From patchwork Thu May 10 20:08:37 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Luis Chamberlain X-Patchwork-Id: 10392429 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 21C8960236 for ; Thu, 10 May 2018 20:13:44 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 129E228CDD for ; Thu, 10 May 2018 20:13:44 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 06D2C28CF1; Thu, 10 May 2018 20:13:44 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-8.0 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI autolearn=unavailable version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 7440028CDD for ; Thu, 10 May 2018 20:13:43 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752346AbeEJUNL (ORCPT ); Thu, 10 May 2018 16:13:11 -0400 Received: from mail.kernel.org ([198.145.29.99]:35240 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752101AbeEJUIz (ORCPT ); Thu, 10 May 2018 16:08:55 -0400 Received: from garbanzo.do-not-panic.com (c-73-15-241-2.hsd1.ca.comcast.net [73.15.241.2]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 0DD1621849; Thu, 10 May 2018 20:08:54 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1525982935; bh=K94GtACCn+guQrrH7T/i3DKULVwf2Gg71juQFdYQB04=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=eIRZX0eZbMWxx0gzcfRqE2OEWOo+fGiaHSjm7lso9zr3AtxZD4HW368CE07K1h9oP I1aGmn9QseqhV0Y9YTDIi2/n8w+qS/Tj702xdVyeIINUDvDfOoy3f0hfAvls9B7w1v SG+aiuVMbnRBuHgqOxtdHnKjtj9n4RHgf0t31EoU= From: "Luis R. Rodriguez" To: gregkh@linuxfoundation.org Cc: akpm@linux-foundation.org, keescook@chromium.org, josh@joshtriplett.org, maco@android.com, andy.gross@linaro.org, david.brown@linaro.org, bjorn.andersson@linaro.org, teg@jklm.no, wagi@monom.org, hdegoede@redhat.com, andresx7@gmail.com, zohar@linux.vnet.ibm.com, kubakici@wp.pl, shuah@kernel.org, mfuzzey@parkeon.com, dhowells@redhat.com, pali.rohar@gmail.com, tiwai@suse.de, kvalo@codeaurora.org, arend.vanspriel@broadcom.com, zajec5@gmail.com, nbroeking@me.com, markivx@codeaurora.org, broonie@kernel.org, dmitry.torokhov@gmail.com, dwmw2@infradead.org, torvalds@linux-foundation.org, Abhay_Salunke@dell.com, jewalt@lgsinnovations.com, oneukum@suse.com, cantabile.desu@gmail.com, khc@pm.waw.pl, arve@android.com, tkjos@android.com, corbet@lwn.net, mchehab+samsung@kernel.org, linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-wireless@vger.kernel.org, "Luis R . Rodriguez" Subject: [PATCH v7 01/14] firmware: wrap FW_OPT_* into an enum Date: Thu, 10 May 2018 13:08:37 -0700 Message-Id: <20180510200850.5958-2-mcgrof@kernel.org> X-Mailer: git-send-email 2.17.0 In-Reply-To: <20180510200850.5958-1-mcgrof@kernel.org> References: <20180510200850.5958-1-mcgrof@kernel.org> Sender: linux-fsdevel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Andres Rodriguez This should let us associate enum kdoc to these values. While at it, kdocify the fw_opt. Signed-off-by: Andres Rodriguez Reviewed-by: Kees Cook Acked-by: Luis R. Rodriguez [mcgrof: coding style fixes, merge kdoc with enum move] Signed-off-by: Luis R. Rodriguez --- drivers/base/firmware_loader/fallback.c | 12 ++++---- drivers/base/firmware_loader/fallback.h | 6 ++-- drivers/base/firmware_loader/firmware.h | 37 +++++++++++++++++++------ drivers/base/firmware_loader/main.c | 6 ++-- 4 files changed, 42 insertions(+), 19 deletions(-) diff --git a/drivers/base/firmware_loader/fallback.c b/drivers/base/firmware_loader/fallback.c index 358354148dec..b57a7b3b4122 100644 --- a/drivers/base/firmware_loader/fallback.c +++ b/drivers/base/firmware_loader/fallback.c @@ -512,7 +512,7 @@ static const struct attribute_group *fw_dev_attr_groups[] = { static struct fw_sysfs * fw_create_instance(struct firmware *firmware, const char *fw_name, - struct device *device, unsigned int opt_flags) + struct device *device, enum fw_opt opt_flags) { struct fw_sysfs *fw_sysfs; struct device *f_dev; @@ -545,7 +545,7 @@ fw_create_instance(struct firmware *firmware, const char *fw_name, * In charge of constructing a sysfs fallback interface for firmware loading. **/ static int fw_load_sysfs_fallback(struct fw_sysfs *fw_sysfs, - unsigned int opt_flags, long timeout) + enum fw_opt opt_flags, long timeout) { int retval = 0; struct device *f_dev = &fw_sysfs->dev; @@ -599,7 +599,7 @@ static int fw_load_sysfs_fallback(struct fw_sysfs *fw_sysfs, static int fw_load_from_user_helper(struct firmware *firmware, const char *name, struct device *device, - unsigned int opt_flags) + enum fw_opt opt_flags) { struct fw_sysfs *fw_sysfs; long timeout; @@ -640,7 +640,7 @@ static int fw_load_from_user_helper(struct firmware *firmware, return ret; } -static bool fw_force_sysfs_fallback(unsigned int opt_flags) +static bool fw_force_sysfs_fallback(enum fw_opt opt_flags) { if (fw_fallback_config.force_sysfs_fallback) return true; @@ -649,7 +649,7 @@ static bool fw_force_sysfs_fallback(unsigned int opt_flags) return true; } -static bool fw_run_sysfs_fallback(unsigned int opt_flags) +static bool fw_run_sysfs_fallback(enum fw_opt opt_flags) { if (fw_fallback_config.ignore_sysfs_fallback) { pr_info_once("Ignoring firmware sysfs fallback due to sysctl knob\n"); @@ -664,7 +664,7 @@ static bool fw_run_sysfs_fallback(unsigned int opt_flags) int fw_sysfs_fallback(struct firmware *fw, const char *name, struct device *device, - unsigned int opt_flags, + enum fw_opt opt_flags, int ret) { if (!fw_run_sysfs_fallback(opt_flags)) diff --git a/drivers/base/firmware_loader/fallback.h b/drivers/base/firmware_loader/fallback.h index f8255670a663..a3b73a09db6c 100644 --- a/drivers/base/firmware_loader/fallback.h +++ b/drivers/base/firmware_loader/fallback.h @@ -5,6 +5,8 @@ #include #include +#include "firmware.h" + /** * struct firmware_fallback_config - firmware fallback configuration settings * @@ -31,7 +33,7 @@ struct firmware_fallback_config { #ifdef CONFIG_FW_LOADER_USER_HELPER int fw_sysfs_fallback(struct firmware *fw, const char *name, struct device *device, - unsigned int opt_flags, + enum fw_opt opt_flags, int ret); void kill_pending_fw_fallback_reqs(bool only_kill_custom); @@ -43,7 +45,7 @@ void unregister_sysfs_loader(void); #else /* CONFIG_FW_LOADER_USER_HELPER */ static inline int fw_sysfs_fallback(struct firmware *fw, const char *name, struct device *device, - unsigned int opt_flags, + enum fw_opt opt_flags, int ret) { /* Keep carrying over the same error */ diff --git a/drivers/base/firmware_loader/firmware.h b/drivers/base/firmware_loader/firmware.h index 64acbb1a392c..4f433b447367 100644 --- a/drivers/base/firmware_loader/firmware.h +++ b/drivers/base/firmware_loader/firmware.h @@ -2,6 +2,7 @@ #ifndef __FIRMWARE_LOADER_H #define __FIRMWARE_LOADER_H +#include #include #include #include @@ -10,13 +11,33 @@ #include -/* firmware behavior options */ -#define FW_OPT_UEVENT (1U << 0) -#define FW_OPT_NOWAIT (1U << 1) -#define FW_OPT_USERHELPER (1U << 2) -#define FW_OPT_NO_WARN (1U << 3) -#define FW_OPT_NOCACHE (1U << 4) -#define FW_OPT_NOFALLBACK (1U << 5) +/** + * enum fw_opt - options to control firmware loading behaviour + * + * @FW_OPT_UEVENT: Enables the fallback mechanism to send a kobject uevent + * when the firmware is not found. Userspace is in charge to load the + * firmware using the sysfs loading facility. + * @FW_OPT_NOWAIT: Used to describe the firmware request is asynchronous. + * @FW_OPT_USERHELPER: Enable the fallback mechanism, in case the direct + * filesystem lookup fails at finding the firmware. For details refer to + * fw_sysfs_fallback(). + * @FW_OPT_NO_WARN: Quiet, avoid printing warning messages. + * @FW_OPT_NOCACHE: Disables firmware caching. Firmware caching is used to + * cache the firmware upon suspend, so that upon resume races against the + * firmware file lookup on storage is avoided. Used for calls where the + * file may be too big, or where the driver takes charge of its own + * firmware caching mechanism. + * @FW_OPT_NOFALLBACK: Disable the fallback mechanism. Takes precedence over + * &FW_OPT_UEVENT and &FW_OPT_USERHELPER. + */ +enum fw_opt { + FW_OPT_UEVENT = BIT(0), + FW_OPT_NOWAIT = BIT(1), + FW_OPT_USERHELPER = BIT(2), + FW_OPT_NO_WARN = BIT(3), + FW_OPT_NOCACHE = BIT(4), + FW_OPT_NOFALLBACK = BIT(5), +}; enum fw_status { FW_STATUS_UNKNOWN, @@ -110,6 +131,6 @@ static inline void fw_state_done(struct fw_priv *fw_priv) } int assign_fw(struct firmware *fw, struct device *device, - unsigned int opt_flags); + enum fw_opt opt_flags); #endif /* __FIRMWARE_LOADER_H */ diff --git a/drivers/base/firmware_loader/main.c b/drivers/base/firmware_loader/main.c index eb34089e4299..9919f0e6a7cc 100644 --- a/drivers/base/firmware_loader/main.c +++ b/drivers/base/firmware_loader/main.c @@ -443,7 +443,7 @@ static int fw_add_devm_name(struct device *dev, const char *name) #endif int assign_fw(struct firmware *fw, struct device *device, - unsigned int opt_flags) + enum fw_opt opt_flags) { struct fw_priv *fw_priv = fw->priv; int ret; @@ -558,7 +558,7 @@ static void fw_abort_batch_reqs(struct firmware *fw) static int _request_firmware(const struct firmware **firmware_p, const char *name, struct device *device, void *buf, size_t size, - unsigned int opt_flags) + enum fw_opt opt_flags) { struct firmware *fw = NULL; int ret; @@ -734,7 +734,7 @@ struct firmware_work { struct device *device; void *context; void (*cont)(const struct firmware *fw, void *context); - unsigned int opt_flags; + enum fw_opt opt_flags; }; static void request_firmware_work_func(struct work_struct *work)