OMAPDSS: skip pclk check for WB mem2mem
When doing mem-to-mem writeback, there's no pixelclock. However, the
code that calculates scaling factors check that there is a pixel clock.
We can just skip the check when doing mem-to-mem writeback.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
diff --git a/drivers/video/fbdev/omap2/dss/dispc.c b/drivers/video/fbdev/omap2/dss/dispc.c
index 3cd78dc..837b1f5 100644
--- a/drivers/video/fbdev/omap2/dss/dispc.c
+++ b/drivers/video/fbdev/omap2/dss/dispc.c
@@ -2477,7 +2477,7 @@
if (width == out_width && height == out_height)
return 0;
- if (pclk == 0 || mgr_timings->pixelclock == 0) {
+ if (!mem_to_mem && (pclk == 0 || mgr_timings->pixelclock == 0)) {
DSSERR("cannot calculate scaling settings: pclk is zero\n");
return -EINVAL;
}