[PATCH -next] scsi: ufs: ufs-mediatek: Fix build error

[PATCH -next] scsi: ufs: ufs-mediatek: Fix build error

[Ren Zhijie]

If CONFIG_PM is not set,
make ARCH=arm64 CROSS_COMPILE=aarch64-linux-gnu-, will be failed, like this:
drivers/ufs/host/ufs-mediatek.c: In function ‘ufs_mtk_runtime_suspend’:
drivers/ufs/host/ufs-mediatek.c:1435:8: error: implicit declaration of function ‘ufshcd_runtime_suspend’; did you mean ‘ufs_mtk_runtime_suspend’? [-Werror=implicit-function-declaration]
  ret = ufshcd_runtime_suspend(dev);
        ^~~~~~~~~~~~~~~~~~~~~~
        ufs_mtk_runtime_suspend
drivers/ufs/host/ufs-mediatek.c: In function ‘ufs_mtk_runtime_resume’:
drivers/ufs/host/ufs-mediatek.c:1450:9: error: implicit declaration of function ‘ufshcd_runtime_resume’; did you mean ‘ufs_mtk_runtime_resume’? [-Werror=implicit-function-declaration]
  return ufshcd_runtime_resume(dev);
         ^~~~~~~~~~~~~~~~~~~~~
         ufs_mtk_runtime_resume
At top level:
drivers/ufs/host/ufs-mediatek.c:1444:12: error: ‘ufs_mtk_runtime_resume’ defined but not used [-Werror=unused-function]
 static int ufs_mtk_runtime_resume(struct device *dev)
            ^~~~~~~~~~~~~~~~~~~~~~
drivers/ufs/host/ufs-mediatek.c:1430:12: error: ‘ufs_mtk_runtime_suspend’ defined but not used [-Werror=unused-function]
 static int ufs_mtk_runtime_suspend(struct device *dev)
            ^~~~~~~~~~~~~~~~~~~~~~~
cc1: all warnings being treated as errors

The declarations of func "ufshcd_runtime_suspend()" and "ufshcd_runtime_resume()" depended on CONFIG_PM, so the function wrappers "ufs_mtk_runtime_suspend()" and "ufs_mtk_runtime_resume()"  both should warpped by CONFIG_PM too.

Reported-by: Hulk Robot <hulkci@huawei.com>
Fixes: e7bf1d50063c ("scsi: ufs: ufs-mediatek: Fix build warnings")
Signed-off-by: Ren Zhijie <renzhijie2@huawei.com>
---
 drivers/ufs/host/ufs-mediatek.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/ufs/host/ufs-mediatek.c b/drivers/ufs/host/ufs-mediatek.c
index c958279bdd8f..e006c2528a3a 100644
--- a/drivers/ufs/host/ufs-mediatek.c
+++ b/drivers/ufs/host/ufs-mediatek.c
@@ -1427,6 +1427,7 @@ static int ufs_mtk_system_resume(struct device *dev)
 }
 #endif
 
+#ifdef CONFIG_PM
 static int ufs_mtk_runtime_suspend(struct device *dev)
 {
 	struct ufs_hba *hba = dev_get_drvdata(dev);
@@ -1449,6 +1450,7 @@ static int ufs_mtk_runtime_resume(struct device *dev)
 
 	return ufshcd_runtime_resume(dev);
 }
+#endif
 
 static const struct dev_pm_ops ufs_mtk_pm_ops = {
 	SET_SYSTEM_SLEEP_PM_OPS(ufs_mtk_system_suspend,
-- 
2.17.1

Re: [PATCH -next] scsi: ufs: ufs-mediatek: Fix build error

[Ren Zhijie]

Hi,

Just friendly ping...

在 2022/7/4 10:56, Ren Zhijie 写道:
> If CONFIG_PM is not set,
> make ARCH=arm64 CROSS_COMPILE=aarch64-linux-gnu-, will be failed, like this:
> drivers/ufs/host/ufs-mediatek.c: In function ‘ufs_mtk_runtime_suspend’:
> drivers/ufs/host/ufs-mediatek.c:1435:8: error: implicit declaration of function ‘ufshcd_runtime_suspend’; did you mean ‘ufs_mtk_runtime_suspend’? [-Werror=implicit-function-declaration]
>    ret = ufshcd_runtime_suspend(dev);
>          ^~~~~~~~~~~~~~~~~~~~~~
>          ufs_mtk_runtime_suspend
> drivers/ufs/host/ufs-mediatek.c: In function ‘ufs_mtk_runtime_resume’:
> drivers/ufs/host/ufs-mediatek.c:1450:9: error: implicit declaration of function ‘ufshcd_runtime_resume’; did you mean ‘ufs_mtk_runtime_resume’? [-Werror=implicit-function-declaration]
>    return ufshcd_runtime_resume(dev);
>           ^~~~~~~~~~~~~~~~~~~~~
>           ufs_mtk_runtime_resume
> At top level:
> drivers/ufs/host/ufs-mediatek.c:1444:12: error: ‘ufs_mtk_runtime_resume’ defined but not used [-Werror=unused-function]
>   static int ufs_mtk_runtime_resume(struct device *dev)
>              ^~~~~~~~~~~~~~~~~~~~~~
> drivers/ufs/host/ufs-mediatek.c:1430:12: error: ‘ufs_mtk_runtime_suspend’ defined but not used [-Werror=unused-function]
>   static int ufs_mtk_runtime_suspend(struct device *dev)
>              ^~~~~~~~~~~~~~~~~~~~~~~
> cc1: all warnings being treated as errors
>
> The declarations of func "ufshcd_runtime_suspend()" and "ufshcd_runtime_resume()" depended on CONFIG_PM, so the function wrappers "ufs_mtk_runtime_suspend()" and "ufs_mtk_runtime_resume()"  both should warpped by CONFIG_PM too.
>
> Reported-by: Hulk Robot <hulkci@huawei.com>
> Fixes: e7bf1d50063c ("scsi: ufs: ufs-mediatek: Fix build warnings")
> Signed-off-by: Ren Zhijie <renzhijie2@huawei.com>
> ---
>   drivers/ufs/host/ufs-mediatek.c | 2 ++
>   1 file changed, 2 insertions(+)
>
> diff --git a/drivers/ufs/host/ufs-mediatek.c b/drivers/ufs/host/ufs-mediatek.c
> index c958279bdd8f..e006c2528a3a 100644
> --- a/drivers/ufs/host/ufs-mediatek.c
> +++ b/drivers/ufs/host/ufs-mediatek.c
> @@ -1427,6 +1427,7 @@ static int ufs_mtk_system_resume(struct device *dev)
>   }
>   #endif
>   
> +#ifdef CONFIG_PM
>   static int ufs_mtk_runtime_suspend(struct device *dev)
>   {
>   	struct ufs_hba *hba = dev_get_drvdata(dev);
> @@ -1449,6 +1450,7 @@ static int ufs_mtk_runtime_resume(struct device *dev)
>   
>   	return ufshcd_runtime_resume(dev);
>   }
> +#endif
>   
>   static const struct dev_pm_ops ufs_mtk_pm_ops = {
>   	SET_SYSTEM_SLEEP_PM_OPS(ufs_mtk_system_suspend,

Re: [PATCH -next] scsi: ufs: ufs-mediatek: Fix build error

[Stanley Chu]

Hi Ren,

On Mon, 2022-07-11 at 09:23 +0800, Ren Zhijie wrote:
> Hi,
> 

Thanks for this fix.

Reviewed-by: Stanley Chu <stanley.chu@mediatek.com>

Re: [PATCH -next] scsi: ufs: ufs-mediatek: Fix build error

[Bart Van Assche]

On 7/3/22 19:56, Ren Zhijie wrote:
> 

Reviewed-by: Bart Van Assche <bvanassche@acm.org>

Re: [PATCH -next] scsi: ufs: ufs-mediatek: Fix build error

[Arnd Bergmann]

On Mon, Jul 4, 2022 at 4:56 AM Ren Zhijie <renzhijie2@huawei.com> wrote:
> diff --git a/drivers/ufs/host/ufs-mediatek.c b/drivers/ufs/host/ufs-mediatek.c
> index c958279bdd8f..e006c2528a3a 100644
> --- a/drivers/ufs/host/ufs-mediatek.c
> +++ b/drivers/ufs/host/ufs-mediatek.c
> @@ -1427,6 +1427,7 @@ static int ufs_mtk_system_resume(struct device *dev)
>  }
>  #endif
>
> +#ifdef CONFIG_PM
>  static int ufs_mtk_runtime_suspend(struct device *dev)
>  {
>         struct ufs_hba *hba = dev_get_drvdata(dev);
> @@ -1449,6 +1450,7 @@ static int ufs_mtk_runtime_resume(struct device *dev)
>
>         return ufshcd_runtime_resume(dev);
>  }
> +#endif
>
>  static const struct dev_pm_ops ufs_mtk_pm_ops = {
>         SET_SYSTEM_SLEEP_PM_OPS(ufs_mtk_system_suspend,

This change works, but it's not great. It's better to change the
SET_SYSTEM_SLEEP_PM_OPS() to the new SYSTEM_SLEEP_PM_OPS()
that works without the #ifdef.

         Arnd

Re: [PATCH -next] scsi: ufs: ufs-mediatek: Fix build error

[Ren Zhijie]

在 2022/7/12 16:27, Arnd Bergmann 写道:
> On Mon, Jul 4, 2022 at 4:56 AM Ren Zhijie <renzhijie2@huawei.com> wrote:
>> diff --git a/drivers/ufs/host/ufs-mediatek.c b/drivers/ufs/host/ufs-mediatek.c
>> index c958279bdd8f..e006c2528a3a 100644
>> --- a/drivers/ufs/host/ufs-mediatek.c
>> +++ b/drivers/ufs/host/ufs-mediatek.c
>> @@ -1427,6 +1427,7 @@ static int ufs_mtk_system_resume(struct device *dev)
>>   }
>>   #endif
>>
>> +#ifdef CONFIG_PM
>>   static int ufs_mtk_runtime_suspend(struct device *dev)
>>   {
>>          struct ufs_hba *hba = dev_get_drvdata(dev);
>> @@ -1449,6 +1450,7 @@ static int ufs_mtk_runtime_resume(struct device *dev)
>>
>>          return ufshcd_runtime_resume(dev);
>>   }
>> +#endif
>>
>>   static const struct dev_pm_ops ufs_mtk_pm_ops = {
>>          SET_SYSTEM_SLEEP_PM_OPS(ufs_mtk_system_suspend,
> This change works, but it's not great. It's better to change the
> SET_SYSTEM_SLEEP_PM_OPS() to the new SYSTEM_SLEEP_PM_OPS()
> that works without the #ifdef.
>
>           Arnd

Hi Arnd,

Thanks for your suggestion.

How does it to fix the implicit-function-declaration error?

Thanks,

Ren Zhijie

> .

Re: [PATCH -next] scsi: ufs: ufs-mediatek: Fix build error

[Arnd Bergmann]

On Wed, Jul 13, 2022 at 3:44 AM Ren Zhijie <renzhijie2@huawei.com> wrote:
> 在 2022/7/12 16:27, Arnd Bergmann 写道:
>
> Thanks for your suggestion.
>
> How does it to fix the implicit-function-declaration error?
>

I missed that part at first. I would say the #ifdef around the
declarations in the
header should be removed here, it serves no purpose, and it is safe to rely
on the compiler to perform dead code elimination so this does not lead to
a link error even if a dead function references another function that is not
reachable.

        Arnd

Re: [PATCH -next] scsi: ufs: ufs-mediatek: Fix build error

[Ren Zhijie]

在 2022/7/13 16:48, Arnd Bergmann 写道:
> On Wed, Jul 13, 2022 at 3:44 AM Ren Zhijie <renzhijie2@huawei.com> wrote:
>> 在 2022/7/12 16:27, Arnd Bergmann 写道:
>>
>> Thanks for your suggestion.
>>
>> How does it to fix the implicit-function-declaration error?
>>
> I missed that part at first. I would say the #ifdef around the
> declarations in the
> header should be removed here, it serves no purpose, and it is safe to rely
> on the compiler to perform dead code elimination so this does not lead to
> a link error even if a dead function references another function that is not
> reachable.
>
>          Arnd

Hi Arnd,

I try to use the new marcos SYSTEM_SLEEP_PM_OPS and RUNTIME_PM_OPS to 
replace the old ones, and remove #ifdef around the declarations in the 
header, my local changes attach below.

But it seems  that doesn't work, which has ld errors:

aarch64-linux-gnu-ld: Unexpected GOT/PLT entries detected!
aarch64-linux-gnu-ld: Unexpected run-time procedure linkages detected!
drivers/ufs/host/ufs-mediatek.o: In function `ufs_mtk_runtime_resume':
ufs-mediatek.c:(.text+0x1d0c): undefined reference to 
`ufshcd_runtime_resume'
drivers/ufs/host/ufs-mediatek.o: In function `ufs_mtk_runtime_suspend':
ufs-mediatek.c:(.text+0x1d64): undefined reference to 
`ufshcd_runtime_suspend'
Makefile:1255: recipe for target 'vmlinux' failed
make: *** [vmlinux] Error 1

(CONFIG_PM and CONFIG_PM_SLEEP are both not set, and

run cmd: make ARCH=arm64 CROSS_COMPILE=aarch64-linux-gnu-)

Thanks,

Ren Zhijie

--

diff --git a/drivers/ufs/host/ufs-mediatek.c 
b/drivers/ufs/host/ufs-mediatek.c
index c958279bdd8f..8c0c6f04eed1 100644
--- a/drivers/ufs/host/ufs-mediatek.c
+++ b/drivers/ufs/host/ufs-mediatek.c
@@ -1402,7 +1402,6 @@ static int ufs_mtk_remove(struct platform_device 
*pdev)
         return 0;
  }

-#ifdef CONFIG_PM_SLEEP
  static int ufs_mtk_system_suspend(struct device *dev)
  {
         struct ufs_hba *hba = dev_get_drvdata(dev);
@@ -1425,7 +1424,6 @@ static int ufs_mtk_system_resume(struct device *dev)

         return ufshcd_system_resume(dev);
  }
-#endif

  static int ufs_mtk_runtime_suspend(struct device *dev)
  {
@@ -1451,9 +1449,9 @@ static int ufs_mtk_runtime_resume(struct device *dev)
  }

  static const struct dev_pm_ops ufs_mtk_pm_ops = {
-       SET_SYSTEM_SLEEP_PM_OPS(ufs_mtk_system_suspend,
+       SYSTEM_SLEEP_PM_OPS(ufs_mtk_system_suspend,
                                 ufs_mtk_system_resume)
-       SET_RUNTIME_PM_OPS(ufs_mtk_runtime_suspend,
+       RUNTIME_PM_OPS(ufs_mtk_runtime_suspend,
                            ufs_mtk_runtime_resume, NULL)
         .prepare         = ufshcd_suspend_prepare,
         .complete        = ufshcd_resume_complete,
diff --git a/include/ufs/ufshcd.h b/include/ufs/ufshcd.h
index 7fe1a926cd99..17ec18d55470 100644
--- a/include/ufs/ufshcd.h
+++ b/include/ufs/ufshcd.h
@@ -1081,14 +1081,10 @@ static inline void *ufshcd_get_variant(struct 
ufs_hba *hba)
         return hba->priv;
  }

-#ifdef CONFIG_PM
  extern int ufshcd_runtime_suspend(struct device *dev);
  extern int ufshcd_runtime_resume(struct device *dev);
-#endif
-#ifdef CONFIG_PM_SLEEP
  extern int ufshcd_system_suspend(struct device *dev);
  extern int ufshcd_system_resume(struct device *dev);
-#endif
  extern int ufshcd_shutdown(struct ufs_hba *hba);
  extern int ufshcd_dme_configure_adapt(struct ufs_hba *hba,
                                       int agreed_gear,

> .

Re: [PATCH -next] scsi: ufs: ufs-mediatek: Fix build error

[Arnd Bergmann]

On Mon, Jul 25, 2022 at 5:38 AM Ren Zhijie <renzhijie2@huawei.com> wrote:
> 在 2022/7/13 16:48, Arnd Bergmann 写道:
>
> I try to use the new marcos SYSTEM_SLEEP_PM_OPS and RUNTIME_PM_OPS to
> replace the old ones, and remove #ifdef around the declarations in the
> header, my local changes attach below.
>
> But it seems  that doesn't work, which has ld errors:
>
> aarch64-linux-gnu-ld: Unexpected GOT/PLT entries detected!
> aarch64-linux-gnu-ld: Unexpected run-time procedure linkages detected!
> drivers/ufs/host/ufs-mediatek.o: In function `ufs_mtk_runtime_resume':
> ufs-mediatek.c:(.text+0x1d0c): undefined reference to
> `ufshcd_runtime_resume'
> drivers/ufs/host/ufs-mediatek.o: In function `ufs_mtk_runtime_suspend':
> ufs-mediatek.c:(.text+0x1d64): undefined reference to
> `ufshcd_runtime_suspend'
> Makefile:1255: recipe for target 'vmlinux' failed
> make: *** [vmlinux] Error 1
>
> (CONFIG_PM and CONFIG_PM_SLEEP are both not set, and
>

It appears that there is a mistake in the RUNTIME_PM_OPS()
macro definition, can you try this patch on top?

diff --git a/include/linux/pm.h b/include/linux/pm.h
index 871c9c49ec9d..84592229d754 100644
--- a/include/linux/pm.h
+++ b/include/linux/pm.h
@@ -334,9 +334,9 @@ struct dev_pm_ops {
        .restore_noirq = pm_sleep_ptr(resume_fn),

 #define RUNTIME_PM_OPS(suspend_fn, resume_fn, idle_fn) \
-       .runtime_suspend = suspend_fn, \
-       .runtime_resume = resume_fn, \
-       .runtime_idle = idle_fn,
+       .runtime_suspend = pm_ptr(suspend_fn), \
+       .runtime_resume = pm_ptr(resume_fn), \
+       .runtime_idle = pm_ptr(idle_fn),

 #ifdef CONFIG_PM_SLEEP
 #define SET_SYSTEM_SLEEP_PM_OPS(suspend_fn, resume_fn) \

Commit 1a3c7bb08826 ("PM: core: Add new *_PM_OPS macros, deprecate
old ones") introduced all the macros with the intent of using pm_ptr()
and pm_sleep_ptr() in them, and I think Paul accidentally forgot to add
those in this instance.

       Arnd

Re: [PATCH -next] scsi: ufs: ufs-mediatek: Fix build error

[Ren Zhijie]

在 2022/7/25 14:34, Arnd Bergmann 写道:
> On Mon, Jul 25, 2022 at 5:38 AM Ren Zhijie <renzhijie2@huawei.com> wrote:
>> 在 2022/7/13 16:48, Arnd Bergmann 写道:
>>
>> I try to use the new marcos SYSTEM_SLEEP_PM_OPS and RUNTIME_PM_OPS to
>> replace the old ones, and remove #ifdef around the declarations in the
>> header, my local changes attach below.
>>
>> But it seems  that doesn't work, which has ld errors:
>>
>> aarch64-linux-gnu-ld: Unexpected GOT/PLT entries detected!
>> aarch64-linux-gnu-ld: Unexpected run-time procedure linkages detected!
>> drivers/ufs/host/ufs-mediatek.o: In function `ufs_mtk_runtime_resume':
>> ufs-mediatek.c:(.text+0x1d0c): undefined reference to
>> `ufshcd_runtime_resume'
>> drivers/ufs/host/ufs-mediatek.o: In function `ufs_mtk_runtime_suspend':
>> ufs-mediatek.c:(.text+0x1d64): undefined reference to
>> `ufshcd_runtime_suspend'
>> Makefile:1255: recipe for target 'vmlinux' failed
>> make: *** [vmlinux] Error 1
>>
>> (CONFIG_PM and CONFIG_PM_SLEEP are both not set, and
>>
> It appears that there is a mistake in the RUNTIME_PM_OPS()
> macro definition, can you try this patch on top?

Hi Arnd,


I apply this patch and it worked.

When will this patch be merged?


Thanks,

Ren

>
> diff --git a/include/linux/pm.h b/include/linux/pm.h
> index 871c9c49ec9d..84592229d754 100644
> --- a/include/linux/pm.h
> +++ b/include/linux/pm.h
> @@ -334,9 +334,9 @@ struct dev_pm_ops {
>          .restore_noirq = pm_sleep_ptr(resume_fn),
>
>   #define RUNTIME_PM_OPS(suspend_fn, resume_fn, idle_fn) \
> -       .runtime_suspend = suspend_fn, \
> -       .runtime_resume = resume_fn, \
> -       .runtime_idle = idle_fn,
> +       .runtime_suspend = pm_ptr(suspend_fn), \
> +       .runtime_resume = pm_ptr(resume_fn), \
> +       .runtime_idle = pm_ptr(idle_fn),
>
>   #ifdef CONFIG_PM_SLEEP
>   #define SET_SYSTEM_SLEEP_PM_OPS(suspend_fn, resume_fn) \
>
> Commit 1a3c7bb08826 ("PM: core: Add new *_PM_OPS macros, deprecate
> old ones") introduced all the macros with the intent of using pm_ptr()
> and pm_sleep_ptr() in them, and I think Paul accidentally forgot to add
> those in this instance.
>
>         Arnd
>
> .

Re: [PATCH -next] scsi: ufs: ufs-mediatek: Fix build error

[Arnd Bergmann]

On Mon, Jul 25, 2022 at 9:00 AM Ren Zhijie <renzhijie2@huawei.com> wrote:
> 在 2022/7/25 14:34, Arnd Bergmann 写道:
> > On Mon, Jul 25, 2022 at 5:38 AM Ren Zhijie <renzhijie2@huawei.com> wrote:
> >> 在 2022/7/13 16:48, Arnd Bergmann 写道:
> >>
> >> I try to use the new marcos SYSTEM_SLEEP_PM_OPS and RUNTIME_PM_OPS to
> >> replace the old ones, and remove #ifdef around the declarations in the
> >> header, my local changes attach below.
> >>
> >> But it seems  that doesn't work, which has ld errors:
> >>
> >> aarch64-linux-gnu-ld: Unexpected GOT/PLT entries detected!
> >> aarch64-linux-gnu-ld: Unexpected run-time procedure linkages detected!
> >> drivers/ufs/host/ufs-mediatek.o: In function `ufs_mtk_runtime_resume':
> >> ufs-mediatek.c:(.text+0x1d0c): undefined reference to
> >> `ufshcd_runtime_resume'
> >> drivers/ufs/host/ufs-mediatek.o: In function `ufs_mtk_runtime_suspend':
> >> ufs-mediatek.c:(.text+0x1d64): undefined reference to
> >> `ufshcd_runtime_suspend'
> >> Makefile:1255: recipe for target 'vmlinux' failed
> >> make: *** [vmlinux] Error 1
> >>
> >> (CONFIG_PM and CONFIG_PM_SLEEP are both not set, and
> >>
> > It appears that there is a mistake in the RUNTIME_PM_OPS()
> > macro definition, can you try this patch on top?
>
> Hi Arnd,
>
> I apply this patch and it worked.
>
> When will this patch be merged?

So far nobody has submitted this, I was just guessing and I had no idea
if this would do the right thing. Can you send this patch to the power
management maintainers with a proper changelog and a

Suggested-by: Arnd Bergmann <arnd@arndb.de>

 line? Thanks,

     Arnd

Re: [PATCH -next] scsi: ufs: ufs-mediatek: Fix build error

[Paul Cercueil]

Hi Arnd,

Le lun., juil. 25 2022 at 08:34:32 +0200, Arnd Bergmann <arnd@arndb.de> 
a écrit :
> On Mon, Jul 25, 2022 at 5:38 AM Ren Zhijie <renzhijie2@huawei.com> 
> wrote:
>>  在 2022/7/13 16:48, Arnd Bergmann 写道:
>> 
>>  I try to use the new marcos SYSTEM_SLEEP_PM_OPS and RUNTIME_PM_OPS 
>> to
>>  replace the old ones, and remove #ifdef around the declarations in 
>> the
>>  header, my local changes attach below.
>> 
>>  But it seems  that doesn't work, which has ld errors:
>> 
>>  aarch64-linux-gnu-ld: Unexpected GOT/PLT entries detected!
>>  aarch64-linux-gnu-ld: Unexpected run-time procedure linkages 
>> detected!
>>  drivers/ufs/host/ufs-mediatek.o: In function 
>> `ufs_mtk_runtime_resume':
>>  ufs-mediatek.c:(.text+0x1d0c): undefined reference to
>>  `ufshcd_runtime_resume'
>>  drivers/ufs/host/ufs-mediatek.o: In function 
>> `ufs_mtk_runtime_suspend':
>>  ufs-mediatek.c:(.text+0x1d64): undefined reference to
>>  `ufshcd_runtime_suspend'
>>  Makefile:1255: recipe for target 'vmlinux' failed
>>  make: *** [vmlinux] Error 1
>> 
>>  (CONFIG_PM and CONFIG_PM_SLEEP are both not set, and
>> 
> 
> It appears that there is a mistake in the RUNTIME_PM_OPS()
> macro definition, can you try this patch on top?
> 
> diff --git a/include/linux/pm.h b/include/linux/pm.h
> index 871c9c49ec9d..84592229d754 100644
> --- a/include/linux/pm.h
> +++ b/include/linux/pm.h
> @@ -334,9 +334,9 @@ struct dev_pm_ops {
>         .restore_noirq = pm_sleep_ptr(resume_fn),
> 
>  #define RUNTIME_PM_OPS(suspend_fn, resume_fn, idle_fn) \
> -       .runtime_suspend = suspend_fn, \
> -       .runtime_resume = resume_fn, \
> -       .runtime_idle = idle_fn,
> +       .runtime_suspend = pm_ptr(suspend_fn), \
> +       .runtime_resume = pm_ptr(resume_fn), \
> +       .runtime_idle = pm_ptr(idle_fn),

Not a mistake, the pm_ptr() macros are not needed here, because the 
dev_pm_ops pointer must always be wrapped with pm_ptr().

The proper fix is:

-  .pm     = &ufs_mtk_pm_ops,
+  .pm     = pm_ptr(&ufs_mtk_pm_ops),

Cheers,
-Paul

> 
>  #ifdef CONFIG_PM_SLEEP
>  #define SET_SYSTEM_SLEEP_PM_OPS(suspend_fn, resume_fn) \
> 
> Commit 1a3c7bb08826 ("PM: core: Add new *_PM_OPS macros, deprecate
> old ones") introduced all the macros with the intent of using pm_ptr()
> and pm_sleep_ptr() in them, and I think Paul accidentally forgot to 
> add
> those in this instance.
> 
>        Arnd