Re: [PATCH v2 1/2] vgaarb: various coding style and comments fix

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Match the subject line style:

  $ git log --oneline drivers/pci/vgaarb.c
  f321c35feaee PCI/VGA: Replace full MIT license text with SPDX identifier
  d5109fe4d1ec PCI/VGA: Use unsigned format string to print lock counts
  4e6c91847a7f PCI/VGA: Log bridge control messages when adding devices
  dc593fd48abb PCI/VGA: Remove empty vga_arb_device_card_gone()
  ...

Subject line should be a summary of the commit log, not just "various
style fixes".  This one needs to say something about
vga_str_to_iostate().

On Mon, Jun 05, 2023 at 04:58:30AM +0800, Sui Jingfeng wrote:
> From: Sui Jingfeng <suijingfeng@xxxxxxxxxxx>
> 
> To keep consistent with vga_iostate_to_str() function, the third argument
> of vga_str_to_iostate() function should be 'unsigned int *'.
> 
> Signed-off-by: Sui Jingfeng <suijingfeng@xxxxxxxxxxx>
> ---
>  drivers/pci/vgaarb.c   | 29 +++++++++++++++--------------
>  include/linux/vgaarb.h |  8 +++-----
>  2 files changed, 18 insertions(+), 19 deletions(-)
> 
> diff --git a/drivers/pci/vgaarb.c b/drivers/pci/vgaarb.c
> index 5a696078b382..e40e6e5e5f03 100644
> --- a/drivers/pci/vgaarb.c
> +++ b/drivers/pci/vgaarb.c
> @@ -61,7 +61,6 @@ static bool vga_arbiter_used;
>  static DEFINE_SPINLOCK(vga_lock);
>  static DECLARE_WAIT_QUEUE_HEAD(vga_wait_queue);
>  
> -
>  static const char *vga_iostate_to_str(unsigned int iostate)
>  {
>  	/* Ignore VGA_RSRC_IO and VGA_RSRC_MEM */
> @@ -77,10 +76,12 @@ static const char *vga_iostate_to_str(unsigned int iostate)
>  	return "none";
>  }
>  
> -static int vga_str_to_iostate(char *buf, int str_size, int *io_state)
> +static int vga_str_to_iostate(char *buf, int str_size, unsigned int *io_state)
>  {
> -	/* we could in theory hand out locks on IO and mem
> -	 * separately to userspace but it can cause deadlocks */
> +	/*
> +	 * we could in theory hand out locks on IO and mem
> +	 * separately to userspace but it can cause deadlocks
> +	 */

Omit all the comment formatting changes.  They are distractions from the
vga_str_to_iostate() parameter change.

I think this patch should be the single line change to the
vga_str_to_iostate() prototype so it matches the callers.

If you want to do the other comment formatting changes, they're fine,
but they should be all together in a separate patch that clearly
doesn't change the generated code.

Bjorn



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