From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id D860F5172D4; Wed, 30 Sep 2026 18:15:46 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1790792148; cv=none; b=Mxsvn5HGwBsjWwqKrW4Xs1z9XVmFngtPmlNWgKF3jCd5plsdysQ3ULR8eRHpcR/xMFKO7f67cB/J7hXp/BsyTMjQYHhAnvSx0WGSrf1MNdx7ZBeK/CbHczHnaBMcVkCBnuHyQ0k0tjp9Tx93KJ0o8mb9BQrEPH5OL4KPDe/IiZg= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1790792148; c=relaxed/simple; bh=t0jZW1ePIKs5mAVfZuAs2W3RWPA+K18XQ1+UDWVoWag=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=AdoqwepieFfStBHkbO7kDoVsIvbpaBFAfB4/l9YME1F9sRR5zEtCbQawX9yHDk6bJQ9f+SHQujj7Ri7YZMAvR2dFKRM5j9nuvk02hve+vLImBw19dL7DkC00lO8hJP5Q6avxMzUX5YY//NNR+FcBujdkGhccmN/RdVcloobEKe8= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=0hwQvmAE; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="0hwQvmAE" Received: by smtp.kernel.org (Postfix) with ESMTPSA id E49331F000FF; Wed, 30 Sep 2026 18:15:45 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1790792146; bh=jZ6EAGFR7rXZ6zuD9gitMc0STLYqNkXicpwJJaw8+1k=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=0hwQvmAEhcHoWSljdQ/T81hi6Z9s5e4LyDlvm09y0GP5mfuUiuz0M38TuLrhcS2lJ +n1bGuiiqOUICJ0uNQ3CykfmMVAKkR2m6WRLadndSscErcLMbk1/M6B9CTIgZ6sSRR FJaTpMqCxB9vuebquddRDatYRYok1RqlcGYGQ884= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Runyu Xiao , Ulf Hansson Subject: [PATCH 5.15 550/752] mmc: sh_mmcif: initialize IRQ-thread mutex before requesting interrupt Date: Wed, 30 Sep 2026 17:27:00 +0200 Message-ID: <20260930152410.145456794@linuxfoundation.org> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20260930152358.131179731@linuxfoundation.org> References: <20260930152358.131179731@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 5.15-stable review patch. If anyone has any objections, please let me know. ------------------ From: Runyu Xiao commit d5ea0d226e8f0801d78702142a124d78c317d822 upstream. The threaded IRQ handler can run before devm_request_threaded_irq() returns, but thread_lock was initialized afterwards. Initialize it before requesting either interrupt. Fixes: 8047310ee984 ("mmc: sh_mmcif: fix a race, causing an Oops on SMP") Cc: stable@vger.kernel.org Assisted-by: Codex:GPT-5 Signed-off-by: Runyu Xiao Signed-off-by: Ulf Hansson Signed-off-by: Greg Kroah-Hartman --- drivers/mmc/host/sh_mmcif.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) --- a/drivers/mmc/host/sh_mmcif.c +++ b/drivers/mmc/host/sh_mmcif.c @@ -1422,6 +1422,7 @@ static int sh_mmcif_probe(struct platfor host->pd = pdev; spin_lock_init(&host->lock); + mutex_init(&host->thread_lock); mmc->ops = &sh_mmcif_ops; sh_mmcif_init_ocr(host); @@ -1482,8 +1483,6 @@ static int sh_mmcif_probe(struct platfor } } - mutex_init(&host->thread_lock); - ret = mmc_add_host(mmc); if (ret < 0) goto err_clk;