drm/fb: small cleanup

Flip conditional to reduce indentation level of rest of fxn, and use
min/max to make the code clearer.

v2: surface_width -> surface_height typo

Signed-off-by: Rob Clark <robdclark@gmail.com>
Reviewed-by: Daniel Kurtz <djkurtz@chromium.org>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

1 files changed, 15 insertions, 13 deletions

diff --git a/drivers/gpu/drm/drm_fb_helper.c b/drivers/gpu/drm/drm_fb_helper.c
index 1e6a0c760c5d..dca98a40a550 100644
--- a/drivers/gpu/drm/drm_fb_helper.c
+++ b/drivers/gpu/drm/drm_fb_helper.c
@@ -1035,22 +1035,24 @@ static int drm_fb_helper_single_fb_probe(struct drm_fb_helper *fb_helper,
         for (i = 0; i < fb_helper->crtc_count; i++) {
                 struct drm_display_mode *desired_mode;
                 int x, y;
+
                 desired_mode = fb_helper->crtc_info[i].desired_mode;
+
+                if (!desired_mode)
+                        continue;
+
+                crtc_count++;
+
                 x = fb_helper->crtc_info[i].x;
                 y = fb_helper->crtc_info[i].y;
-                if (desired_mode) {
-                        if (gamma_size == 0)
-                                gamma_size = fb_helper->crtc_info[i].mode_set.crtc->gamma_size;
-                        if (desired_mode->hdisplay + x < sizes.fb_width)
-                                sizes.fb_width = desired_mode->hdisplay + x;
-                        if (desired_mode->vdisplay + y < sizes.fb_height)
-                                sizes.fb_height = desired_mode->vdisplay + y;
-                        if (desired_mode->hdisplay + x > sizes.surface_width)
-                                sizes.surface_width = desired_mode->hdisplay + x;
-                        if (desired_mode->vdisplay + y > sizes.surface_height)
-                                sizes.surface_height = desired_mode->vdisplay + y;
-                        crtc_count++;
-                }
+
+                if (gamma_size == 0)
+                        gamma_size = fb_helper->crtc_info[i].mode_set.crtc->gamma_size;
+
+                sizes.surface_width  = max_t(u32, desired_mode->hdisplay + x, sizes.surface_width);
+                sizes.surface_height = max_t(u32, desired_mode->vdisplay + y, sizes.surface_height);
+                sizes.fb_width  = min_t(u32, desired_mode->hdisplay + x, sizes.fb_width);
+                sizes.fb_height = min_t(u32, desired_mode->vdisplay + y, sizes.fb_height);
         }
 
         if (crtc_count == 0 || sizes.fb_width == -1 || sizes.fb_height == -1) {