drm/radeon: fix-up some float to fixed conversion thinkos

Spotted by Brad Smith when porting to OpenBSD.

Noticed-by: Brad Smith <brad@comstyle.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

2 files changed, 5 insertions, 19 deletions

diff --git a/drivers/gpu/drm/radeon/rs690.c b/drivers/gpu/drm/radeon/rs690.c
index 1447d794c22a..1c560629575a 100644
--- a/drivers/gpu/drm/radeon/rs690.c
+++ b/drivers/gpu/drm/radeon/rs690.c
@@ -345,9 +345,11 @@ static void rs690_crtc_bandwidth_compute(struct radeon_device *rdev,
                 if (max_bandwidth.full > rdev->pm.sideport_bandwidth.full &&
                         rdev->pm.sideport_bandwidth.full)
                         max_bandwidth = rdev->pm.sideport_bandwidth;
-                read_delay_latency.full = dfixed_const(370 * 800 * 1000);
-                read_delay_latency.full = dfixed_div(read_delay_latency,
-                        rdev->pm.igp_sideport_mclk);
+                read_delay_latency.full = dfixed_const(370 * 800);
+                a.full = dfixed_const(1000);
+                b.full = dfixed_div(rdev->pm.igp_sideport_mclk, a);
+                read_delay_latency.full = dfixed_div(read_delay_latency, b);
+                read_delay_latency.full = dfixed_mul(read_delay_latency, a);
         } else {
                 if (max_bandwidth.full > rdev->pm.k8_bandwidth.full &&
                         rdev->pm.k8_bandwidth.full)
@@ -488,14 +490,10 @@ static void rs690_compute_mode_priority(struct radeon_device *rdev,
                 }
                 if (wm0->priority_mark.full > priority_mark02.full)
                         priority_mark02.full = wm0->priority_mark.full;
-                if (dfixed_trunc(priority_mark02) < 0)
-                        priority_mark02.full = 0;
                 if (wm0->priority_mark_max.full > priority_mark02.full)
                         priority_mark02.full = wm0->priority_mark_max.full;
                 if (wm1->priority_mark.full > priority_mark12.full)
                         priority_mark12.full = wm1->priority_mark.full;
-                if (dfixed_trunc(priority_mark12) < 0)
-                        priority_mark12.full = 0;
                 if (wm1->priority_mark_max.full > priority_mark12.full)
                         priority_mark12.full = wm1->priority_mark_max.full;
                 *d1mode_priority_a_cnt = dfixed_trunc(priority_mark02);
@@ -526,8 +524,6 @@ static void rs690_compute_mode_priority(struct radeon_device *rdev,
                 }
                 if (wm0->priority_mark.full > priority_mark02.full)
                         priority_mark02.full = wm0->priority_mark.full;
-                if (dfixed_trunc(priority_mark02) < 0)
-                        priority_mark02.full = 0;
                 if (wm0->priority_mark_max.full > priority_mark02.full)
                         priority_mark02.full = wm0->priority_mark_max.full;
                 *d1mode_priority_a_cnt = dfixed_trunc(priority_mark02);
@@ -555,8 +551,6 @@ static void rs690_compute_mode_priority(struct radeon_device *rdev,
                 }
                 if (wm1->priority_mark.full > priority_mark12.full)
                         priority_mark12.full = wm1->priority_mark.full;
-                if (dfixed_trunc(priority_mark12) < 0)
-                        priority_mark12.full = 0;
                 if (wm1->priority_mark_max.full > priority_mark12.full)
                         priority_mark12.full = wm1->priority_mark_max.full;
                 *d2mode_priority_a_cnt = dfixed_trunc(priority_mark12);
diff --git a/drivers/gpu/drm/radeon/rv515.c b/drivers/gpu/drm/radeon/rv515.c
index 873eb4b193b4..5d1c316115ef 100644
--- a/drivers/gpu/drm/radeon/rv515.c
+++ b/drivers/gpu/drm/radeon/rv515.c
@@ -1155,14 +1155,10 @@ static void rv515_compute_mode_priority(struct radeon_device *rdev,
                 }
                 if (wm0->priority_mark.full > priority_mark02.full)
                         priority_mark02.full = wm0->priority_mark.full;
-                if (dfixed_trunc(priority_mark02) < 0)
-                        priority_mark02.full = 0;
                 if (wm0->priority_mark_max.full > priority_mark02.full)
                         priority_mark02.full = wm0->priority_mark_max.full;
                 if (wm1->priority_mark.full > priority_mark12.full)
                         priority_mark12.full = wm1->priority_mark.full;
-                if (dfixed_trunc(priority_mark12) < 0)
-                        priority_mark12.full = 0;
                 if (wm1->priority_mark_max.full > priority_mark12.full)
                         priority_mark12.full = wm1->priority_mark_max.full;
                 *d1mode_priority_a_cnt = dfixed_trunc(priority_mark02);
@@ -1193,8 +1189,6 @@ static void rv515_compute_mode_priority(struct radeon_device *rdev,
                 }
                 if (wm0->priority_mark.full > priority_mark02.full)
                         priority_mark02.full = wm0->priority_mark.full;
-                if (dfixed_trunc(priority_mark02) < 0)
-                        priority_mark02.full = 0;
                 if (wm0->priority_mark_max.full > priority_mark02.full)
                         priority_mark02.full = wm0->priority_mark_max.full;
                 *d1mode_priority_a_cnt = dfixed_trunc(priority_mark02);
@@ -1222,8 +1216,6 @@ static void rv515_compute_mode_priority(struct radeon_device *rdev,
                 }
                 if (wm1->priority_mark.full > priority_mark12.full)
                         priority_mark12.full = wm1->priority_mark.full;
-                if (dfixed_trunc(priority_mark12) < 0)
-                        priority_mark12.full = 0;
                 if (wm1->priority_mark_max.full > priority_mark12.full)
                         priority_mark12.full = wm1->priority_mark_max.full;
                 *d2mode_priority_a_cnt = dfixed_trunc(priority_mark12);