From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-pg1-f169.google.com (mail-pg1-f169.google.com [209.85.215.169]) (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 6DF433B5843 for ; Fri, 3 Jul 2026 10:39:00 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.215.169 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1783075141; cv=none; b=SRijfK/uploDVqH3j1UlFBTIhobTDyTAiVg924KSNMasPcILhOtmHoEMvEAtZbxk+9xdnrC4rDfC258T8oteQj+Ycv7VRU/cPE9Lpvb+eVooZrZBxl85QuG2YtVwhGwJnT02PVG5i97x7pjwO5KGUHCv+tZA+fEVLAVh3K0FKLI= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1783075141; c=relaxed/simple; bh=hHprdpG/uKKFmQbTadPUD64ZVlpwLHJlCWL3kWNDcvw=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=hv31C1YxFckE1VesZ/iHVo0PyfRZaj8Zy+y1GoEkfas5yygzx85mgjVJEJMslUTkSIw3g/3szjtgRHXmb35iwXSUo4dj+MKKEXVNuZn9hc5u5waDUDztCTkIRKJKTKgkSqzmxKI5Nsvf59Fv54qALo0npwH9VXVQEHbGsKmgcws= 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=ZbQ2eO21; arc=none smtp.client-ip=209.85.215.169 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="ZbQ2eO21" Received: by mail-pg1-f169.google.com with SMTP id 41be03b00d2f7-c9fe3c9bd5fso503893a12.0 for ; Fri, 03 Jul 2026 03:39:00 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20251104; t=1783075140; x=1783679940; 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; bh=GpVaUtcniJstsh8OFBCYgk7p2djQ5b3s9ea0tBWj/1Q=; b=ZbQ2eO21c+NWS65HK1EHCV2uHFS4m+zOc8vdISCDFQhiO2gW2AIfZKpy/Kbb/ME/QN WJqzruzCn8jZdswlN0kwWPNbR3pOjumsaXlj0L3XKqKoUDrp2e/i3Ld1bL5hzJE5SF00 pEMNJxPdENtMD/tM8Zn7NsJPPqXo/r+eAGFA9t+IiYt/LEtuLnhrIplffrdoBkAjX+Jk miHUf73sqksnKQtF+jmm/e3oxP5Sf7j+eT8i/AgLVVUpXYfcNUxJCxpz/MoXSXwzX0t/ gipjvWBpMj9zE9koEIc4pOdHEbZ/3RcXXG+IOyE/zTFBd3+d6gfOs4KcRnr2eidS+Qpi wgww== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1783075140; x=1783679940; 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; bh=GpVaUtcniJstsh8OFBCYgk7p2djQ5b3s9ea0tBWj/1Q=; b=tGBRzX5ymaBPHqVHQ0gNXbUEC04j17ug/uWnLQsH1GNdoBPzl9LQW/Cag3aKbfEx49 RkoYxHajGyCEA5A2U3NBVunlDXbd/YdjZbXuhC4jMOfGitAKFKNMBGrq4yjm0iu9H/Bl SO4HZRmijnPM7Q5ujkAUziWdULQCubk+36VazAcsbPsUP9G4w9PS3bVI4rbO5Vg0OoqN IUGX+1OCogqx5Dv/WNSAZQL/eQvCugYBawNHDH+/BH0fQ/rNdgg43jSNis5aNM8tnk8x vfuY/3N1Y8WuvvwlNkg2yJG2agRjOmZFsijig7VfTJUe4GK4ruNHsM24Ywg0XaQEpXv/ XCBQ== X-Forwarded-Encrypted: i=1; AFNElJ+rLalrCKlucsG15RGYqMRhVzmspXh2oZ910QxJqn1fzHhEpjepja9cdX+9+t5N9Ta4bEdhkPmol3WevW4=@vger.kernel.org X-Gm-Message-State: AOJu0YzF4QzDgKGJaGVlIDFGSAEROGewSfhp+zH+aMiGeAdK1RlIUU5q sbYU1OsL/9b+O8WL+szNoxesc+O6BTT0MuWXVklZdmFNrPc1suMcghU1N4/xAQ== X-Gm-Gg: AfdE7clkc4cGm/vtL00PtXggIDJwIUul3HccHfNF+K5X1/+ALbEVYwNIaa0rmT6y9xc xdkbQqTLvRd/WJiU6oRJp6rytAWpumWx+fFr2Z7ppq9hrGueh1BkTXJ0wWgLfcWTM4yemeYCPp9 Wdlz2T7hVEOuKA+nD3y7CYbuWwVJ6gCllYbd/fwFsrDtzB6o3xqx2xFigJ2u2AAruZEU3cepuO5 QNwQ2Qw7EhN5inyM/ksXbOq5YEnMkiJxrfpF+Yeql+7fussEdcLaDt4o03qPWSdxlroZYx0d3s4 qxp5wu9x9G5xupBzd+3E08lX1xE3K8DjVGnLQo2Ytuu1ljhx/ZnaJhJ/wZ6enTnbNHlz7OB8ZR/ GeuBUjz/ZUCy7wYqacGZazaEW2ryXVxZ98p9fVbsoWdxb1Mjp4S4ZA5VeK7qAE/qrwaZ5NJAmal q4D7hFWfDB2Dyv4sGwfCk0BBDwbygJeuVHpLHgvBviDVvQtsw= X-Received: by 2002:a05:6a21:62c7:b0:38e:92f6:9ab1 with SMTP id adf61e73a8af0-3c01c9faabfmr3706142637.22.1783075139579; Fri, 03 Jul 2026 03:38:59 -0700 (PDT) Received: from phuc-desktop.. ([183.91.15.56]) by smtp.gmail.com with ESMTPSA id 41be03b00d2f7-c9e91b0785csm2435743a12.18.2026.07.03.03.38.57 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 03 Jul 2026 03:38:59 -0700 (PDT) From: phucduc.bui@gmail.com To: Jaroslav Kysela , Takashi Iwai Cc: cassiogabrielcontato@gmail.com, Kees Cook , linux-sound@vger.kernel.org, linux-kernel@vger.kernel.org, bui duc phuc Subject: [PATCH] ALSA: core: propagate actual error code from register_chrdev Date: Fri, 3 Jul 2026 17:38:40 +0700 Message-ID: <20260703103840.253527-1-phucduc.bui@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 From: bui duc phuc The alsa_sound_init() function currently returns a hardcoded -EIO if register_chrdev() fails, masking specific error codes from __register_chrdev() such as -EINVAL, -ENOMEM, or -EBUSY. Masking these failures under a generic -EIO makes system-level diagnostics unnecessarily difficult. Propagating explicit error codes from register_chrdev() is also an established convention widely practiced across other subsystems. Fix this by capturing and propagating the dynamic error code from register_chrdev(). While at it, also assign the return value of snd_info_init() to the 'err' variable instead of hardcoding -ENOMEM to ensure consistency and future-proofing. Signed-off-by: bui duc phuc --- sound/core/sound.c | 14 ++++++++++---- 1 file changed, 10 insertions(+), 4 deletions(-) diff --git a/sound/core/sound.c b/sound/core/sound.c index 8d05fe0d263b..3e1969a52b21 100644 --- a/sound/core/sound.c +++ b/sound/core/sound.c @@ -395,15 +395,21 @@ int __init snd_minor_info_init(void) static int __init alsa_sound_init(void) { + int err; + snd_major = major; snd_ecards_limit = cards_limit; - if (register_chrdev(major, "alsa", &snd_fops)) { + + err = register_chrdev(major, "alsa", &snd_fops); + if (err < 0) { pr_err("ALSA core: unable to register native major device number %d\n", major); - return -EIO; + return err; } - if (snd_info_init() < 0) { + + err = snd_info_init(); + if (err < 0) { unregister_chrdev(major, "alsa"); - return -ENOMEM; + return err; } #ifdef CONFIG_SND_DEBUG -- 2.43.0