From 6909115442759efef3d4bc5d9c54d7943f1afc14 Mon Sep 17 00:00:00 2001 From: Junlin Yang Date: Fri, 12 Mar 2021 15:14:45 +0800 Subject: [PATCH] drm/omap: dsi: fix unsigned expression compared with zero r is "u32" always >= 0,mipi_dsi_create_packet may return little than zero. so r < 0 condition is never accessible. Fixes coccicheck warnings: ./drivers/gpu/drm/omapdrm/dss/dsi.c:2155:5-6: WARNING: Unsigned expression compared with zero: r < 0 Signed-off-by: Junlin Yang Reviewed-by: Laurent Pinchart Signed-off-by: Tomi Valkeinen Link: https://patchwork.freedesktop.org/patch/msgid/20210312071445.1721-1-angkery@163.com --- drivers/gpu/drm/omapdrm/dss/dsi.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/drivers/gpu/drm/omapdrm/dss/dsi.c b/drivers/gpu/drm/omapdrm/dss/dsi.c index 8e11612f5fe1..b31d750c425a 100644 --- a/drivers/gpu/drm/omapdrm/dss/dsi.c +++ b/drivers/gpu/drm/omapdrm/dss/dsi.c @@ -2149,11 +2149,12 @@ static int dsi_vc_send_short(struct dsi_data *dsi, int vc, const struct mipi_dsi_msg *msg) { struct mipi_dsi_packet pkt; + int ret; u32 r; - r = mipi_dsi_create_packet(&pkt, msg); - if (r < 0) - return r; + ret = mipi_dsi_create_packet(&pkt, msg); + if (ret < 0) + return ret; WARN_ON(!dsi_bus_is_locked(dsi));