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 83C7B3B892B; Sat, 28 Feb 2026 17:39:00 +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=1772300340; cv=none; b=EzAtoWQKqoJWQ8pOlSfHQR+AndJ1hxstv/FybFgddwud4ujVjUlSOpalO1Cg4Owu6DrdUqSKPMATgO3+oW9fU+nlLd2aEPfxnLzeGrDAOZAF4tDL+94xZIY4yT0Ufs6XXanXqlW+5/IJYktTmFx3sgXeWiS2985QiabznV5vE8M= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1772300340; c=relaxed/simple; bh=4B9zfesSIGCETB9yT7zZ8o1RykvPoYvqKhAu5noR5P0=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=rl3/b0omLlzy/HPrfqYpj5Z9B1QoUzhoigJEWDYcUsSA64RJ7rfBy26mU7Tw7kYB1gEnHdbbupBhQHB/HBQqKsSNgJupOSZxLBIoyZPtNHuIShZZgvQEjqFcOmnoEw8Z2kcofG17FeNaJiUMXSV6/wChOTySgGYLOjaGEWHuXTs= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=pH1CneM6; 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="pH1CneM6" Received: by smtp.kernel.org (Postfix) with ESMTPSA id B79F5C2BC87; Sat, 28 Feb 2026 17:38:59 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1772300340; bh=4B9zfesSIGCETB9yT7zZ8o1RykvPoYvqKhAu5noR5P0=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=pH1CneM6NB0CYGHvwEo4Y5biUcELhwqzkJ7NBRvqDwonXA5Z3E11PggbBgpzaZD8h IBr5dHj6mjt1KYOkAA2J7wqDaZhqaT40n6dmaT1skdKRh4Zf+9C7+Q5UJOs7ohnwo+ 9f8giRK9hsMiqeSvqnEWSrkZeWxcncjLmjBk004OpM0mtMyFePqMt9B2YLa2QxRNYY LXDCnTVu4YElYcz6UE6L8VHXnOuZ4B1Uqjs+w2W82nPhJZpnCa4xrLwLLPPIDT3Opi 7imr4b5eGAdwHFCLlO4KfHbzPsBt0ig0EXPOxgUiEktBNSUSzWSwiMsvgnP1PDWgum QKPJ4As7nnOJQ== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Romain Gantois , Xu Yilun , Xu Yilun , Sasha Levin Subject: [PATCH 6.19 373/844] fpga: of-fpga-region: Fail if any bridge is missing Date: Sat, 28 Feb 2026 12:24:46 -0500 Message-ID: <20260228173244.1509663-374-sashal@kernel.org> X-Mailer: git-send-email 2.51.0 In-Reply-To: <20260228173244.1509663-1-sashal@kernel.org> References: <20260228173244.1509663-1-sashal@kernel.org> Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit From: Romain Gantois [ Upstream commit c141c8221bc5089de915d9f26044df892c343c7e ] When parsing the region bridge list from the "fpga-bridges" device tree property, the of-fpga-region driver will silently ignore bridges which fail to be obtained, for example due to a missing bridge driver or invalid phandle. This can lead to hardware issues if a region bridge stays coupled when partial programming is performed. Fail if any of the bridges specified in "fpga-bridges" cannot be obtained. Signed-off-by: Romain Gantois Link: https://lore.kernel.org/r/20251127-of-fpga-region-fail-if-bridges-not-found-v1-1-ca674f8d07eb@bootlin.com Reviewed-by: Xu Yilun Signed-off-by: Xu Yilun Signed-off-by: Sasha Levin --- drivers/fpga/of-fpga-region.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/drivers/fpga/of-fpga-region.c b/drivers/fpga/of-fpga-region.c index 43db4bb77138a..caa091224dc54 100644 --- a/drivers/fpga/of-fpga-region.c +++ b/drivers/fpga/of-fpga-region.c @@ -83,7 +83,7 @@ static struct fpga_manager *of_fpga_region_get_mgr(struct device_node *np) * done with the bridges. * * Return: 0 for success (even if there are no bridges specified) - * or -EBUSY if any of the bridges are in use. + * or an error code if any of the bridges are not available. */ static int of_fpga_region_get_bridges(struct fpga_region *region) { @@ -130,10 +130,10 @@ static int of_fpga_region_get_bridges(struct fpga_region *region) ®ion->bridge_list); of_node_put(br); - /* If any of the bridges are in use, give up */ - if (ret == -EBUSY) { + /* If any of the bridges are not available, give up */ + if (ret) { fpga_bridges_put(®ion->bridge_list); - return -EBUSY; + return ret; } } -- 2.51.0