Merge branches 'clockevents/4.4-fixes' and 'clockevents/4.5-fixes' of http://git.linaro.org/people/daniel.lezcano/linux into timers/urgent

Pull in fixes from Daniel Lezcano:

 - Fix the vt8500 timer leading to a system lock up when dealing with too
   small delta (Roman Volkov)

 - Select the CLKSRC_MMIO when the fsl_ftm_timer is enabled with COMPILE_TEST
   (Daniel Lezcano)

 - Prevent to compile timers using the 'iomem' API when the architecture has
   not HAS_IOMEM set (Richard Weinberger)

1 files changed, 4 insertions, 1 deletions

diff --git a/drivers/gpu/drm/amd/amdgpu/dce_v8_0.c b/drivers/gpu/drm/amd/amdgpu/dce_v8_0.c
index 4f7b49a6dc50..42d954dc436d 100644
--- a/drivers/gpu/drm/amd/amdgpu/dce_v8_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/dce_v8_0.c
@@ -1193,7 +1193,7 @@ static void dce_v8_0_program_watermarks(struct amdgpu_device *adev,
         u32 pixel_period;
         u32 line_time = 0;
         u32 latency_watermark_a = 0, latency_watermark_b = 0;
-        u32 tmp, wm_mask;
+        u32 tmp, wm_mask, lb_vblank_lead_lines = 0;
 
         if (amdgpu_crtc->base.enabled && num_heads && mode) {
                 pixel_period = 1000000 / (u32)mode->clock;
@@ -1276,6 +1276,7 @@ static void dce_v8_0_program_watermarks(struct amdgpu_device *adev,
                     (adev->mode_info.disp_priority == 2)) {
                         DRM_DEBUG_KMS("force priority to high\n");
                 }
+                lb_vblank_lead_lines = DIV_ROUND_UP(lb_size, mode->crtc_hdisplay);
         }
 
         /* select wm A */
@@ -1302,6 +1303,8 @@ static void dce_v8_0_program_watermarks(struct amdgpu_device *adev,
         amdgpu_crtc->line_time = line_time;
         amdgpu_crtc->wm_high = latency_watermark_a;
         amdgpu_crtc->wm_low = latency_watermark_b;
+        /* Save number of lines the linebuffer leads before the scanout */
+        amdgpu_crtc->lb_vblank_lead_lines = lb_vblank_lead_lines;
 }
 
 /**