Re: [PATCH v2 1/3] toshiba_acpi: Clean up variable declaration

[Darren Hart <dvhart@infradead.org>]

On Mon, Aug 29, 2016 at 09:37:34AM -0600, Azael Avalos wrote:
> This patch moves all the multiple line variable declaration to a
> single line declaration (except variables being initialized)
> following the reverse tree order, to conform to the practices
> of the kernel.

So... I don't really want to spend a lot of time on this patch :-) but... there
are some inconsistencies with the stated intent....

> 
> Signed-off-by: Azael Avalos <coproscefalo@gmail.com>
> ---
>  drivers/platform/x86/toshiba_acpi.c | 33 +++++++++++++++------------------
>  1 file changed, 15 insertions(+), 18 deletions(-)
> 
> diff --git a/drivers/platform/x86/toshiba_acpi.c b/drivers/platform/x86/toshiba_acpi.c
> index 9d60a40..54dea64 100644
> --- a/drivers/platform/x86/toshiba_acpi.c
> +++ b/drivers/platform/x86/toshiba_acpi.c
> @@ -321,10 +321,9 @@ static int write_acpi_int(const char *methodName, int val)
>  static acpi_status tci_raw(struct toshiba_acpi_dev *dev,
>  			   const u32 in[TCI_WORDS], u32 out[TCI_WORDS])
>  {
> +	union acpi_object in_objs[TCI_WORDS], out_objs[TCI_WORDS + 1];
>  	struct acpi_object_list params;
> -	union acpi_object in_objs[TCI_WORDS];
>  	struct acpi_buffer results;
> -	union acpi_object out_objs[TCI_WORDS + 1];
>  	acpi_status status;
>  	int i;
>  
> @@ -387,9 +386,8 @@ static int sci_open(struct toshiba_acpi_dev *dev)
>  {
>  	u32 in[TCI_WORDS] = { SCI_OPEN, 0, 0, 0, 0, 0 };
>  	u32 out[TCI_WORDS];
> -	acpi_status status;
> +	acpi_status status = tci_raw(dev, in, out);
>  
> -	status = tci_raw(dev, in, out);
>  	if  (ACPI_FAILURE(status)) {
>  		pr_err("ACPI call to open SCI failed\n");
>  		return 0;
> @@ -425,9 +423,8 @@ static void sci_close(struct toshiba_acpi_dev *dev)
>  {
>  	u32 in[TCI_WORDS] = { SCI_CLOSE, 0, 0, 0, 0, 0 };
>  	u32 out[TCI_WORDS];
> -	acpi_status status;
> +	acpi_status status = tci_raw(dev, in, out);
>  
> -	status = tci_raw(dev, in, out);
>  	if (ACPI_FAILURE(status)) {
>  		pr_err("ACPI call to close SCI failed\n");
>  		return;
> @@ -509,7 +506,8 @@ static enum led_brightness toshiba_illumination_get(struct led_classdev *cdev)
>  {
>  	struct toshiba_acpi_dev *dev = container_of(cdev,
>  			struct toshiba_acpi_dev, led_dev);
> -	u32 state, result;
> +	u32 result;
> +	u32 state;
>  
>  	/* First request : initialize communication. */
>  	if (!sci_open(dev))
> @@ -672,9 +670,9 @@ static int toshiba_touchpad_get(struct toshiba_acpi_dev *dev, u32 *state)
>  /* Eco Mode support */
>  static void toshiba_eco_mode_available(struct toshiba_acpi_dev *dev)
>  {
> -	acpi_status status;
>  	u32 in[TCI_WORDS] = { HCI_GET, HCI_ECO_MODE, 0, 0, 0, 0 };
>  	u32 out[TCI_WORDS];
> +	acpi_status status;
>  
>  	dev->eco_supported = 0;
>  	dev->eco_led_registered = false;
> @@ -1282,9 +1280,9 @@ static struct proc_dir_entry *toshiba_proc_dir;
>  /* LCD Brightness */
>  static int __get_lcd_brightness(struct toshiba_acpi_dev *dev)
>  {
> +	int brightness = 0;
>  	u32 result;
>  	u32 value;
> -	int brightness = 0;
>  
>  	if (dev->tr_backlight_supported) {
>  		int ret = get_tr_backlight_status(dev, &value);
> @@ -1377,7 +1375,7 @@ static ssize_t lcd_proc_write(struct file *file, const char __user *buf,
>  	struct toshiba_acpi_dev *dev = PDE_DATA(file_inode(file));
>  	char cmd[42];
>  	size_t len;
> -	int levels = dev->backlight_dev->props.max_brightness + 1;
> +	int levels;
>  	int value;
>  
>  	len = min(count, sizeof(cmd) - 1);
> @@ -1385,6 +1383,7 @@ static ssize_t lcd_proc_write(struct file *file, const char __user *buf,
>  		return -EFAULT;
>  	cmd[len] = '\0';
>  
> +	levels = dev->backlight_dev->props.max_brightness + 1;
>  	if (sscanf(cmd, " brightness : %i", &value) != 1 &&
>  	    value < 0 && value > levels)
>  		return -EINVAL;
> @@ -1447,10 +1446,8 @@ static ssize_t video_proc_write(struct file *file, const char __user *buf,
>  	struct toshiba_acpi_dev *dev = PDE_DATA(file_inode(file));
>  	char *buffer;
>  	char *cmd;
> +	int lcd_out, crt_out, tv_out;
>  	int remain = count;
> -	int lcd_out = -1;
> -	int crt_out = -1;
> -	int tv_out = -1;
>  	int value;
>  	int ret;
>  	u32 video_out;
> @@ -1486,6 +1483,7 @@ static ssize_t video_proc_write(struct file *file, const char __user *buf,
>  
>  	kfree(cmd);
>  
> +	lcd_out = crt_out = tv_out = -1;
>  	ret = get_video_status(dev, &video_out);
>  	if (!ret) {
>  		unsigned int new_video_out = video_out;
> @@ -1980,9 +1978,9 @@ static ssize_t usb_sleep_charge_store(struct device *dev,
>  				      const char *buf, size_t count)
>  {
>  	struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
> -	u32 mode;
>  	int state;
>  	int ret;
> +	u32 mode;

This is not consistent with the stated changes in the changelog, u32 mode is
longer than int ret, and should come before.

>  
>  	ret = kstrtoint(buf, 0, &state);
>  	if (ret)
> @@ -2021,11 +2019,10 @@ static ssize_t sleep_functions_on_battery_show(struct device *dev,
>  					       char *buf)
>  {
>  	struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
> -	u32 state;
> -	int bat_lvl;
> -	int status;
> +	int bat_lvl, status;
>  	int ret;
>  	int tmp;
> +	u32 state;

Here too (I'd just drop this change)

>  
>  	ret = toshiba_sleep_functions_status_get(toshiba, &state);
>  	if (ret < 0)
> @@ -3015,8 +3012,8 @@ static int toshiba_acpi_add(struct acpi_device *acpi_dev)
>  {
>  	struct toshiba_acpi_dev *dev;
>  	const char *hci_method;
> -	u32 dummy;
>  	int ret = 0;
> +	u32 dummy;

And here, per your exception for initialization.

So, what I've done is fixed the last three instances, and queued this to
for-next to save both our time on back and forth. Let me know if you object.

-- 
Darren Hart
Intel Open Source Technology Center