From: Laurent Pinchart Date: Wed, 31 Aug 2011 11:00:52 +0000 (+0200) Subject: sh_mobile_meram: Reset ICBs at unregistration time X-Git-Url: http://drtracing.org/?a=commitdiff_plain;h=da6cf5125f66ed1810616937777884cea021e66a;p=deliverable%2Flinux.git sh_mobile_meram: Reset ICBs at unregistration time When ICBs are unregistered and later reused they need to be reset to avoid data corruption. Set the WBF, WF and RF bits to make sure ICBs get reset properly. Signed-off-by: Laurent Pinchart Signed-off-by: Florian Tobias Schandinat --- diff --git a/drivers/video/sh_mobile_meram.c b/drivers/video/sh_mobile_meram.c index f63297099193..4d63490209cd 100644 --- a/drivers/video/sh_mobile_meram.c +++ b/drivers/video/sh_mobile_meram.c @@ -373,8 +373,10 @@ static void meram_deinit(struct sh_mobile_meram_priv *priv, struct sh_mobile_meram_icb *icb) { /* disable ICB */ - meram_write_icb(priv->base, icb->cache_icb, MExxCTL, 0); - meram_write_icb(priv->base, icb->marker_icb, MExxCTL, 0); + meram_write_icb(priv->base, icb->cache_icb, MExxCTL, + MExxCTL_WBF | MExxCTL_WF | MExxCTL_RF); + meram_write_icb(priv->base, icb->marker_icb, MExxCTL, + MExxCTL_WBF | MExxCTL_WF | MExxCTL_RF); icb->cache_unit = 0; }