From 09dfa5b8ba1a38050e4e95faab1cf07c6a509dad Mon Sep 17 00:00:00 2001 From: Sandor Yu Date: Fri, 19 Jun 2020 16:05:42 +0800 Subject: [PATCH 06/49] LF-1512: drm: cdns mhdp: avoid potentially overflowing covert to unsigned 64 bits to avoid potentially overflowing. Report by Coverity ID 6652952 6652952. Signed-off-by: Sandor Yu Reviewed-by: Fancy Fang --- drivers/gpu/drm/bridge/cadence/cdns-mhdp-common.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/bridge/cadence/cdns-mhdp-common.c b/drivers/gpu/drm/bridge/cadence/cdns-mhdp-common.c index 9c0a2668e494..890add9b7c67 100644 --- a/drivers/gpu/drm/bridge/cadence/cdns-mhdp-common.c +++ b/drivers/gpu/drm/bridge/cadence/cdns-mhdp-common.c @@ -657,7 +657,7 @@ int cdns_mhdp_config_video(struct cdns_mhdp_device *mhdp) */ do { tu_size_reg += 2; - symbol = tu_size_reg * mode->clock * bit_per_pix; + symbol = (u64) tu_size_reg * mode->clock * bit_per_pix; do_div(symbol, mhdp->dp.num_lanes * link_rate * 8); rem = do_div(symbol, 1000); if (tu_size_reg > 64) { -- 2.29.2