From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-pl1-f174.google.com (mail-pl1-f174.google.com [209.85.214.174]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id A6DAC3AD529 for ; Wed, 19 Aug 2026 15:12:26 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.214.174 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1787152347; cv=none; b=AMomdqBlNjVGmmeg5Wa+iWJ+HfezG7pzO0BUzDkFPbYHsLQnB/kLgnMhvyuxG8lzah3CTGGvi+e/9BeBSuIV4XPsI9Op+4ahgk+0ZcT+kFpMCtlcjKOJG8EcsTA9CiGKPu5xcsMl0hSjzzTAmRiHyYnLvzzulu/KliX/e7S9HCY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1787152347; c=relaxed/simple; bh=kvXFcIXvYfZQ1I6XS9zQhvXF4NW6vUnZTKuypsp4I3s=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=uFB/lxMcRTYMB0Rbd6pEKLxkoNz+ZXeCuB02kTLGiecJ+9tHR4W02dqX9DZ0RJtZpLB23HNeoS25q+ZzY8liSeZLjgLiAcwSjTMAnpkSbweeld1UfPVG6Bi9Z7xuaDtL0BeYvxTtvpXCQnoA/WE3NLzW1zZ2WskvJysGHAbJz+U= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=S/rV+UBm; arc=none smtp.client-ip=209.85.214.174 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="S/rV+UBm" Received: by mail-pl1-f174.google.com with SMTP id d9443c01a7336-2d53197d8b5so11060465ad.3 for ; Wed, 19 Aug 2026 08:12:26 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20251104; t=1787152346; x=1787757146; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:from:to:cc:subject:date:message-id:reply-to:content-type; bh=qXxMT626CxIJxNtnvKadUbkm5J1eV87PtyZPkHVWvbs=; b=S/rV+UBmCTbCh0RR2nvBXWf143xAhXxKSAWhIT6SH6zQZhxXXPBYk9d2edz5IX1rg3 1W7UMfcEAhgCzBxR8RLIikqtGfYf1yZGkV2hr0TOQ0YePKEgNeNULTjMclil8dLSxmFw 4pTi/0AFGaAuBjN6fGbyqXldCocDMIZEkOslCAMd9qY6pzh2WYhiqYlI93V48hL/L7Xe lBxz8bdMjSOyox9gyncbJpp6CIobW6jUoTsM4y7CZ6w/aFjwl//7JYTdPhC5SUsNwYsD az184tZbreMOpr2Ok2HyxUA2uI8WJ4jVCkaoyhBxRH6tDHTl/MBYB8lrTYyRFAj+qOtX HzBQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1787152346; x=1787757146; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:x-gm-gg:x-gm-message-state:from:to:cc:subject:date :message-id:reply-to:content-type; bh=qXxMT626CxIJxNtnvKadUbkm5J1eV87PtyZPkHVWvbs=; b=QC7AniZLswoHNcJq/sveF5ISmheucyvdzYG7ZhIyujU+GWzSQL6jnZXF6FN/Znfvg3 yX+t5B8Bhn3v2e1VDGs1FTHenixUi/c49Ir9QTuad7xCg3sxVt2Qe9GTP5NLVRiDXz/F LY9TGmaFy85RLqXMfkZz880cy703nCPF7kd7Mi8svlww8hA/23cfS1Jbb74jsSDCAxt8 G+duSdoLZaCqhpkcuxBhoSAsxTYlqYCLRET8zdDutZNSRtNPxBJGKIYvObOMz7us/Zk6 GPV9wakQG0hnYsVfPT/fcIImx9MLVeSJ3UAQ/+zOINglZtSJ3HITpBHt7eDyPKLk0mt/ cWkw== X-Forwarded-Encrypted: i=1; AHgh+RrAwPmB3HZUQtAhwYXiyd7/i0ppKGFxLzVrjcJOd99U3/x2wCaptRIJEOOhc3LEJDXDj4DxLFuyCaX1lj0=@vger.kernel.org X-Gm-Message-State: AOJu0YzGZsJUnCSkj0i065orzCgACPW+/Tt6KtHzjLOmG80m+SfZBKxv DfEXsfQ7VMtDw3Z5ULy1gNU4NCnGYcHUYddXrTXCJlCnot/lbNqSkC1p X-Gm-Gg: AR+sD13aMeDFMVWPydbKfYAfrpv6EdAVQ7hmwkD3ZkC7EWDA71dxRxx3tQ0NwdsrGmf 5Ho+1h920uVCXqZA6ygoiDy2LbjERXze6m/4EI0BxugPicvj7fiji29LHZGNajArx7NZeWawdr7 E5ZdiSDT6vTwue4G7h0RRRsfYfdCjPvYjzGtkRWsW+532EqwPuATxVOBz457S2NCbaTPixmjHTE iS411mvnQomt4O9K/62fpt55DmJrVSyRssMui5LqTJSqjHsyjjLCx5pOm9TgvPI+4m+uDvvjnMj W/Iq3cMizru6r0pZ5kE25DuJj9XbWEfNKxfkD+Bl3L6ZHanwdJEamhA62wGrYGDed+mHziEIGG6 L9Ib9w6RrlbtnvGoIZ3p9uaEzYbg24a7K7uL8dMec5+J/s6w0gG6kPRLiRTkX3YIRmmYqt9aRlP 6NFYkQOqShdAPDlkA6GPJy4N/HgSkGlWr+5S6SZbN2Zk/gXcyqiOSEZOA6lRelOVuuT4SQ4Gaul 8IKmVni4sC3xPIqs3t0bhXDCDhdOBanQYXwDXm2aXm/aB7VirBzUYHOLw== X-Received: by 2002:a17:902:da85:b0:2cf:ba10:6d6 with SMTP id d9443c01a7336-2d5fd6910b3mr95763645ad.4.1787152345810; Wed, 19 Aug 2026 08:12:25 -0700 (PDT) Received: from LAPTOP-M4N25KQ5.tail73068d.ts.net (1-160-197-194.dynamic-ip.hinet.net. [1.160.197.194]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-2d5c1e91356sm25236125ad.59.2026.08.19.08.12.21 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 19 Aug 2026 08:12:25 -0700 (PDT) From: Sean Chang To: Andrzej Hajda , Neil Armstrong , Robert Foss , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Simona Vetter Cc: Laurent Pinchart , Jonas Karlman , Jernej Skrabec , Luca Ceresoli , Liu Ying , Jani Nikula , Shengjiu Wang , Javier Martinez Canillas , dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, Sean Chang Subject: [PATCH v1] drm: bridge: dw_hdmi: Fix constant truncation warning on phy_mask Date: Wed, 19 Aug 2026 23:12:16 +0800 Message-ID: <20260819151216.56833-1-seanwascoding@gmail.com> X-Mailer: git-send-email 2.43.0 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit In dw_hdmi_probe(), casting the bitwise complement of (HDMI_PHY_HPD | HDMI_PHY_RX_SENSE) directly to u8 triggers a compiler warning (-Wconstant-conversion). Due to C integer promotion rules, the bitwise OR and bitwise NOT are evaluated as 32-bit signed integers, producing 0xFFFFFF0D before being cast down to u8. Fix this by explicitly masking the inverted 32-bit result with 0xFF to keep only the lower byte and prevent implicit upper-bit truncation. Signed-off-by: Sean Chang --- drivers/gpu/drm/bridge/synopsys/dw-hdmi.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c index 34c5f583e910..937d61c42b58 100644 --- a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c +++ b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c @@ -3353,7 +3353,7 @@ struct dw_hdmi *dw_hdmi_probe(struct platform_device *pdev, hdmi->channels = 2; hdmi->disabled = true; hdmi->rxsense = true; - hdmi->phy_mask = (u8)~(HDMI_PHY_HPD | HDMI_PHY_RX_SENSE); + hdmi->phy_mask = ~(HDMI_PHY_HPD | HDMI_PHY_RX_SENSE) & 0xff; hdmi->mc_clkdis = 0x7f; hdmi->last_connector_result = connector_status_disconnected; -- 2.43.0