From patchwork Tue Dec 19 15:43:05 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg KH X-Patchwork-Id: 756358 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 1C77B1CF89; Tue, 19 Dec 2023 15:43:08 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="Nut0wwAf" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 3ED81C433C8; Tue, 19 Dec 2023 15:43:08 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1703000588; bh=Ql8eGZzccquuIXGz4rdOVYKLAU9LfVk8VwDxLu7AhDs=; h=From:To:Cc:Subject:Date:From; b=Nut0wwAfIZ/1YFZTjEZLhk060n1eGRbTdh0jfp0jBfrqJyBp0Ul7GG7UDU8A7UwA5 UjQ3Sygqcq6jtCxNzaoBC4mgY/hE1cB5f7ZgZqXyguIRnixvwGgGxLWyfW+CmM4QAa qEE4fnwYoj/tI62BWOwQGJo5BJ0sgV6RZcc/f0aE= From: Greg Kroah-Hartman To: mika.westerberg@linux.intel.com Cc: linux-kernel@vger.kernel.org, Greg Kroah-Hartman , Andreas Noever , Michael Jamet , Yehezkel Bernat , linux-usb@vger.kernel.org Subject: [PATCH] thunderbolt: make tb_bus_type const Date: Tue, 19 Dec 2023 16:43:05 +0100 Message-ID: <2023121904-utopia-broadcast-06d1@gregkh> X-Mailer: git-send-email 2.43.0 Precedence: bulk X-Mailing-List: linux-usb@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=1520; i=gregkh@linuxfoundation.org; h=from:subject:message-id; bh=Ql8eGZzccquuIXGz4rdOVYKLAU9LfVk8VwDxLu7AhDs=; b=owGbwMvMwCRo6H6F97bub03G02pJDKmNuzjz9PpUpdVOpS+WbT/w9uYV4/tNez6qsx5Q2sOrN 9n+39/CjlgWBkEmBlkxRZYv23iO7q84pOhlaHsaZg4rE8gQBi5OAZjIZlWG+eHZTZclt22M5haf PJUtQ9xaed2cfoYFm79r7dW6csLfQ/Js7Nf4jLxzwar6AA== X-Developer-Key: i=gregkh@linuxfoundation.org; a=openpgp; fpr=F4B60CC5BF78C2214A313DCB3147D40DDB2DFB29 Now that the driver core can properly handle constant struct bus_type, move the tb_bus_type variable to be a constant structure as well, placing it into read-only memory which can not be modified at runtime. Cc: Andreas Noever Cc: Michael Jamet Cc: Mika Westerberg Cc: Yehezkel Bernat Cc: linux-usb@vger.kernel.org Signed-off-by: Greg Kroah-Hartman --- drivers/thunderbolt/domain.c | 2 +- include/linux/thunderbolt.h | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/thunderbolt/domain.c b/drivers/thunderbolt/domain.c index ec7b5f65804e..9fb1a64f3300 100644 --- a/drivers/thunderbolt/domain.c +++ b/drivers/thunderbolt/domain.c @@ -307,7 +307,7 @@ static const struct attribute_group *domain_attr_groups[] = { NULL, }; -struct bus_type tb_bus_type = { +const struct bus_type tb_bus_type = { .name = "thunderbolt", .match = tb_service_match, .probe = tb_service_probe, diff --git a/include/linux/thunderbolt.h b/include/linux/thunderbolt.h index 6151c210d987..2c835e5c41f6 100644 --- a/include/linux/thunderbolt.h +++ b/include/linux/thunderbolt.h @@ -86,7 +86,7 @@ struct tb { unsigned long privdata[]; }; -extern struct bus_type tb_bus_type; +extern const struct bus_type tb_bus_type; extern struct device_type tb_service_type; extern struct device_type tb_xdomain_type;