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 943E832254B; Mon, 18 Aug 2025 13:36:53 +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=1755524213; cv=none; b=aSF6nN9FMg4DIYA+qgMtkBg6KhfM5OOrP52hYVrklRJ1n3cKYObWwPD4vibSybVaAN4QD8ctmXWtgkCY2J9EbWSW8VlwL8JkhOtGMQvPuiCeAgl0zn63xT2FE8GRMcjKkMS/95QqkrYznPrq+2q1zbbIqjJqnxZffqqpuuvFk8Y= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1755524213; c=relaxed/simple; bh=VrcFrztr9oENubPqFT/YRg8jbJlnWmF0PwOTf/+vTDc=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=EBQQEHd/WnO1wj2uc7HwgJmXqW2n7Bc/a0TjmYOH9C6o+jBRAfaKAtMB6RjcHqEtqhBWWTHSS4qDGJ05TE2qay1Me4T9prW3ZJghpCY2n7acYMtikqmNktLzi731B+tQXZad403aC3pLG1kLWNXemdXnuZq7eb/B2eY+b9env9I= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=vCm66K01; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="vCm66K01" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 0D845C4CEEB; Mon, 18 Aug 2025 13:36:52 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1755524213; bh=VrcFrztr9oENubPqFT/YRg8jbJlnWmF0PwOTf/+vTDc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=vCm66K01HnbmWGDqD/xDJh5+r8VZG2FOozY+HctU5SYbfVzaWIiL37sWIqM3qTGJO Gpgpi2NHeMZWwQ5VZmEabDkFCFjyEtIRhEoDwMow/eRp0X5Ib4djUmbrkHIf+p4x3l I9cQCD7WWTqWpHpZZczXIbheUk0I5fcu+kNBQ+Tk= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Wolfram Sang , Frank Li , Alexandre Belloni , Sasha Levin Subject: [PATCH 6.15 395/515] i3c: dont fail if GETHDRCAP is unsupported Date: Mon, 18 Aug 2025 14:46:21 +0200 Message-ID: <20250818124513.618380265@linuxfoundation.org> X-Mailer: git-send-email 2.50.1 In-Reply-To: <20250818124458.334548733@linuxfoundation.org> References: <20250818124458.334548733@linuxfoundation.org> User-Agent: quilt/0.68 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 6.15-stable review patch. If anyone has any objections, please let me know. ------------------ From: Wolfram Sang [ Upstream commit 447270cdb41b1c8c3621bb14b93a6749f942556e ] 'I3C_BCR_HDR_CAP' is still spec v1.0 and has been renamed to 'advanced capabilities' in v1.1 onwards. The ST pressure sensor LPS22DF does not have HDR, but has the 'advanced cap' bit set. The core still wants to get additional information using the CCC 'GETHDRCAP' (or GETCAPS in v1.1 onwards). Not all controllers support this CCC and will notify the upper layers about it. For instantiating the device, we can ignore this unsupported CCC as standard communication will work. Without this patch, the device will not be instantiated at all. Signed-off-by: Wolfram Sang Reviewed-by: Frank Li Link: https://lore.kernel.org/r/20250704204524.6124-1-wsa+renesas@sang-engineering.com Signed-off-by: Alexandre Belloni Signed-off-by: Sasha Levin --- drivers/i3c/master.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/i3c/master.c b/drivers/i3c/master.c index fd81871609d9..e53c69d24873 100644 --- a/drivers/i3c/master.c +++ b/drivers/i3c/master.c @@ -1439,7 +1439,7 @@ static int i3c_master_retrieve_dev_info(struct i3c_dev_desc *dev) if (dev->info.bcr & I3C_BCR_HDR_CAP) { ret = i3c_master_gethdrcap_locked(master, &dev->info); - if (ret) + if (ret && ret != -ENOTSUPP) return ret; } -- 2.39.5