linux-kernel - Re: [PATCH 3/3] drivers:gpu: vga :vga_switcheroo.c : Fixed some coding style issues

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Date:   Wed, 01 Mar 2017 11:50:56 +0200
From:   Jani Nikula <jani.nikula@...ux.intel.com>
To:     Daniel Vetter <daniel@...ll.ch>, Joan Jani <igiann@...mail.com>
Cc:     "daniel.vetter\@intel.com" <daniel.vetter@...el.com>,
        "linux-kernel\@vger.kernel.org" <linux-kernel@...r.kernel.org>,
        "dri-devel\@lists.freedesktop.org" <dri-devel@...ts.freedesktop.org>
Subject: Re: [PATCH 3/3] drivers:gpu: vga :vga_switcheroo.c : Fixed some coding style issues

On Wed, 01 Mar 2017, Daniel Vetter <daniel@...ll.ch> wrote:
> On Tue, Feb 28, 2017 at 06:59:52PM +0000, Joan Jani wrote:
>> Fixed the following style issues
>> 
>> drivers/gpu/vga/vga_switcheroo.c:98: WARNING: please, no space before tabs
>> drivers/gpu/vga/vga_switcheroo.c:99: WARNING: please, no space before tabs
>> drivers/gpu/vga/vga_switcheroo.c:102: WARNING: please, no space before tabs
>> drivers/gpu/vga/vga_switcheroo.c:103: WARNING: please, no space before tabs
>> drivers/gpu/vga/vga_switcheroo.c:129: WARNING: please, no space before tabs
>> drivers/gpu/vga/vga_switcheroo.c:135: WARNING: please, no space before tabs
>> drivers/gpu/vga/vga_switcheroo.c:217: WARNING: line over 80 characters
>> drivers/gpu/vga/vga_switcheroo.c:218: WARNING: line over 80 characters
>> drivers/gpu/vga/vga_switcheroo.c:308: WARNING: please, no space before tabs
>> drivers/gpu/vga/vga_switcheroo.c:340: WARNING: line over 80 characters
>> drivers/gpu/vga/vga_switcheroo.c:1087: WARNING: Block comments use * on subsequent lines
>> drivers/gpu/vga/vga_switcheroo.c:1087: WARNING: Block comments use a trailing */ on a separate line
>> 
>> Signed-off-by: Joan Jani <igiann@...mail.com>
>
> Applied to drm-misc for 4.12, thanks.

Frankly, I wish you hadn't. The patch changed the perfectly fine:

int vga_switcheroo_register_handler(const struct vga_switcheroo_handler *handler,
				    enum vga_switcheroo_handler_flags_t handler_flags)

into horrendous:

int vga_switcheroo_register_handler(
			  const struct vga_switcheroo_handler *handler,
			  enum vga_switcheroo_handler_flags_t handler_flags)

Just to appease the 80 column rule. Ditto for
vga_switcheroo_register_audio_client. This is why we don't generally
want pure checkpatch fixes on existing files. They don't make things
better.

BR,
Jani.

> -Daniel
>
>> ---
>>  drivers/gpu/vga/vga_switcheroo.c | 28 +++++++++++++++-------------
>>  1 file changed, 15 insertions(+), 13 deletions(-)
>> 
>> diff --git a/drivers/gpu/vga/vga_switcheroo.c b/drivers/gpu/vga/vga_switcheroo.c
>> index 5f962bf..3cd153c 100644
>> --- a/drivers/gpu/vga/vga_switcheroo.c
>> +++ b/drivers/gpu/vga/vga_switcheroo.c
>> @@ -95,12 +95,12 @@
>>   * @pwr_state: current power state
>>   * @ops: client callbacks
>>   * @id: client identifier. Determining the id requires the handler,
>> - * 	so gpus are initially assigned VGA_SWITCHEROO_UNKNOWN_ID
>> - * 	and later given their true id in vga_switcheroo_enable()
>> + *	so gpus are initially assigned VGA_SWITCHEROO_UNKNOWN_ID
>> + *	and later given their true id in vga_switcheroo_enable()
>>   * @active: whether the outputs are currently switched to this client
>>   * @driver_power_control: whether power state is controlled by the driver's
>> - * 	runtime pm. If true, writing ON and OFF to the vga_switcheroo debugfs
>> - * 	interface is a no-op so as not to interfere with runtime pm
>> + *	runtime pm. If true, writing ON and OFF to the vga_switcheroo debugfs
>> + *	interface is a no-op so as not to interfere with runtime pm
>>   * @list: client list
>>   *
>>   * Registered client. A client can be either a GPU or an audio device on a GPU.
>> @@ -126,13 +126,13 @@ static DEFINE_MUTEX(vgasr_mutex);
>>  /**
>>   * struct vgasr_priv - vga_switcheroo private data
>>   * @active: whether vga_switcheroo is enabled.
>> - * 	Prerequisite is the registration of two GPUs and a handler
>> + *	Prerequisite is the registration of two GPUs and a handler
>>   * @delayed_switch_active: whether a delayed switch is pending
>>   * @delayed_client_id: client to which a delayed switch is pending
>>   * @debugfs_root: directory for vga_switcheroo debugfs interface
>>   * @switch_file: file for vga_switcheroo debugfs interface
>>   * @registered_clients: number of registered GPUs
>> - * 	(counting only vga clients, not audio clients)
>> + *	(counting only vga clients, not audio clients)
>>   * @clients: list of registered clients
>>   * @handler: registered handler
>>   * @handler_flags: flags of registered handler
>> @@ -214,8 +214,9 @@ static void vga_switcheroo_enable(void)
>>   *
>>   * Return: 0 on success, -EINVAL if a handler was already registered.
>>   */
>> -int vga_switcheroo_register_handler(const struct vga_switcheroo_handler *handler,
>> -				    enum vga_switcheroo_handler_flags_t handler_flags)
>> +int vga_switcheroo_register_handler(
>> +			  const struct vga_switcheroo_handler *handler,
>> +			  enum vga_switcheroo_handler_flags_t handler_flags)
>>  {
>>  	mutex_lock(&vgasr_mutex);
>>  	if (vgasr_priv.handler) {
>> @@ -305,7 +306,7 @@ static int register_client(struct pci_dev *pdev,
>>   * @pdev: client pci device
>>   * @ops: client callbacks
>>   * @driver_power_control: whether power state is controlled by the driver's
>> - * 	runtime pm
>> + *	runtime pm
>>   *
>>   * Register vga client (GPU). Enable vga_switcheroo if another GPU and a
>>   * handler have already registered. The power state of the client is assumed
>> @@ -337,8 +338,8 @@ EXPORT_SYMBOL(vga_switcheroo_register_client);
>>   * Return: 0 on success, -ENOMEM on memory allocation error.
>>   */
>>  int vga_switcheroo_register_audio_client(struct pci_dev *pdev,
>> -					 const struct vga_switcheroo_client_ops *ops,
>> -					 enum vga_switcheroo_client_id id)
>> +			const struct vga_switcheroo_client_ops *ops,
>> +			enum vga_switcheroo_client_id id)
>>  {
>>  	return register_client(pdev, ops, id | ID_BIT_AUDIO, false, false);
>>  }
>> @@ -1084,7 +1085,8 @@ static int vga_switcheroo_runtime_resume_hdmi_audio(struct device *dev)
>>  	int ret;
>>  
>>  	/* we need to check if we have to switch back on the video
>> -	   device so the audio device can come back */
>> +	 * device so the audio device can come back
>> +	 */
>>  	mutex_lock(&vgasr_mutex);
>>  	list_for_each_entry(client, &vgasr_priv.clients, list) {
>>  		if (PCI_SLOT(client->pdev->devfn) == PCI_SLOT(pdev->devfn) &&
>> @@ -1112,7 +1114,7 @@ static int vga_switcheroo_runtime_resume_hdmi_audio(struct device *dev)
>>  
>>  /**
>>   * vga_switcheroo_init_domain_pm_optimus_hdmi_audio() - helper for driver
>> - * 	power control
>> + *	power control
>>   * @dev: audio client device
>>   * @domain: power domain
>>   *
>> -- 
>> 2.7.4
>> 
>> _______________________________________________
>> dri-devel mailing list
>> dri-devel@...ts.freedesktop.org
>> https://lists.freedesktop.org/mailman/listinfo/dri-devel

-- 
Jani Nikula, Intel Open Source Technology Center

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