drm/ssd130x: Inline the ssd130x_buf_{alloc, free}() function helpers

There is only a single caller for both helper functions and these don't do
much other than allocate and free two buffers, so let's just inline them.

Suggested-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Javier Martinez Canillas <javierm@redhat.com>
Reviewed-by: Geert Uytterhoeven <geert@linux-m68k.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20230726105433.389740-1-javierm@redhat.com

diff --git a/drivers/gpu/drm/solomon/ssd130x.c b/drivers/gpu/drm/solomon/ssd130x.c
index b4c3769..51472a1 100644 (file)
--- a/drivers/gpu/drm/solomon/ssd130x.c
+++ b/drivers/gpu/drm/solomon/ssd130x.c
@@ -146,38 +146,6 @@ static inline struct ssd130x_device *drm_to_ssd130x(struct drm_device *drm)
        return container_of(drm, struct ssd130x_device, drm);
 }
 
-static int ssd130x_buf_alloc(struct ssd130x_device *ssd130x)
-{
-       unsigned int page_height = ssd130x->device_info->page_height;
-       unsigned int pages = DIV_ROUND_UP(ssd130x->height, page_height);
-       const struct drm_format_info *fi;
-       unsigned int pitch;
-
-       fi = drm_format_info(DRM_FORMAT_R1);
-       if (!fi)
-               return -EINVAL;
-
-       pitch = drm_format_info_min_pitch(fi, 0, ssd130x->width);
-
-       ssd130x->buffer = kcalloc(pitch, ssd130x->height, GFP_KERNEL);
-       if (!ssd130x->buffer)
-               return -ENOMEM;
-
-       ssd130x->data_array = kcalloc(ssd130x->width, pages, GFP_KERNEL);
-       if (!ssd130x->data_array) {
-               kfree(ssd130x->buffer);
-               return -ENOMEM;
-       }
-
-       return 0;
-}
-
-static void ssd130x_buf_free(struct ssd130x_device *ssd130x)
-{
-       kfree(ssd130x->data_array);
-       kfree(ssd130x->buffer);
-}
-
 /*
  * Helper to write data (SSD130X_DATA) to the device.
  */
@@ -709,6 +677,10 @@ static void ssd130x_encoder_helper_atomic_enable(struct drm_encoder *encoder,
 {
        struct drm_device *drm = encoder->dev;
        struct ssd130x_device *ssd130x = drm_to_ssd130x(drm);
+       unsigned int page_height = ssd130x->device_info->page_height;
+       unsigned int pages = DIV_ROUND_UP(ssd130x->height, page_height);
+       const struct drm_format_info *fi;
+       unsigned int pitch;
        int ret;
 
        ret = ssd130x_power_on(ssd130x);
@@ -719,9 +691,21 @@ static void ssd130x_encoder_helper_atomic_enable(struct drm_encoder *encoder,
        if (ret)
                goto power_off;
 
-       ret = ssd130x_buf_alloc(ssd130x);
-       if (ret)
+       fi = drm_format_info(DRM_FORMAT_R1);
+       if (!fi)
+               goto power_off;
+
+       pitch = drm_format_info_min_pitch(fi, 0, ssd130x->width);
+
+       ssd130x->buffer = kcalloc(pitch, ssd130x->height, GFP_KERNEL);
+       if (!ssd130x->buffer)
+               goto power_off;
+
+       ssd130x->data_array = kcalloc(ssd130x->width, pages, GFP_KERNEL);
+       if (!ssd130x->data_array) {
+               kfree(ssd130x->buffer);
                goto power_off;
+       }
 
        ssd130x_write_cmd(ssd130x, 1, SSD130X_DISPLAY_ON);
 
@@ -744,7 +728,8 @@ static void ssd130x_encoder_helper_atomic_disable(struct drm_encoder *encoder,
 
        ssd130x_write_cmd(ssd130x, 1, SSD130X_DISPLAY_OFF);
 
-       ssd130x_buf_free(ssd130x);
+       kfree(ssd130x->data_array);
+       kfree(ssd130x->buffer);
 
        ssd130x_power_off(ssd130x);
 }