Re: [PATCH 03/11] staging: fbtft: Fixes some alignment and line > 80 char issues - Style

From: Dan Carpenter
Date: Tue Aug 07 2018 - 04:05:38 EST

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Split this up into two patches. One which changes alignment and one
which does the 80 character limit...

On Tue, Aug 07, 2018 at 01:05:33AM -0300, Leonardo Brás wrote:
> Signed-off-by: Leonardo Brás <leobras.c@xxxxxxxxx>
> ---
> drivers/staging/fbtft/fb_ssd1289.c | 6 +--
> drivers/staging/fbtft/fb_ssd1306.c | 3 +-
> drivers/staging/fbtft/fb_ssd1331.c | 9 ++++-
> drivers/staging/fbtft/fb_ssd1351.c | 43 +++++++++++++--------
> drivers/staging/fbtft/fb_st7735r.c | 19 +++++++---
> drivers/staging/fbtft/fb_st7789v.c | 13 +++----
> drivers/staging/fbtft/fb_watterott.c | 17 +++++----
> drivers/staging/fbtft/fbtft-bus.c | 21 ++++++----
> drivers/staging/fbtft/fbtft-core.c | 57 ++++++++++++++++++----------
> drivers/staging/fbtft/fbtft-io.c | 17 +++++----
> drivers/staging/fbtft/fbtft-sysfs.c | 4 +-
> drivers/staging/fbtft/fbtft.h | 38 +++++++++++++++----
> drivers/staging/fbtft/fbtft_device.c | 44 +++++++++++----------
> drivers/staging/fbtft/flexfb.c | 46 +++++++++++++---------
> 14 files changed, 214 insertions(+), 123 deletions(-)
>
> diff --git a/drivers/staging/fbtft/fb_ssd1289.c b/drivers/staging/fbtft/fb_ssd1289.c
> index 46116d06522c..67b3f8548241 100644
> --- a/drivers/staging/fbtft/fb_ssd1289.c
> +++ b/drivers/staging/fbtft/fb_ssd1289.c
> @@ -38,7 +38,7 @@ static int init_display(struct fbtft_par *par)
> write_reg(par, 0x0E, 0x2B00);
> write_reg(par, 0x1E, 0x00B7);
> write_reg(par, 0x01,
> - BIT(13) | (par->bgr << 11) | BIT(9) | (HEIGHT - 1));
> + BIT(13) | (par->bgr << 11) | BIT(9) | (HEIGHT - 1));
> write_reg(par, 0x02, 0x0600);
> write_reg(par, 0x10, 0x0000);
> write_reg(par, 0x05, 0x0000);
> @@ -98,8 +98,8 @@ static int set_var(struct fbtft_par *par)
> if (par->fbtftops.init_display != init_display) {
> /* don't risk messing up register 11h */
> fbtft_par_dbg(DEBUG_INIT_DISPLAY, par,
> - "%s: skipping since custom init_display() is used\n",
> - __func__);
> + "%s: skipping since custom init_display() is used\n",
> + __func__);
> return 0;
> }
>
> diff --git a/drivers/staging/fbtft/fb_ssd1306.c b/drivers/staging/fbtft/fb_ssd1306.c
> index 9276be499303..f5e0ec1c01dc 100644
> --- a/drivers/staging/fbtft/fb_ssd1306.c
> +++ b/drivers/staging/fbtft/fb_ssd1306.c
> @@ -184,7 +184,8 @@ static int write_vmem(struct fbtft_par *par, size_t offset, size_t len)
> for (y = 0; y < yres / 8; y++) {
> *buf = 0x00;
> for (i = 0; i < 8; i++)
> - *buf |= (vmem16[(y * 8 + i) * xres + x] ? 1 : 0) << i;
> + *buf |= (vmem16[(y * 8 + i) * xres + x] ?
> + 1 : 0) << i;
> buf++;
> }
> }
> diff --git a/drivers/staging/fbtft/fb_ssd1331.c b/drivers/staging/fbtft/fb_ssd1331.c
> index 383e197cf56a..4c7500991a5b 100644
> --- a/drivers/staging/fbtft/fb_ssd1331.c
> +++ b/drivers/staging/fbtft/fb_ssd1331.c
> @@ -74,7 +74,14 @@ static void write_reg8_bus8(struct fbtft_par *par, int len, ...)
> for (i = 0; i < len; i++)
> buf[i] = (u8)va_arg(args, unsigned int);
> va_end(args);
> - fbtft_par_dbg_hex(DEBUG_WRITE_REGISTER, par, par->info->device, u8, buf, len, "%s: ", __func__);
> + fbtft_par_dbg_hex(DEBUG_WRITE_REGISTER,
> + par,
> + par->info->device,
> + u8,
> + buf,
> + len,
> + "%s: ",
> + __func__);

Do it like this:

fbtft_par_dbg_hex(DEBUG_WRITE_REGISTER, par, par->info->device,
u8, buf, len, "%s: ", __func__);

> }
>
> va_start(args, len);
> diff --git a/drivers/staging/fbtft/fb_ssd1351.c b/drivers/staging/fbtft/fb_ssd1351.c
> index 1b92691ac7cc..8abee5450ca1 100644
> --- a/drivers/staging/fbtft/fb_ssd1351.c
> +++ b/drivers/staging/fbtft/fb_ssd1351.c
> @@ -126,35 +126,45 @@ static int set_gamma(struct fbtft_par *par, u32 *curves)
> for (i = 0; i < 63; i++) {
> if (i > 0 && curves[i] < 2) {
> dev_err(par->info->device,
> - "Illegal value in Grayscale Lookup Table at index %d. Must be greater than 1\n", i);
> + "Illegal value in Grayscale Lookup Table at index %d. Must be greater than 1\n",
> + i);

You would think this warning should print what's stored in curves[i].

> return -EINVAL;
> }
> acc += curves[i];
> tmp[i] = acc;
> if (acc > 180) {
> dev_err(par->info->device,
> - "Illegal value(s) in Grayscale Lookup Table. At index=%d, the accumulated value has exceeded 180\n", i);
> + "Illegal value(s) in Grayscale Lookup Table. At index=%d, the accumulated value has exceeded 180\n",
> + i);
> return -EINVAL;
> }
> }
>
> write_reg(par, 0xB8,
> - tmp[0], tmp[1], tmp[2], tmp[3], tmp[4], tmp[5], tmp[6], tmp[7],
> - tmp[8], tmp[9], tmp[10], tmp[11], tmp[12], tmp[13], tmp[14], tmp[15],
> - tmp[16], tmp[17], tmp[18], tmp[19], tmp[20], tmp[21], tmp[22], tmp[23],
> - tmp[24], tmp[25], tmp[26], tmp[27], tmp[28], tmp[29], tmp[30], tmp[31],
> - tmp[32], tmp[33], tmp[34], tmp[35], tmp[36], tmp[37], tmp[38], tmp[39],
> - tmp[40], tmp[41], tmp[42], tmp[43], tmp[44], tmp[45], tmp[46], tmp[47],
> - tmp[48], tmp[49], tmp[50], tmp[51], tmp[52], tmp[53], tmp[54], tmp[55],
> - tmp[56], tmp[57], tmp[58], tmp[59], tmp[60], tmp[61], tmp[62]);
> + tmp[0], tmp[1], tmp[2], tmp[3],
> + tmp[4], tmp[5], tmp[6], tmp[7],
> + tmp[8], tmp[9], tmp[10], tmp[11],
> + tmp[12], tmp[13], tmp[14], tmp[15],
> + tmp[16], tmp[17], tmp[18], tmp[19],
> + tmp[20], tmp[21], tmp[22], tmp[23],
> + tmp[24], tmp[25], tmp[26], tmp[27],
> + tmp[28], tmp[29], tmp[30], tmp[31],
> + tmp[32], tmp[33], tmp[34], tmp[35],
> + tmp[36], tmp[37], tmp[38], tmp[39],
> + tmp[40], tmp[41], tmp[42], tmp[43],
> + tmp[44], tmp[45], tmp[46], tmp[47],
> + tmp[48], tmp[49], tmp[50], tmp[51],
> + tmp[52], tmp[53], tmp[54], tmp[55],
> + tmp[56], tmp[57], tmp[58], tmp[59],
> + tmp[60], tmp[61], tmp[62]);
>
> return 0;
> }
>
> static int blank(struct fbtft_par *par, bool on)
> {
> - fbtft_par_dbg(DEBUG_BLANK, par, "%s(blank=%s)\n",
> - __func__, on ? "true" : "false");
> + fbtft_par_dbg(DEBUG_BLANK, par, "(%s=%s)\n",
> + __func__, on ? "true" : "false");

The message change is unrelated.

> if (on)
> write_reg(par, 0xAE);
> else
> @@ -185,8 +195,8 @@ static int update_onboard_backlight(struct backlight_device *bd)
> bool on;
>
> fbtft_par_dbg(DEBUG_BACKLIGHT, par,
> - "%s: power=%d, fb_blank=%d\n",
> - __func__, bd->props.power, bd->props.fb_blank);
> + "%s: power=%d, fb_blank=%d\n",
> + __func__, bd->props.power, bd->props.fb_blank);
>
> on = (bd->props.power == FB_BLANK_UNBLANK) &&
> (bd->props.fb_blank == FB_BLANK_UNBLANK);
> @@ -209,7 +219,10 @@ static void register_onboard_backlight(struct fbtft_par *par)
> bl_props.power = FB_BLANK_POWERDOWN;
>
> bd = backlight_device_register(dev_driver_string(par->info->device),
> - par->info->device, par, &bl_ops, &bl_props);
> + par->info->device,
> + par,
> + &bl_ops,
> + &bl_props);
> if (IS_ERR(bd)) {
> dev_err(par->info->device,
> "cannot register backlight device (%ld)\n",
> diff --git a/drivers/staging/fbtft/fb_st7735r.c b/drivers/staging/fbtft/fb_st7735r.c
> index e24af0a7f2de..c8e94f388ce5 100644
> --- a/drivers/staging/fbtft/fb_st7735r.c
> +++ b/drivers/staging/fbtft/fb_st7735r.c
> @@ -130,8 +130,10 @@ static int set_var(struct fbtft_par *par)
>
> /*
> * Gamma string format:
> - * VRF0P VOS0P PK0P PK1P PK2P PK3P PK4P PK5P PK6P PK7P PK8P PK9P SELV0P SELV1P SELV62P SELV63P
> - * VRF0N VOS0N PK0N PK1N PK2N PK3N PK4N PK5N PK6N PK7N PK8N PK9N SELV0N SELV1N SELV62N SELV63N
> + * VRF0P VOS0P PK0P PK1P PK2P PK3P PK4P
> + * PK5P PK6P PK7P PK8P PK9P SELV0P SELV1P SELV62P SELV63P
> + * VRF0N VOS0N PK0N PK1N PK2N PK3N PK4N
> + * PK5N PK6N PK7N PK8N PK9N SELV0N SELV1N SELV62N SELV63N
> */
> #define CURVE(num, idx) curves[(num) * par->gamma.num_values + (idx)]
> static int set_gamma(struct fbtft_par *par, u32 *curves)
> @@ -145,13 +147,18 @@ static int set_gamma(struct fbtft_par *par, u32 *curves)
>
> for (i = 0; i < par->gamma.num_curves; i++)
> write_reg(par, 0xE0 + i,
> - CURVE(i, 0), CURVE(i, 1), CURVE(i, 2), CURVE(i, 3),
> - CURVE(i, 4), CURVE(i, 5), CURVE(i, 6), CURVE(i, 7),
> - CURVE(i, 8), CURVE(i, 9), CURVE(i, 10), CURVE(i, 11),
> - CURVE(i, 12), CURVE(i, 13), CURVE(i, 14), CURVE(i, 15));
> + CURVE(i, 0), CURVE(i, 1),
> + CURVE(i, 2), CURVE(i, 3),
> + CURVE(i, 4), CURVE(i, 5),
> + CURVE(i, 6), CURVE(i, 7),
> + CURVE(i, 8), CURVE(i, 9),
> + CURVE(i, 10), CURVE(i, 11),
> + CURVE(i, 12), CURVE(i, 13),
> + CURVE(i, 14), CURVE(i, 15));
>
> return 0;
> }
> +
> #undef CURVE
>
> static struct fbtft_display display = {
> diff --git a/drivers/staging/fbtft/fb_st7789v.c b/drivers/staging/fbtft/fb_st7789v.c
> index 7d7573a7b615..3c3f387936e8 100644
> --- a/drivers/staging/fbtft/fb_st7789v.c
> +++ b/drivers/staging/fbtft/fb_st7789v.c
> @@ -201,13 +201,12 @@ static int set_gamma(struct fbtft_par *par, u32 *curves)
> c = i * par->gamma.num_values;
> for (j = 0; j < par->gamma.num_values; j++)
> curves[c + j] &= gamma_par_mask[j];
> - write_reg(
> - par, PVGAMCTRL + i,
> - curves[c + 0], curves[c + 1], curves[c + 2],
> - curves[c + 3], curves[c + 4], curves[c + 5],
> - curves[c + 6], curves[c + 7], curves[c + 8],
> - curves[c + 9], curves[c + 10], curves[c + 11],
> - curves[c + 12], curves[c + 13]);
> + write_reg(par, PVGAMCTRL + i,
> + curves[c + 0], curves[c + 1], curves[c + 2],
> + curves[c + 3], curves[c + 4], curves[c + 5],
> + curves[c + 6], curves[c + 7], curves[c + 8],
> + curves[c + 9], curves[c + 10], curves[c + 11],
> + curves[c + 12], curves[c + 13]);
> }
> return 0;
> }
> diff --git a/drivers/staging/fbtft/fb_watterott.c b/drivers/staging/fbtft/fb_watterott.c
> index 9d5979b3cfb8..47ed8b9c5020 100644
> --- a/drivers/staging/fbtft/fb_watterott.c
> +++ b/drivers/staging/fbtft/fb_watterott.c
> @@ -46,7 +46,8 @@ static void write_reg8_bus8(struct fbtft_par *par, int len, ...)
> va_end(args);
>
> fbtft_par_dbg_hex(DEBUG_WRITE_REGISTER, par,
> - par->info->device, u8, par->buf, len, "%s: ", __func__);
> + par->info->device, u8, par->buf,
> + len, "%s: ", __func__);
>
> ret = par->fbtftops.write(par, par->buf, len);
> if (ret < 0) {
> @@ -174,8 +175,9 @@ static int init_display(struct fbtft_par *par)
> write_reg(par, 0x00);
>
> version = firmware_version(par);
> - fbtft_par_dbg(DEBUG_INIT_DISPLAY, par, "Firmware version: %x.%02x\n",
> - version >> 8, version & 0xFF);
> + fbtft_par_dbg(DEBUG_INIT_DISPLAY, par,
> + "Firmware version: %x.%02x\n",
> + version >> 8, version & 0xFF);
>
> if (mode == 332)
> par->fbtftops.write_vmem = write_vmem_8bit;
> @@ -226,9 +228,9 @@ static int backlight_chip_update_status(struct backlight_device *bd)
> int brightness = bd->props.brightness;
>
> fbtft_par_dbg(DEBUG_BACKLIGHT, par,
> - "%s: brightness=%d, power=%d, fb_blank=%d\n",
> - __func__, bd->props.brightness, bd->props.power,
> - bd->props.fb_blank);
> + "%s: brightness=%d, power=%d, fb_blank=%d\n",
> + __func__, bd->props.brightness, bd->props.power,
> + bd->props.fb_blank);
>
> if (bd->props.power != FB_BLANK_UNBLANK)
> brightness = 0;
> @@ -256,7 +258,8 @@ static void register_chip_backlight(struct fbtft_par *par)
> bl_props.brightness = DEFAULT_BRIGHTNESS;
>
> bd = backlight_device_register(dev_driver_string(par->info->device),
> - par->info->device, par, &bl_ops, &bl_props);
> + par->info->device, par,
> + &bl_ops, &bl_props);
> if (IS_ERR(bd)) {
> dev_err(par->info->device,
> "cannot register backlight device (%ld)\n",
> diff --git a/drivers/staging/fbtft/fbtft-bus.c b/drivers/staging/fbtft/fbtft-bus.c
> index 871b307d83cb..5c768c658258 100644
> --- a/drivers/staging/fbtft/fbtft-bus.c
> +++ b/drivers/staging/fbtft/fbtft-bus.c
> @@ -79,7 +79,8 @@ void fbtft_write_reg8_bus9(struct fbtft_par *par, int len, ...)
> *(((u8 *)buf) + i) = (u8)va_arg(args, unsigned int);
> va_end(args);
> fbtft_par_dbg_hex(DEBUG_WRITE_REGISTER, par,
> - par->info->device, u8, buf, len, "%s: ", __func__);
> + par->info->device, u8, buf, len, "%s: ",
> + __func__);
> }
> if (len <= 0)
> return;
> @@ -129,7 +130,7 @@ int fbtft_write_vmem16_bus8(struct fbtft_par *par, size_t offset, size_t len)
> size_t startbyte_size = 0;
>
> fbtft_par_dbg(DEBUG_WRITE_VMEM, par, "%s(offset=%zu, len=%zu)\n",
> - __func__, offset, len);
> + __func__, offset, len);
>
> remain = len / 2;
> vmem16 = (u16 *)(par->info->screen_buffer + offset);
> @@ -153,8 +154,10 @@ int fbtft_write_vmem16_bus8(struct fbtft_par *par, size_t offset, size_t len)
>
> while (remain) {
> to_copy = min(tx_array_size, remain);
> - dev_dbg(par->info->device, " to_copy=%zu, remain=%zu\n",
> - to_copy, remain - to_copy);
> + dev_dbg(par->info->device,
> + "to_copy=%zu, remain=%zu\n",
> + to_copy,
> + remain - to_copy);

I haven't commented on all these, but I'm hoping that you will redo
them all, yeah?

dev_dbg(par->info->device, "to_copy=%zu, remain=%zu\n",
to_copy, remain - to_copy);

>
> for (i = 0; i < to_copy; i++)
> txbuf16[i] = cpu_to_be16(vmem16[i]);
> @@ -183,7 +186,7 @@ int fbtft_write_vmem16_bus9(struct fbtft_par *par, size_t offset, size_t len)
> int ret = 0;
>
> fbtft_par_dbg(DEBUG_WRITE_VMEM, par, "%s(offset=%zu, len=%zu)\n",
> - __func__, offset, len);
> + __func__, offset, len);
>
> if (!par->txbuf.buf) {
> dev_err(par->info->device, "%s: txbuf.buf is NULL\n", __func__);
> @@ -197,8 +200,10 @@ int fbtft_write_vmem16_bus9(struct fbtft_par *par, size_t offset, size_t len)
>
> while (remain) {
> to_copy = min(tx_array_size, remain);
> - dev_dbg(par->info->device, " to_copy=%zu, remain=%zu\n",
> - to_copy, remain - to_copy);
> + dev_dbg(par->info->device,
> + "to_copy=%zu, remain=%zu\n",
> + to_copy,
> + remain - to_copy);
>
> #ifdef __LITTLE_ENDIAN
> for (i = 0; i < to_copy; i += 2) {
> @@ -233,7 +238,7 @@ int fbtft_write_vmem16_bus16(struct fbtft_par *par, size_t offset, size_t len)
> u16 *vmem16;
>
> fbtft_par_dbg(DEBUG_WRITE_VMEM, par, "%s(offset=%zu, len=%zu)\n",
> - __func__, offset, len);
> + __func__, offset, len);
>
> vmem16 = (u16 *)(par->info->screen_buffer + offset);
>
> diff --git a/drivers/staging/fbtft/fbtft-core.c b/drivers/staging/fbtft/fbtft-core.c
> index 731e47149af8..4660a9f9eace 100644
> --- a/drivers/staging/fbtft/fbtft-core.c
> +++ b/drivers/staging/fbtft/fbtft-core.c
> @@ -137,8 +137,8 @@ static int fbtft_request_gpios(struct fbtft_par *par)
> flags = fbtft_request_gpios_match(par, gpio);
> if (flags != FBTFT_GPIO_NO_MATCH) {
> ret = devm_gpio_request_one(par->info->device,
> - gpio->gpio, flags,
> - par->info->device->driver->name);
> + gpio->gpio, flags,
> + par->info->device->driver->name);
> if (ret < 0) {
> dev_err(par->info->device,
> "%s: gpio_request_one('%s'=%d) failed with %d\n",
> @@ -249,8 +249,11 @@ static int fbtft_backlight_update_status(struct backlight_device *bd)
> bool polarity = par->polarity;
>
> fbtft_par_dbg(DEBUG_BACKLIGHT, par,
> - "%s: polarity=%d, power=%d, fb_blank=%d\n",
> - __func__, polarity, bd->props.power, bd->props.fb_blank);
> + "%s: polarity=%d, power=%d, fb_blank=%d\n",
> + __func__,
> + polarity,
> + bd->props.power,
> + bd->props.fb_blank);
>
> if ((bd->props.power == FB_BLANK_UNBLANK) &&
> (bd->props.fb_blank == FB_BLANK_UNBLANK))
> @@ -372,7 +375,7 @@ static void fbtft_update_display(struct fbtft_par *par, unsigned int start_line,
> if (start_line > par->info->var.yres - 1 ||
> end_line > par->info->var.yres - 1) {
> dev_warn(par->info->device,
> - "%s: start_line=%u or end_line=%u is larger than max=%d. Shouldn't happen, will do full display update\n",
> + "%s: start_line=%u or end_line=%u is larger than max=%d. Shouldn't happen, will do full display update\n",
> __func__, start_line,
> end_line, par->info->var.yres - 1);
> start_line = 0;
> @@ -538,8 +541,11 @@ static unsigned int chan_to_field(unsigned int chan, struct fb_bitfield *bf)
> return chan << bf->offset;
> }
>
> -static int fbtft_fb_setcolreg(unsigned int regno, unsigned int red, unsigned int green,
> - unsigned int blue, unsigned int transp,
> +static int fbtft_fb_setcolreg(unsigned int regno,
> + unsigned int red,
> + unsigned int green,
> + unsigned int blue,
> + unsigned int transp,
> struct fb_info *info)
> {
> unsigned int val;
> @@ -818,7 +824,9 @@ struct fb_info *fbtft_framebuffer_alloc(struct fbtft_display *display,
>
> if (par->gamma.curves && gamma) {
> if (fbtft_gamma_parse_str(par,
> - par->gamma.curves, gamma, strlen(gamma)))
> + par->gamma.curves,
> + gamma,
> + strlen(gamma)))
> goto alloc_fail;
> }
>
> @@ -1045,8 +1053,8 @@ static int fbtft_init_display_dt(struct fbtft_par *par)
> while (p && !(val & 0xFFFF0000)) {
> if (i > 63) {
> dev_err(par->info->device,
> - "%s: Maximum register values exceeded\n",
> - __func__);
> + "%s: Maximum register values exceeded\n",
> + __func__);
> return -EINVAL;
> }
> buf[i++] = val;
> @@ -1166,8 +1174,8 @@ int fbtft_init_display(struct fbtft_par *par)
> while (par->init_sequence[i] >= 0) {
> if (j > 63) {
> dev_err(par->info->device,
> - "%s: Maximum register values exceeded\n",
> - __func__);
> + "%s: Maximum register values exceeded\n",
> + __func__);
> return -EINVAL;
> }
> buf[j++] = par->init_sequence[i++];
> @@ -1193,19 +1201,22 @@ int fbtft_init_display(struct fbtft_par *par)
> case -2:
> i++;
> fbtft_par_dbg(DEBUG_INIT_DISPLAY, par,
> - "init: mdelay(%d)\n", par->init_sequence[i]);
> + "init: mdelay(%d)\n",
> + par->init_sequence[i]);
> mdelay(par->init_sequence[i++]);
> break;
> default:
> dev_err(par->info->device,
> "unknown delimiter %d at position %d\n",
> - par->init_sequence[i], i);
> + par->init_sequence[i],
> + i);
> return -EINVAL;
> }
> }
>
> dev_err(par->info->device,
> - "%s: something is wrong. Shouldn't get here.\n", __func__);
> + "%s: something is wrong. Shouldn't get here.\n",
> + __func__);
> return -EINVAL;
> }
> EXPORT_SYMBOL(fbtft_init_display);
> @@ -1225,8 +1236,9 @@ static int fbtft_verify_gpios(struct fbtft_par *par)
>
> fbtft_par_dbg(DEBUG_VERIFY_GPIOS, par, "%s()\n", __func__);
>
> - if (pdata->display.buswidth != 9 && par->startbyte == 0 &&
> - par->gpio.dc < 0) {
> + if (pdata->display.buswidth != 9 &&
> + par->startbyte == 0 &&
> + par->gpio.dc < 0) {
> dev_err(par->info->device,
> "Missing info about 'dc' gpio. Aborting.\n");
> return -EINVAL;
> @@ -1321,7 +1333,8 @@ static struct fbtft_platform_data *fbtft_probe_dt(struct device *dev)
> * Return: 0 if successful, negative if error
> */
> int fbtft_probe_common(struct fbtft_display *display,
> - struct spi_device *sdev, struct platform_device *pdev)
> + struct spi_device *sdev,
> + struct platform_device *pdev)
> {
> struct device *dev;
> struct fb_info *info;
> @@ -1393,11 +1406,13 @@ int fbtft_probe_common(struct fbtft_display *display,
> par->spi->bits_per_word = 9;
> } else {
> dev_warn(&par->spi->dev,
> - "9-bit SPI not available, emulating using 8-bit.\n");
> + "9-bit SPI not available, emulating using 8-bit.\n");
> /* allocate buffer with room for dc bits */
> par->extra = devm_kzalloc(par->info->device,
> - par->txbuf.len + (par->txbuf.len / 8) + 8,
> - GFP_KERNEL);
> + par->txbuf.len
> + + (par->txbuf.len / 8)
> + + 8,
> + GFP_KERNEL);

I feel like this is not a readability improvement.

> if (!par->extra) {
> ret = -ENOMEM;
> goto out_release;
> diff --git a/drivers/staging/fbtft/fbtft-sysfs.c b/drivers/staging/fbtft/fbtft-sysfs.c
> index 712096659aa0..8327f8f26ab1 100644
> --- a/drivers/staging/fbtft/fbtft-sysfs.c
> +++ b/drivers/staging/fbtft/fbtft-sysfs.c
> @@ -126,7 +126,9 @@ static ssize_t store_gamma_curve(struct device *device,
>
> mutex_lock(&par->gamma.lock);
> memcpy(par->gamma.curves, tmp_curves,
> - par->gamma.num_curves * par->gamma.num_values * sizeof(tmp_curves[0]));
> + par->gamma.num_curves
> + * par->gamma.num_values
> + * sizeof(tmp_curves[0]));

The operator goes on the first line:

memcpy(par->gamma.curves, tmp_curves,
par->gamma.num_curves * par->gamma.num_values *
sizeof(tmp_curves[0]));

But really, the original is probably best. Just go over the 80 character
limit if it improve readability.

regards,
dan carpenter

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