linux-kernel - Re: [PATCH v5 2/3] mmc: host: sdhci: Implement the request

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Date:   Mon, 13 Apr 2020 14:52:45 +0800
From:   Baolin Wang <baolin.wang7@...il.com>
To:     kbuild test robot <lkp@...el.com>
Cc:     kbuild-all@...ts.01.org, Ulf Hansson <ulf.hansson@...aro.org>,
        Adrian Hunter <adrian.hunter@...el.com>,
        Arnd Bergmann <arnd@...db.de>,
        Orson Zhai <orsonzhai@...il.com>,
        Chunyan Zhang <zhang.lyra@...il.com>,
        linux-mmc <linux-mmc@...r.kernel.org>,
        LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v5 2/3] mmc: host: sdhci: Implement the request_atomic() API

Hi,

On Mon, Apr 13, 2020 at 1:42 PM kbuild test robot <lkp@...el.com> wrote:
>
> Hi Baolin,
>
> I love your patch! Yet something to improve:
>
> [auto build test ERROR on linus/master]
> [also build test ERROR on v5.7-rc1 next-20200412]
> [cannot apply to arm-soc/for-next]
> [if your patch is applied to the wrong git tree, please drop us a note to help
> improve the system. BTW, we also suggest to use '--base' option to specify the
> base tree in git format-patch, please see https://stackoverflow.com/a/37406982]
>
> url:    https://github.com/0day-ci/linux/commits/Baolin-Wang/Introduce-the-request_atomic-for-the-host/20200413-105346
> base:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 8f3d9f354286745c751374f5f1fcafee6b3f3136
> config: x86_64-randconfig-s2-20200413 (attached as .config)
> compiler: gcc-5 (Ubuntu 5.5.0-12ubuntu1) 5.5.0 20171010
> reproduce:
>         # save the attached .config to linux build tree
>         make ARCH=x86_64
>
> If you fix the issue, kindly add following tag as appropriate
> Reported-by: kbuild test robot <lkp@...el.com>

This patch set is based on Adrian's patch set. Thanks.
https://www.spinics.net/lists/linux-mmc/msg58529.html

>
> All error/warnings (new ones prefixed by >>):
>
>    In file included from include/linux/build_bug.h:5:0,
>                     from include/linux/bitfield.h:10,
>                     from drivers/mmc/host/sdhci.c:12:
>    drivers/mmc/host/sdhci.c: In function 'sdhci_request_atomic':
>    drivers/mmc/host/sdhci.c:2076:6: error: implicit declaration of function 'sdhci_present_error' [-Werror=implicit-function-declaration]
>      if (sdhci_present_error(host, mrq->cmd, true)) {
>          ^
>    include/linux/compiler.h:58:52: note: in definition of macro '__trace_if_var'
>     #define __trace_if_var(cond) (__builtin_constant_p(cond) ? (cond) : __trace_if_value(cond))
>                                                        ^
> >> drivers/mmc/host/sdhci.c:2076:2: note: in expansion of macro 'if'
>      if (sdhci_present_error(host, mrq->cmd, true)) {
>      ^
>    drivers/mmc/host/sdhci.c:2081:8: error: implicit declaration of function 'sdhci_manual_cmd23' [-Werror=implicit-function-declaration]
>      cmd = sdhci_manual_cmd23(host, mrq) ? mrq->sbc : mrq->cmd;
>            ^
>    drivers/mmc/host/sdhci.c:2090:2: error: invalid use of void expression
>      if (!sdhci_send_command(host, cmd))
>      ^
>    drivers/mmc/host/sdhci.c:2090:2: error: invalid use of void expression
>    In file included from include/linux/build_bug.h:5:0,
>                     from include/linux/bitfield.h:10,
>                     from drivers/mmc/host/sdhci.c:12:
> >> include/linux/compiler.h:61:16: error: invalid use of void expression
>      static struct ftrace_branch_data  \
>                    ^
>    include/linux/compiler.h:58:69: note: in expansion of macro '__trace_if_value'
>     #define __trace_if_var(cond) (__builtin_constant_p(cond) ? (cond) : __trace_if_value(cond))
>                                                                         ^
>    include/linux/compiler.h:56:28: note: in expansion of macro '__trace_if_var'
>     #define if(cond, ...) if ( __trace_if_var( !!(cond , ## __VA_ARGS__) ) )
>                                ^
>    drivers/mmc/host/sdhci.c:2090:2: note: in expansion of macro 'if'
>      if (!sdhci_send_command(host, cmd))
>      ^
>    cc1: some warnings being treated as errors
>
> vim +/if +2076 drivers/mmc/host/sdhci.c
>
>   2066
>   2067  int sdhci_request_atomic(struct mmc_host *mmc, struct mmc_request *mrq)
>   2068  {
>   2069          struct sdhci_host *host = mmc_priv(mmc);
>   2070          struct mmc_command *cmd;
>   2071          unsigned long flags;
>   2072          int ret = 0;
>   2073
>   2074          spin_lock_irqsave(&host->lock, flags);
>   2075
> > 2076          if (sdhci_present_error(host, mrq->cmd, true)) {
>   2077                  sdhci_finish_mrq(host, mrq);
>   2078                  goto out_finish;
>   2079          }
>   2080
>   2081          cmd = sdhci_manual_cmd23(host, mrq) ? mrq->sbc : mrq->cmd;
>   2082
>   2083          /*
>   2084           * The HSQ may send a command in interrupt context without polling
>   2085           * the busy signaling, which means we should return BUSY if controller
>   2086           * has not released inhibit bits to allow HSQ trying to send request
>   2087           * again in non-atomic context. So we should not finish this request
>   2088           * here.
>   2089           */
>   2090          if (!sdhci_send_command(host, cmd))
>   2091                  ret = -EBUSY;
>   2092          else
>   2093                  sdhci_led_activate(host);
>   2094
>   2095  out_finish:
>   2096          spin_unlock_irqrestore(&host->lock, flags);
>   2097          return ret;
>   2098  }
>   2099  EXPORT_SYMBOL_GPL(sdhci_request_atomic);
>   2100
>
> ---
> 0-DAY CI Kernel Test Service, Intel Corporation
> https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org



-- 
Baolin Wang