From c96521eebc24d49eb109013dcdae08c0c37e4f1e Mon Sep 17 00:00:00 2001 From: Chris Wilson Date: Sun, 27 Nov 2016 17:09:10 +0000 Subject: [PATCH] drm: Fix shift operations for drm_fb_helper::drm_target_preferred() smatch correctly warns: drivers/gpu/drm/drm_fb_helper.c:1960 drm_target_preferred() warn: should '1 << i' be a 64 bit type? drivers/gpu/drm/drm_fb_helper.c:2001 drm_target_preferred() warn: should '1 << i' be a 64 bit type? Signed-off-by: Chris Wilson Signed-off-by: Daniel Vetter --- drivers/gpu/drm/drm_fb_helper.c | 13 +++++++------ 1 file changed, 7 insertions(+), 6 deletions(-) diff --git a/drivers/gpu/drm/drm_fb_helper.c b/drivers/gpu/drm/drm_fb_helper.c index 14547817566d..1f26634f53d8 100644 --- a/drivers/gpu/drm/drm_fb_helper.c +++ b/drivers/gpu/drm/drm_fb_helper.c @@ -1959,19 +1959,20 @@ static bool drm_target_preferred(struct drm_fb_helper *fb_helper, bool *enabled, int width, int height) { struct drm_fb_helper_connector *fb_helper_conn; - int i; - uint64_t conn_configured = 0, mask; + const u64 mask = BIT_ULL(fb_helper->connector_count) - 1; + u64 conn_configured = 0; int tile_pass = 0; - mask = (1 << fb_helper->connector_count) - 1; + int i; + retry: for (i = 0; i < fb_helper->connector_count; i++) { fb_helper_conn = fb_helper->connector_info[i]; - if (conn_configured & (1 << i)) + if (conn_configured & BIT_ULL(i)) continue; if (enabled[i] == false) { - conn_configured |= (1 << i); + conn_configured |= BIT_ULL(i); continue; } @@ -2012,7 +2013,7 @@ static bool drm_target_preferred(struct drm_fb_helper *fb_helper, } DRM_DEBUG_KMS("found mode %s\n", modes[i] ? modes[i]->name : "none"); - conn_configured |= (1 << i); + conn_configured |= BIT_ULL(i); } if ((conn_configured & mask) != mask) { -- 2.45.2