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 4228045D1A8 for ; Wed, 12 Aug 2026 14:08:23 +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=1786543705; cv=pass; b=YExJmbY3qrIA/9cSccKVfZC4p0BXdoErZauLkDUqkDKwql4Q05cuvcLy4iYa4EbVwq3BcfG4cIisIuWb9tcj0TY+CA6xeySzIjI79gLKRdFlHtAMh+a3Ia7ddpiNhk3i9E1FkKOKwG9B0hPG8tqkGYMV1cNeNFkJNbCODI6pC+Q= ARC-Message-Signature:i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1786543705; c=relaxed/simple; bh=L3MFXfKSkj6rU7DPU/e8dvH4Rh3jxJLto4mmUM9sOac=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=FfZ2B8U8+LILRJ7sBenztmwbWeIPiU0SipBQ814lNi0cSUPb9utC9vQ5eOu06pxDTl69WaZQ4Xjupc3vmsj60L5ta18epkZqprQkd06/JDoPyyeDOuhc/V0SCYtObRIwDA6dN3U+JuhgCDTwRA+7Z9IgzdxUHctr4ncwjsfbJB8= 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=G4AM3erP; 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="G4AM3erP" ARC-Seal: i=1; a=rsa-sha256; t=1786543671; cv=none; d=zohomail.com; s=zohoarc; b=T/dWqFDuZGZm5sYp54t5Ak4f7QFB7Sw51d7BH7189IElWksZcWTUDuCRTpQYLDM8hQvjLx04q447ISMxsL/n+eN5G3nL/v2U76iCOzT0zJ1gHQuu9iwlLtp3sqXZRO01oS25oE1VK2xfXOFAn15bOS5eaGl0nfortwbeMsIk9AI= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1786543671; 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=xCfOeZu/Y9broWEs5rnkuR+d/pmW7LGYmqy2RRCYI90=; b=mVOhzevx/qcXMIZwwILL+FeQS0ma4/dOqvwrxMfUs3X3mUUXEH3DN3ISt8ZDJfCL9r+/8hyvweaL8bZJfFi1jvtDWwiofzzAuvhXGNyznbcc0oQ8cjTbjKZEoALJKJfuUHzah9FUwyFC9sye1S+TfoXh/oUSgjR9xZ0dLotDExE= 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=1786543671; 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=xCfOeZu/Y9broWEs5rnkuR+d/pmW7LGYmqy2RRCYI90=; b=G4AM3erPo8RXG7BtFllSDYhM1rmC71rWScMX/rjt7H8db7ty6FqkEee+HPOVsnci ANuQk7UsturSs3lCIdTWvOpDVnL6iDSIySGLwrTcqH6vDLhalhutqVskjWMT9aI+iWo KPdZyLRBMnbbBfpRwmzhCtjku2IVCUkoQuPN+26c= Received: by mx.zohomail.com with SMTPS id 1786543669037639.2757185019814; Wed, 12 Aug 2026 07:07:49 -0700 (PDT) From: Nicolas Frattaroli Date: Wed, 12 Aug 2026 16:07:20 +0200 Subject: [PATCH v4 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: <20260812-panthor-cache-flush-fix-v4-3-751e32901898@collabora.com> References: <20260812-panthor-cache-flush-fix-v4-0-751e32901898@collabora.com> In-Reply-To: <20260812-panthor-cache-flush-fix-v4-0-751e32901898@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") Reviewed-by: Boris Brezillon 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 55e33f145b40..fb2702e1e0a2 100644 --- a/drivers/gpu/drm/panthor/panthor_gpu.c +++ b/drivers/gpu/drm/panthor/panthor_gpu.c @@ -424,7 +424,10 @@ 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