[PATCH 1/2] android: binderfs: add missing parameters in binder_ctl_ioctl()'s doc

[PATCH 1/2] android: binderfs: add missing parameters in binder_ctl_ioctl()'s doc

[Sunday Adelodun]

The kernel-doc comment for binder_ctl_ioctl() lacks descriptions for the
@file, @cmd, and @arg parameters, which triggers warnings during
documentation builds.

Add the missing parameter descriptions to keep the
kernel-doc consistent and free of warnings.

Reported-by: kernel test robot <lkp@intel.com>
Closes:
https://lore.kernel.org/oe-kbuild-all/202511201725.ni2HZ2PP-lkp@intel.com/
Signed-off-by: Sunday Adelodun <adelodunolaoluwa@yahoo.com>
---
 drivers/android/binderfs.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/android/binderfs.c b/drivers/android/binderfs.c
index be8e64eb39ec..47f6d1e5971e 100644
--- a/drivers/android/binderfs.c
+++ b/drivers/android/binderfs.c
@@ -224,6 +224,9 @@ static int binderfs_binder_device_create(struct inode *ref_inode,
 
 /**
  * binder_ctl_ioctl - handle binder device node allocation requests
+ * @file: The file pointer for the binder-control device node.
+ * @cmd: The ioctl command.
+ * @arg: The ioctl argument.
  *
  * The request handler for the binder-control device. All requests operate on
  * the binderfs mount the binder-control device resides in:
-- 
2.43.0

[PATCH 2/2] android: binder: add missing return value documentation for binder_apply_fd_fixups()

[Sunday Adelodun]

The kernel-doc for binder_apply_fd_fixups() was missing a description of
its return value, which triggers a kernel-doc warning.

Add the missing "Return:" entry to doc that the function returns 0 on
success or a negative errno on failure.

Signed-off-by: Sunday Adelodun <adelodunolaoluwa@yahoo.com>
---
 drivers/android/binder.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/android/binder.c b/drivers/android/binder.c
index a3a1b5c33ba3..535fc881c8da 100644
--- a/drivers/android/binder.c
+++ b/drivers/android/binder.c
@@ -4669,6 +4669,8 @@ static int binder_wait_for_work(struct binder_thread *thread,
  *
  * If we fail to allocate an fd, skip the install and release
  * any fds that have already been allocated.
+ *
+ * Return: 0 on success, a negative errno code on failure.
  */
 static int binder_apply_fd_fixups(struct binder_proc *proc,
 				  struct binder_transaction *t)
-- 
2.43.0

Re: [PATCH 1/2] android: binderfs: add missing parameters in binder_ctl_ioctl()'s doc

[Carlos Llamas]

On Fri, Nov 21, 2025 at 12:12:02PM +0100, Sunday Adelodun wrote:
> The kernel-doc comment for binder_ctl_ioctl() lacks descriptions for the
> @file, @cmd, and @arg parameters, which triggers warnings during
> documentation builds.

Could you please add the warnings here?

> 
> Add the missing parameter descriptions to keep the
> kernel-doc consistent and free of warnings.
> 
> Reported-by: kernel test robot <lkp@intel.com>
> Closes:
> https://lore.kernel.org/oe-kbuild-all/202511201725.ni2HZ2PP-lkp@intel.com/

The link for the `Closes:` tag should be on the same line.

> Signed-off-by: Sunday Adelodun <adelodunolaoluwa@yahoo.com>
> ---
>  drivers/android/binderfs.c | 3 +++
>  1 file changed, 3 insertions(+)
> 
> diff --git a/drivers/android/binderfs.c b/drivers/android/binderfs.c
> index be8e64eb39ec..47f6d1e5971e 100644
> --- a/drivers/android/binderfs.c
> +++ b/drivers/android/binderfs.c
> @@ -224,6 +224,9 @@ static int binderfs_binder_device_create(struct inode *ref_inode,
>  
>  /**
>   * binder_ctl_ioctl - handle binder device node allocation requests
> + * @file: The file pointer for the binder-control device node.
> + * @cmd: The ioctl command.
> + * @arg: The ioctl argument.

Can you please follow other kernel-doc format in the file? e.g.
alignment, no period at the end, etc.

>   *
>   * The request handler for the binder-control device. All requests operate on
>   * the binderfs mount the binder-control device resides in:
> -- 
> 2.43.0
> 

This is the wrong file though. The reported issue was for the
drivers/android/binder/rust_binderfs.c file. Can you add the same
kernel-doc additions to both files in your next version?

Thanks,
Carlos Llamas

Re: [PATCH 2/2] android: binder: add missing return value documentation for binder_apply_fd_fixups()

[Carlos Llamas]

On Fri, Nov 21, 2025 at 12:12:03PM +0100, Sunday Adelodun wrote:
> The kernel-doc for binder_apply_fd_fixups() was missing a description of
> its return value, which triggers a kernel-doc warning.

How does one trigger this warning? Was there a report of this? Can you
add the warning you see to the commit message?

> 
> Add the missing "Return:" entry to doc that the function returns 0 on
> success or a negative errno on failure.
> 
> Signed-off-by: Sunday Adelodun <adelodunolaoluwa@yahoo.com>
> ---
>  drivers/android/binder.c | 2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/drivers/android/binder.c b/drivers/android/binder.c
> index a3a1b5c33ba3..535fc881c8da 100644
> --- a/drivers/android/binder.c
> +++ b/drivers/android/binder.c
> @@ -4669,6 +4669,8 @@ static int binder_wait_for_work(struct binder_thread *thread,
>   *
>   * If we fail to allocate an fd, skip the install and release
>   * any fds that have already been allocated.
> + *
> + * Return: 0 on success, a negative errno code on failure.
>   */
>  static int binder_apply_fd_fixups(struct binder_proc *proc,
>  				  struct binder_transaction *t)
> -- 
> 2.43.0
>

Thanks,
Carlos Llamas

Re: [PATCH 2/2] android: binder: add missing return value documentation for binder_apply_fd_fixups()

[Carlos Llamas]

On Tue, Dec 02, 2025 at 05:11:40PM +0000, Carlos Llamas wrote:
> On Fri, Nov 21, 2025 at 12:12:03PM +0100, Sunday Adelodun wrote:
> > The kernel-doc for binder_apply_fd_fixups() was missing a description of
> > its return value, which triggers a kernel-doc warning.
> 
> How does one trigger this warning? Was there a report of this? Can you
> add the warning you see to the commit message?

Ha! I guess one needs to ask for this warn:

$ ./scripts/kernel-doc -Wreturn drivers/android/binder.c > /dev/null
Warning: drivers/android/binder.c:4674 No description found for return value of 'binder_apply_fd_fixups'