From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from sender4-pp-f112.zoho.com (sender4-pp-f112.zoho.com [136.143.188.112]) (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 58DB244684D for ; Tue, 11 Aug 2026 14:09:40 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=pass smtp.client-ip=136.143.188.112 ARC-Seal:i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1786457381; cv=pass; b=Wb9O2728o7jQLJOZEoqruNMXK4Pb/cHLrzeIA/4SDiYTcNY4BLdMifvdmZmGxhkWPar7yNcePiS/Oz6Evc+s0iMe85UTDMTOtWPrFN8/yeW4Jek3nNlAhIeszoKLMmfwW4FtkDW38dQjXGLh2T1ovk+QG9wGS1YFcKo4y0EJ038= ARC-Message-Signature:i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1786457381; c=relaxed/simple; bh=p5ZDgezxnjMjQ8fM0VGryOz9Ammp9b8YgstqAZgei8A=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=JV7c2PJ6Oln3ufIBv+MJXFykpO36/Hpc6hBhKKFbIYxUo+d6zsOMwKTPTPn5k1YkYFp6TXxaafAq2UJrQ3DjCHi47Kqiqbx1KiIQs7WP4OMOsE898cphCZhypn8L/YrgrNU1ne3/x0u8tLb/jJ4ykybfEZ2YTxaZvUAl/srWOL4= ARC-Authentication-Results:i=2; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=collabora.com; spf=pass smtp.mailfrom=collabora.com; dkim=pass (1024-bit key) header.d=collabora.com header.i=nicolas.frattaroli@collabora.com header.b=Fp9yQSch; arc=pass smtp.client-ip=136.143.188.112 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=collabora.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=collabora.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=collabora.com header.i=nicolas.frattaroli@collabora.com header.b="Fp9yQSch" ARC-Seal: i=1; a=rsa-sha256; t=1786457341; cv=none; d=zohomail.com; s=zohoarc; b=h9mFyRpOamoR+kvaZiIOKFHoFGIQMPB+5rSuZzl1XZMgzpsAMTYOf+7DkkOGTPlEF/OiaWmeXCTneyowC2Zy5Z/OSQjygfGjxYUyZo+z5pEMIMVqaSpi9DdNgFeZTdWWXJfBBN3cyRwA6mfny5XZsXOa63tNv9w60mNxkEJCw2g= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1786457341; h=Content-Type:Content-Transfer-Encoding:Cc:Cc:Date:Date:From:From:In-Reply-To:MIME-Version:Message-ID:Subject:Subject:To:To:Message-Id:Reply-To; bh=PfEeTZSKiQJ4Kl8xP6ZpXuq1P7X2kjIYGltG4VZl9cg=; b=c7sCqKvsj8tPq7KbLSCyonw8GFEPWib6tHCiCQHvBrUff6GoDRRIDigPwuREUoZmTmt7C4KMTBbpXZwhQUVQE/RPzrnkZCM82qBWZIvljm5hdzo1fRRe7WCvsAF7Ks5+v2mxSkAtFyHF90nNXA4VktgeN0CFlcEuQuGtswBQ9H8= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass header.i=collabora.com; spf=pass smtp.mailfrom=nicolas.frattaroli@collabora.com; dmarc=pass header.from= DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; t=1786457341; s=zohomail; d=collabora.com; i=nicolas.frattaroli@collabora.com; h=From:From:Date:Date:Subject:Subject:MIME-Version:Content-Type:Content-Transfer-Encoding:Message-Id:Message-Id:In-Reply-To:To:To:Cc:Cc:Reply-To; bh=PfEeTZSKiQJ4Kl8xP6ZpXuq1P7X2kjIYGltG4VZl9cg=; b=Fp9yQSchCYtTAhYOuk/WQIWiM6ybYPU+NjqI8ZWTa59jvwXu/XNwHt4nYKQOAGee jHI2kbZOg0FhHDosz+mkI6ZDM4kYo1qHGsblHXniHFsHzz5o7vWh1GjIgm3pZXicTbi 80DOEHg+X6uYXQxN5UBSO15flyPeU5KSAG0AMd+A= Received: by mx.zohomail.com with SMTPS id 178645733923324.047296889769655; Tue, 11 Aug 2026 07:08:59 -0700 (PDT) From: Nicolas Frattaroli Date: Tue, 11 Aug 2026 16:08:33 +0200 Subject: [PATCH v3 3/3] drm/panthor: Take reqs_lock in soft_reset for clearing pending_reqs Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20260811-panthor-cache-flush-fix-v3-3-47d2c1bb1dab@collabora.com> References: <20260811-panthor-cache-flush-fix-v3-0-47d2c1bb1dab@collabora.com> In-Reply-To: <20260811-panthor-cache-flush-fix-v3-0-47d2c1bb1dab@collabora.com> To: Boris Brezillon , Steven Price , Liviu Dudau , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Simona Vetter , Grant Likely , Heiko Stuebner Cc: linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, kernel@collabora.com, Nicolas Frattaroli X-Mailer: b4 0.15.2 panthor_gpu_soft_reset() sets pending_reqs to 0 without taking the requisite reqs_lock. Fix this by taking the lock for the duration of the modification. Fixes: 5cd894e258c4 ("drm/panthor: Add the GPU logical block") Signed-off-by: Nicolas Frattaroli --- drivers/gpu/drm/panthor/panthor_gpu.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/panthor/panthor_gpu.c b/drivers/gpu/drm/panthor/panthor_gpu.c index cb5319d1c5de..12e7e29b35b5 100644 --- a/drivers/gpu/drm/panthor/panthor_gpu.c +++ b/drivers/gpu/drm/panthor/panthor_gpu.c @@ -405,7 +405,10 @@ int panthor_gpu_soft_reset(struct panthor_device *ptdev) return -ETIMEDOUT; } - ptdev->gpu->pending_reqs = 0; + scoped_guard(spinlock, &ptdev->gpu->reqs_lock) { + ptdev->gpu->pending_reqs = 0; + } + return 0; } -- 2.55.0