From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 A803A3A872A for ; Thu, 23 Apr 2026 17:23:52 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1776965032; cv=none; b=iqKSHviNnKh1zfytXGd+0usx9FJJX5LhVXUf/XTir6QYD2Z2mF24wMzDJ0T4aG6RnLJcwa6GAhRbEsI/IHc/la+O7yWVElJdSbu+saJs84qvtz7J/zLgqTgW/bSYwTjcpS5bpUw0yzGFAMx+AkJagNxmyYOoK7iNnA3tcqj7Tto= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1776965032; c=relaxed/simple; bh=i1zlfKqoBWN27zTMIh+OOnDw/plffp5P3L7s2aSHSfI=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=TDUZSiIK1v3OwFI49sZUhE0/cN4QASxhgsVIdU5KWPETBpvVpg3pUZEA1PPXlOKFZq7GnHo7vv6RWMeC+7OJBZm61f9yIinfZX2x0QWUAiRfULA+v+3FLOo1oUrNpMXAOM8x88jyaZed1PRqDc7xfhprwKj9ro4qZ13EuHCJHj0= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=OFNk6j0K; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="OFNk6j0K" Received: by smtp.kernel.org (Postfix) with ESMTPSA id B7302C2BCAF; Thu, 23 Apr 2026 17:23:51 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1776965032; bh=i1zlfKqoBWN27zTMIh+OOnDw/plffp5P3L7s2aSHSfI=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=OFNk6j0KAd1NN8/nvgHQ6Egdms+ZX6699lnUxuVMk9JPdCRyrtnSRIiyg0GLGjUmm qesvgUwzgDwny0MXo2jU7QZ/VaIcsfPC82NZf109I2lyr8ZWL+m4xYUkWf1cLMAuCT ofd1IWRLCi26k48NpsVh0Pah/dXkvVKyrugEnyFFBLzXLM13DzRVl4CFBuuQ0O4XCZ W9uQpFDIreYtGlYeNbAbOmqVo/4JAZRodVcUn3g5N6BV4KG3YbUl7FPDiU9ExqAu/v 6Ei/PWoUBUW4UiLwWUEzj13MDb0mbdM3oy9mfV5jXtIqLTDSXffKtle82za4UBbQA0 Lr7N8qsaccf0g== From: Sudeep Holla Date: Thu, 23 Apr 2026 18:22:53 +0100 Subject: [PATCH 3/8] firmware: arm_ffa: Align RxTx buffer size before mapping 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: <20260423-ffa_fixes-v1-3-61189661affe@kernel.org> References: <20260423-ffa_fixes-v1-0-61189661affe@kernel.org> In-Reply-To: <20260423-ffa_fixes-v1-0-61189661affe@kernel.org> To: linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org Cc: Jens Wiklander , Sudeep Holla , Sebastian Ene X-Mailer: b4 0.15.2 Commit 83210251fd70 ("firmware: arm_ffa: Use the correct buffer size during RXTX_MAP") advertises PAGE_ALIGN(rxtx_bufsz) to firmware when mapping the buffers but the driver continues to stores the minimum FF-A buffer size in drv_info->rxtx_bufsz which is used elsewhere in the driver. Align the size before storing it so that the allocation, validation and FFA_RXTX_MAP all use the same buffer size. Fixes: 83210251fd70 ("firmware: arm_ffa: Use the correct buffer size during RXTX_MAP") Cc: Sebastian Ene Link: https://sashiko.dev/#/patchset/20260402113939.930221-1-sebastianene@google.com Signed-off-by: Sudeep Holla --- drivers/firmware/arm_ffa/driver.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/firmware/arm_ffa/driver.c b/drivers/firmware/arm_ffa/driver.c index e6a051b20cb7..4dec7ca52f8c 100644 --- a/drivers/firmware/arm_ffa/driver.c +++ b/drivers/firmware/arm_ffa/driver.c @@ -2063,6 +2063,7 @@ static int __init ffa_init(void) rxtx_bufsz = SZ_4K; } + rxtx_bufsz = PAGE_ALIGN(rxtx_bufsz); drv_info->rxtx_bufsz = rxtx_bufsz; drv_info->rx_buffer = alloc_pages_exact(rxtx_bufsz, GFP_KERNEL); if (!drv_info->rx_buffer) { @@ -2078,7 +2079,7 @@ static int __init ffa_init(void) ret = ffa_rxtx_map(virt_to_phys(drv_info->tx_buffer), virt_to_phys(drv_info->rx_buffer), - PAGE_ALIGN(rxtx_bufsz) / FFA_PAGE_SIZE); + rxtx_bufsz / FFA_PAGE_SIZE); if (ret) { pr_err("failed to register FFA RxTx buffers\n"); goto free_pages; -- 2.43.0