From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-dy1-f194.google.com (mail-dy1-f194.google.com [74.125.82.194]) (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 5E448345CCA for ; Thu, 9 Apr 2026 15:58:50 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=74.125.82.194 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1775750331; cv=none; b=m37tbWkLG8HyK4mthvMV6De3GvYZR1nMJvVUnRVexpf0YfNhGotgvUDB1npydajlSQEqPhEwoGHKTQOLPgVpHDw5y28FVaigqdotw5gltY/sWw22UjznEaSV7aSeSKlbdsTyJHWuPJF1tnxhNMTX6UQvCA32JE+73GddaUiidqY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1775750331; c=relaxed/simple; bh=4RJcvPMyl5PqcgPXvQ4VGCjMXYk/SloNlz3pAdCeCTM=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=kskLZirMRo0vy6qYO1mqywpLlCAkhMcUulNu41RGww7bAyfe8x7+jPPPpJsK5qyInNNNqqVl7Nqp7MF7Y1NO8sTxWkg5+fn+EGp8W/0y4GkmuEHk+25OLiN5MN5tFnlCQXTnWKu6LqX1CAU4Y8UOS9yW9i2ksAeD+uD2ku5liZY= 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=asxpOu5V; arc=none smtp.client-ip=74.125.82.194 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="asxpOu5V" Received: by mail-dy1-f194.google.com with SMTP id 5a478bee46e88-2c56aa62931so1542148eec.0 for ; Thu, 09 Apr 2026 08:58:50 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20251104; t=1775750329; x=1776355129; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=1XM2RE5mSvaPlHGre9Lf8kPtJSxgysytky2N//YtXII=; b=asxpOu5VXcDxRN439sXTJlxy+j1jgih0hzyit/iWfZuuDxiraSnyalO97M2C6NGenO y8ltdxFTQwmt0jtcSggm/CBtVif9FEpdc2CmWovDV7RD5W+X18+YhbC4RuaRKk6amvsM KuQadEGgCVV0HF7XnN/L1xHbr1MOCpQd1ozL4PvXz33QB8Rh6FWs4cCrQu62ZKs3TFi3 2e7mIUkffqlzI+0tptZDdA7ltMyO7bk6YUfAbEEosroowYjghtT3DFLKS0OV1vLf3fgY OyUGvNWPfkkzRDBX3hcQF3NIWdSVEEY5HbSlp/nkaqcvBtdwSTvNgSenrir5OK3YxqTg 7hgQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1775750329; x=1776355129; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-gg:x-gm-message-state:from :to:cc:subject:date:message-id:reply-to; bh=1XM2RE5mSvaPlHGre9Lf8kPtJSxgysytky2N//YtXII=; b=pNEpWpjUxrnPoEImP0vCmvEccNdXMRje+N7I61VleZtI5qjBTUKsgp+T2iM3bBqCcU qyy4vp3gJm/Gi81/VIRe5pveTHHx/LPE0FJ4cRuPY1v7iMOD8xLHMClaVo4pGwHm+KqR sUyqsTPv017zo4l1G9vaGNKGgFHj6YNfQKEAKiEjv+tjxOoyKcy2ioEHnVgt72RZPRUn 5uZ/QYa6dP1Q7nuqaJQnXUWaG9I96ywxQXN1jy4/a7IL+i7irINlYWxZQHC+z6/7lsEK kgQrxBSNm6PfeBsQKeT1fXQXR67Rhj6aY9NPmkdjN3sQwxHedsC26ICB/AQMNo9wau9x fWLA== X-Forwarded-Encrypted: i=1; AJvYcCUUxvD6wyLbQUWxuhLaINtv2amF7n1vF0eQe07flr3gz8g+PBMIBnoz8xGvPyFiQSb4jcB82UtokQj/msM=@vger.kernel.org X-Gm-Message-State: AOJu0YxwCyVAKVdHHUlek7zaLlphpsWty1Io1SOdPkK2t9wyuWdu0T1S DjTpKlyxh9BBDutV6Yl4X5tv9f3PWRf9Wycfx87A94m0ANUb2nygLQ2fSUqDRZrb X-Gm-Gg: AeBDieuDSq86ZSKEGaWS+7qbYryaw9Aku5LSGwoGFRx7uuEUHWYsVUkM21qKthHppY1 nKgbFSCd0X0zDzopSfzM9eF2vzYC0BuIKZF1Y7qnR8ZpWDDnopBZLLQ+21cX91wK/7jdOmftm9/ RRipLTuTdOUctdJIL6nP/qFdKkXUY+KDqfrkE5BQYQRGEJnNJiXqdLQIIBdqg86lFAJ+Io1mGCq sllhKpmFhYsPpIkJ5UzuLGhtX0+m7EW9GQ6uE+r/FFPpYYHS80Zsi+pXMdP/lAvgRX8Vz5xqwv3 RPkaMLUENOWWW6ju5ScdawthUet9QO2Sm2DZtCUp4T1OEnYt+uvPGBKDAz6tp6LZFH00YNAT3oY 2aAOyfHYB1kO4od+8Qf8oBxbe5oc6drWKgxwXp9NMLC81T/wjKmLFO10TV4v8PfLmO6bpHj6d9Z 2iZPZz+tCfAfiXwFWM39rYEMT9tfMX4mrLwuylbqxgXgfzTee/qIhF+mA= X-Received: by 2002:a05:7300:bc86:b0:2c5:a6ce:e534 with SMTP id 5a478bee46e88-2cbf9fe1d45mr14374181eec.8.1775750329282; Thu, 09 Apr 2026 08:58:49 -0700 (PDT) Received: from localhost.localdomain ([76.32.119.210]) by smtp.gmail.com with ESMTPSA id 5a478bee46e88-2d5621d5e43sm153746eec.21.2026.04.09.08.58.48 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 09 Apr 2026 08:58:48 -0700 (PDT) From: Hungyu Lin To: Sudip Mukherjee , Teddy Wang , Greg Kroah-Hartman Cc: linux-fbdev@vger.kernel.org, linux-staging@lists.linux.dev, linux-kernel@vger.kernel.org, Hungyu Lin Subject: [PATCH v2 2/2] staging: sm750fb: propagate error codes from de_wait() Date: Thu, 9 Apr 2026 15:58:21 +0000 Message-Id: <20260409155821.23375-3-dennylin0707@gmail.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20260409155821.23375-1-dennylin0707@gmail.com> References: <20260409155821.23375-1-dennylin0707@gmail.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit The sm750 acceleration functions currently return -1 when de_wait() fails, discarding the original error code. Since de_wait() now returns proper errno values, propagate the error code instead of returning -1. Signed-off-by: Hungyu Lin --- drivers/staging/sm750fb/sm750_accel.c | 20 +++++++++++++------- 1 file changed, 13 insertions(+), 7 deletions(-) diff --git a/drivers/staging/sm750fb/sm750_accel.c b/drivers/staging/sm750fb/sm750_accel.c index 0f94d859e91c..688ec262a8ed 100644 --- a/drivers/staging/sm750fb/sm750_accel.c +++ b/drivers/staging/sm750fb/sm750_accel.c @@ -90,14 +90,16 @@ int sm750_hw_fillrect(struct lynx_accel *accel, u32 color, u32 rop) { u32 de_ctrl; + int ret; - if (accel->de_wait() != 0) { + ret = accel->de_wait(); + if (ret) { /* - * int time wait and always busy,seems hardware + * int time wait and always busy, seems hardware * got something error */ pr_debug("De engine always busy\n"); - return -1; + return ret; } write_dpr(accel, DE_WINDOW_DESTINATION_BASE, base); /* dpr40 */ @@ -154,6 +156,7 @@ int sm750_hw_copyarea(struct lynx_accel *accel, unsigned int rop2) { unsigned int direction, de_ctrl; + int ret; direction = LEFT_TO_RIGHT; /* Direction of ROP2 operation: 1 = Left to Right, (-1) = Right to Left */ @@ -263,8 +266,9 @@ int sm750_hw_copyarea(struct lynx_accel *accel, DE_WINDOW_WIDTH_DST_MASK) | (source_pitch / Bpp & DE_WINDOW_WIDTH_SRC_MASK)); /* dpr3c */ - if (accel->de_wait() != 0) - return -1; + ret = accel->de_wait(); + if (ret) + return ret; write_dpr(accel, DE_SOURCE, ((sx << DE_SOURCE_X_K1_SHIFT) & DE_SOURCE_X_K1_MASK) | @@ -326,14 +330,16 @@ int sm750_hw_imageblit(struct lynx_accel *accel, const char *src_buf, unsigned int de_ctrl = 0; unsigned char remain[4]; int i, j; + int ret; start_bit &= 7; /* Just make sure the start bit is within legal range */ bytes_per_scan = (width + start_bit + 7) / 8; words_per_scan = bytes_per_scan & ~3; bytes_remain = bytes_per_scan & 3; - if (accel->de_wait() != 0) - return -1; + ret = accel->de_wait(); + if (ret) + return ret; /* * 2D Source Base. -- 2.34.1