From nobody Tue Dec 2 00:03:22 2025 Received: from mail-wm1-f42.google.com (mail-wm1-f42.google.com [209.85.128.42]) (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 262A523817D for ; Tue, 25 Nov 2025 13:52:44 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.128.42 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1764078765; cv=none; b=O5KKzQYUouo2S/ykOjsCBIZLFCcLV/G65yAYr2sHmHeFkmJliruOoNClZ/Klf9eXCsQGBToiQgkyoHPEy+fm8sPjZ5VtrlT/D+pgPfpCnXpHKwmfDlBb3LJtHUSLI/PwQPzIkEXSR62Iuy+ZCaH6QwM+8257OY1Km+rW2laKAXQ= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1764078765; c=relaxed/simple; bh=PWG/Ju6ueJtMaWTjfTOLqzyc0mzBregmNN09z6jpqv4=; h=Date:From:To:Cc:Subject:Message-ID:MIME-Version:Content-Type: Content-Disposition; b=HhTgEZiIN/86zDhLZfvgnw9vNE0WFsanOy9MJQ4iN9sZWtmK43Wo5XO/l52PUQLFHVZoW+6gEmYV+9VVYB7LHL8kvk3zyKFXSCxWsdnQH7jlTrGaUgooHSx6tR10EKUOyXJH6dWsEiVIV45MCQHeoRhWzEDoQC+Xq4iSnjqrzEs= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linaro.org; spf=pass smtp.mailfrom=linaro.org; dkim=pass (2048-bit key) header.d=linaro.org header.i=@linaro.org header.b=qxTG8X6N; arc=none smtp.client-ip=209.85.128.42 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linaro.org Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linaro.org Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=linaro.org header.i=@linaro.org header.b="qxTG8X6N" Received: by mail-wm1-f42.google.com with SMTP id 5b1f17b1804b1-47118259fd8so48665615e9.3 for ; Tue, 25 Nov 2025 05:52:43 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1764078762; x=1764683562; darn=vger.kernel.org; h=content-disposition:mime-version:message-id:subject:cc:to:from:date :from:to:cc:subject:date:message-id:reply-to; bh=5qoiP6TwSt3WsRHm0Qt9S7E0jYs8oQ+YtHQFRGroW9I=; b=qxTG8X6N4itZt/cru7Xm5SIT5h2d+Jd+5GyQApAGw84EwFRAO9FI2aNS0zkliNe9vd dtu5soYGz6/qirWGnRf8ENoy0sXvI5DPrfGoOp4ddUS3HItaQwemgia81MowU982Ib+h F7V77mcPTeGlREfxK2iRGBV5QVhRWedVTV814xrIfoOpecxQh6yij0yTJwVT7XlanzAt 7wqHT5NlZSr/hR4g0KVJiors2NokShfYFxIBtg0mizi7EG2xagTuUp8f0lFRspteuIrH MbEItjBb4qavqfcdp0Zr5Irg5ScJtgMxqP5zlTc3b0Aq4Ew81QMQDDNPaNGYiwkatGMf BoFQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1764078762; x=1764683562; h=content-disposition:mime-version:message-id:subject:cc:to:from:date :x-gm-gg:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=5qoiP6TwSt3WsRHm0Qt9S7E0jYs8oQ+YtHQFRGroW9I=; b=e7d5/JBeTtRLd1p8D8/XVrfNgbFzN39PAZ4uB5w74XeYXbc/lKzrYCybDb3rzoJg1L 8V10tRXVLfQT5FNrqeEXVCLfGVujINglBFHbbLQgOlS6beeRmU5z2SCBbDHCJoj7GlBr eKLwlHnhWfuq382SCfzwa4kJxfiZiv7YbeN9gJlnHbg8cbsw0lZ9lllxMN04OObM2ejZ Wr1cNWytZHlKUhKhfJAL6S1HWzCwU7Ob6XGX+FlrlFZlLyI+DA2AYuiYDia6MUMqwPO5 gvmlUTeO3xQSMzZBWVJ1Z84YhNCZLxHp4sg2vGWgZMu6YVArY64hrg7pbw4S6rEZhdXS wA5A== X-Forwarded-Encrypted: i=1; AJvYcCUUOBoPD1aKPGz2+rsbQEUuYsI/uavKYNvlpLbszfkxXLkNj3tL5qHk6KAfF1LkcK8kPMSnm583fXokw/I=@vger.kernel.org X-Gm-Message-State: AOJu0YzZ1m2dr5i5SXECNbOD+923krmXDhqtJQyDrTby8qySDOEV201c 9cyTIQJ4Dc1npVd+kBHGC+d083iOY3uqtl1coWH1uAsesNebyUfgAoUKJbKN3ynzmV4= X-Gm-Gg: ASbGncsWveY6aCCqQsxqmkr8JOrG77vsci62lb/DPi6qzSEvG9mIyWF8EU/2bLJk8ja VpJEmI/hx8lIRhpAFMeV7bbAkgOTR9gCynNSWDDk8xpgXyLc9zKR+a4qVyntfMD75xIoqhyqSrR eQ6agCUa0nKRhdfBkgCLwEjG+MXPrgQIOs+TiyM6M2EfKa6l6gkWCV9JQxAU8FVq0jF+y4fJKFg v8t3ttHGburSTAXVXH3vp6ufM+SMQnbOABH51YQvW5zq3tM+AFAxdltrvE/NOveE2oww7UZGTWD I7+V53sqLUTCTX56bG5+rUNMeQV1bq+SgCpQTKa280m1Pw3Y5VnT0qjStw65//RvGCThpdcgxHq EK7sRDT0Xw8PQYhvLAcoEzz2YajQ96q9REPJYUqXVGepugqOHN+BU2Ne2Psd5OzNbHSBiBTDGU5 gw+h9lYeL1CH/9esN0 X-Google-Smtp-Source: AGHT+IExMFPzaEj2t7R/V1HwC9wLFLjVdHnT+Jc3arjZhnTf+cI6vhU+qt5I6EYqSjZLnH2q9pLpiw== X-Received: by 2002:a05:600c:3545:b0:477:7ab8:aba with SMTP id 5b1f17b1804b1-47904ac3ca4mr24955445e9.1.1764078762464; Tue, 25 Nov 2025 05:52:42 -0800 (PST) Received: from localhost ([196.207.164.177]) by smtp.gmail.com with UTF8SMTPSA id 5b1f17b1804b1-477bf1f365fsm254495315e9.8.2025.11.25.05.52.41 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 25 Nov 2025 05:52:41 -0800 (PST) Date: Tue, 25 Nov 2025 16:52:39 +0300 From: Dan Carpenter To: AngeloGioacchino Del Regno Cc: Chun-Kuang Hu , Philipp Zabel , David Airlie , Simona Vetter , Matthias Brugger , CK Hu , Louis-Alexis Eyraud , dri-devel@lists.freedesktop.org, linux-mediatek@lists.infradead.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, kernel-janitors@vger.kernel.org Subject: [PATCH next] drm/mediatek: Fix platform_get_irq() error checking Message-ID: Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Disposition: inline X-Mailer: git-send-email haha only kidding Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" The platform_get_irq() function returns negative error codes on failure and positive non-zero IRQ numbers on success. It never returns NULL. Fix the error checking to look for negatives, and change "hdmi->irq" from unsigned int to just int. Fixes: 8d0f79886273 ("drm/mediatek: Introduce HDMI/DDC v2 for MT8195/MT8188= ") Signed-off-by: Dan Carpenter --- drivers/gpu/drm/mediatek/mtk_hdmi_common.c | 2 +- drivers/gpu/drm/mediatek/mtk_hdmi_common.h | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/mediatek/mtk_hdmi_common.c b/drivers/gpu/drm/m= ediatek/mtk_hdmi_common.c index e78eb0876f16..bd7f8c56ec9c 100644 --- a/drivers/gpu/drm/mediatek/mtk_hdmi_common.c +++ b/drivers/gpu/drm/mediatek/mtk_hdmi_common.c @@ -303,7 +303,7 @@ static int mtk_hdmi_dt_parse_pdata(struct mtk_hdmi *hdm= i, struct platform_device return dev_err_probe(dev, ret, "Failed to get clocks\n"); =20 hdmi->irq =3D platform_get_irq(pdev, 0); - if (!hdmi->irq) + if (hdmi->irq < 0) return hdmi->irq; =20 hdmi->regs =3D device_node_to_regmap(dev->of_node); diff --git a/drivers/gpu/drm/mediatek/mtk_hdmi_common.h b/drivers/gpu/drm/m= ediatek/mtk_hdmi_common.h index de5e064585f8..7a644bbf5843 100644 --- a/drivers/gpu/drm/mediatek/mtk_hdmi_common.h +++ b/drivers/gpu/drm/mediatek/mtk_hdmi_common.h @@ -168,7 +168,7 @@ struct mtk_hdmi { bool audio_enable; bool powered; bool enabled; - unsigned int irq; + int irq; enum hdmi_hpd_state hpd; hdmi_codec_plugged_cb plugged_cb; struct device *codec_dev; --=20 2.51.0