Commit d86d29df authored Jul 13, 2011 by Laurent Pinchart

fbdev: sh_mobile_meram: Fix MExxCTL register save on runtime PM suspend



To reset the ICB on resume the MExxCTL register needs to be OR'ed with
MExxCTL_WBF | MExxCTL_WF | MExxCTL_RF, no set to that value. Fix this.

This fixes corruption at the bottom of the display when resuming from
runtime PM.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>

parent 7963e21e

drivers/video/sh_mobile_meram.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -549,7 +549,7 @@ static int sh_mobile_meram_runtime_suspend(struct device *dev)
		meram_read_icb(priv->base, j, icb_regs[k]);
		/* Reset ICB on resume */
		if (icb_regs[k] == MExxCTL)
		priv->icb_saved_regs[j * ICB_REGS_SIZE + k] =
		priv->icb_saved_regs[j * ICB_REGS_SIZE + k] \|=
		MExxCTL_WBF \| MExxCTL_WF \| MExxCTL_RF;
		}
		}