160417-025801
>> > HEAD 19bb5fc952754381d9f4f9b2e57a1fa09f467359 builds fine.
>> >       It only hurts bisectibility.
>> >
>> > All errors (new ones prefixed by >>):
>> >
>> >    drivers/clk/sunxi/clk-sunxi.c: In function 'sun6i_get_ahb1_factors':
>> > >> drivers/clk/sunxi/clk-sunxi.c:310:9: error: 'struct factors_request'
>> > has no member named 'parent_index'
>> >      if (req->parent_index == SUN6I_AHB1_PARENT_PLL6) {
>> >             ^
>> >    drivers/clk/sunxi/clk-sunxi.c: In function 'sun6i_ahb1_recalc':
>> >    drivers/clk/sunxi/clk-sunxi.c:340:9: error: 'struct factors_request'
>> > has no member named 'parent_index'
>> >      if (req->parent_index == SUN6I_AHB1_PARENT_PLL6)
>> >             ^
>> >
>> > vim +310 drivers/clk/sunxi/clk-sunxi.c
>> >
>> > a78bb355 Chen-Yu Tsai 2016-01-25  304   if (req->parent_rate && req->rate
>> > > req->parent_rate)
>> > a78bb355 Chen-Yu Tsai 2016-01-25  305           req->rate =
>> > req->parent_rate;
>> > a78bb355 Chen-Yu Tsai 2016-01-25  306
>> > a78bb355 Chen-Yu Tsai 2016-01-25  307   div =
>> > DIV_ROUND_UP(req->parent_rate, req->rate);
>> > a78bb355 Chen-Yu Tsai 2016-01-25  308
>> > a78bb355 Chen-Yu Tsai 2016-01-25  309   /* calculate pre-divider if parent
>> > is pll6 */
>> > a78bb355 Chen-Yu Tsai 2016-01-25 @310   if (req->parent_index ==
>> > SUN6I_AHB1_PARENT_PLL6) {
>> > a78bb355 Chen-Yu Tsai 2016-01-25  311           if (div < 4)
>> > a78bb355 Chen-Yu Tsai 2016-01-25  312                   calcp = 0;
>> > a78bb355 Chen-Yu Tsai 2016-01-25  313           else if (div / 2 < 4)
>> >
>> > :::::: The code at line 310 was first introduced by commit
>> > :::::: a78bb35552a800949b2bf68f372d3d6ccabdd790 clk: sunxi: rewrite
>> > sun6i-a31-ahb1-clk using factors clk with custom recalc
>> >
>> > :::::: TO: Chen-Yu Tsai <wens@...e.org>
>> > :::::: CC: Maxime Ripard <maxime.ripard@...e-electrons.com>
>> >
>> > ---
>> > 0-DAY kernel test infrastructure                Open Source Technology
>> > Center
>> > https://lists.01.org/pipermail/kbuild-all                   Intel
>> > Corporation
>> >