From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-pj1-f47.google.com (mail-pj1-f47.google.com [209.85.216.47]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 536EE175A7F for ; Mon, 27 Jul 2026 05:31:49 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.216.47 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1785130310; cv=none; b=JbpJYdTPMQZNTW/BVadU6zx+ESNSwOaCir8/qorgMjI5Ievu/Z1n+m6NQ5cZ/ZD0SvOjIjckyCnEfOdeXJLY+vFEOmG7gGsr6H2afkR7ibDtXB66FSR2MJuIgQ/ung+Z2NbtC7Qe1YVxtz6WU/lYVHBEnOEnA2R5RVtnFISrASg= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1785130310; c=relaxed/simple; bh=lpdb5Gm6hxDQQsH39lkVCGM6F9nZVRoMPuZAoenMwaE=; h=Date:From:To:Cc:Subject:Message-ID:MIME-Version:Content-Type: Content-Disposition; b=TJGPRqTKEjqYyEZpxMKQHD6OaQZDpVWi4yFnBlm1vPiZcpdbbuxxcWfiJm0a6LYQvhqRAvZLvkr7T1xVJFaMFkoXqenFly+ax1cXy7PsWW4dQ2BfvuS6u9loe6bcQrXgCadmDUzlYpA1VWX+E84FYF4NWYJdH1kYRd3iockYZSk= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=VG33c7Ut; arc=none smtp.client-ip=209.85.216.47 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="VG33c7Ut" Received: by mail-pj1-f47.google.com with SMTP id 98e67ed59e1d1-38de840f2f0so1700177a91.0 for ; Sun, 26 Jul 2026 22:31:49 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20251104; t=1785130308; x=1785735108; darn=lists.linux.dev; h=content-disposition:content-type:mime-version:message-id:subject:cc :to:from:date:from:to:cc:subject:date:message-id:reply-to :content-type; bh=omjjRVD8i5LphSadX9Fqn62uij+zBEpbBaeWrs9DOfw=; b=VG33c7UtPLXr3VvuzF49KuTHiBp42AIbgPHsVNKwk5wy8vmRsjX2wvfk4fTjSqeBL2 hNBclG+JGiqUa1kGx1iQPeEjtoL8Oz4WJl/Du23Qb58Ir+U78rphNaAo41O9DQcl1tnw tUE4qlHKKHFoqDSqye6FBhd7/rvjHwKH5IEf5irbcyI92VOp00jDNyt0k6Yo3Aj0NK6z UiVKZfGJUM0S9N9xtYKezZ6eGk1CY+MclpMlFOVwn/z3/FS7xp6GMHvWA64BU1YsQwjj gU/9mp7vcttbrFJet6AN74jIWdxiQh4BEsi388UHTeU070v/K+MKZk2/Es9/ojHrTHig 0tfQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1785130308; x=1785735108; h=content-disposition:content-type:mime-version:message-id:subject:cc :to:from:date:x-gm-gg:x-gm-message-state:from:to:cc:subject:date :message-id:reply-to:content-type; bh=omjjRVD8i5LphSadX9Fqn62uij+zBEpbBaeWrs9DOfw=; b=CkqRE4eGkb3Oj9/GhlcdeLG7Y960mN0G6+hOqz4ykzc0mwB4qGrTwBhJic/uAwXvk8 1M7hS2soFIqdm1prrUhLuBA4M2xVROhfNVe+HJ/4vLxOkTTq31Jf6MstqaYHqI3Ave+t ZtaBrkAXjWOztow4Of6Jg9nmPeqKobF+ryZrnmg9CXK4TbQgXFksYZvSdsnC37gdEEWV h6zc4Z/pkIIuTqwArNyAFUwO9N7hP3stN4LXcfoFjyIb9p0jDGg5t3aJDspisWuqT+gf 0fFJ/6MZMu8ZZjr6xUT8/hu0V39HkLaajpRrVXaDbt07bamQMyZDKTGGqZQ/PmkSe1Te +JZQ== X-Forwarded-Encrypted: i=1; AHgh+RqbifHqfMKRqltMvNaI/zbI1RvrgE5O8KCtd3r6tNyfYylunMPUb5Wcy2u+9ObqPPVLTk6OzzY+QubgDQ==@lists.linux.dev X-Gm-Message-State: AOJu0YzAKS3r00XGDeZBE/cPZKXB4cFexd7o+5dL7TOS8dJ8Rr4DqygL JJCbC67ZR7r/NTzZ7CJjj9S2rwsRbi1mCbD2zXeaZlLRskfzwgOcik8Z X-Gm-Gg: AR+sD11cLZAgmPeIpLu1K4jwuSLxoyUVEv5bUBCG1LfXjWgshGLwK9NuGkYTm3O8rxt N8cfekTTNIZn9ctVOstWrQ4/qdt1NpD29/Ube0mx1JvH1mOfZS/HWmdHvw0t4owai5w+bypkVNE dI8EQuBz8kv/mL1UgPRAaJ1c/IHLphyMbgSr0qNDrYpS6yRwzW18usu9hOnZu0l5mC1W7HQyFas 5cZKpLb/GV5vhPyod9yzcK5vbP/I+moBWXxmfThDi29GOPR10gCBTzubnF+SxPT/1CSG2BgO7eP 6rU6UCOsaMQCsFpFFGYaB/vfJnZMJVFzVzEyDMxPfwX6IJyK0zA0YogWSDcBg5CFvFYHRnrXFgn ZQWNbAbxmFyjCa8OE37HvngjFxd1lJtKghVW4Qw073upuOP4EYPw6RCAQ1egFllrxW5R+M+T6H+ oAilSsVkvaEuRebIFzXLCR9PV2f76DigogpmrvvRItsmo= X-Received: by 2002:a17:90a:d00d:b0:387:e0db:bc2c with SMTP id 98e67ed59e1d1-38f2965e5d5mr7050447a91.34.1785130308496; Sun, 26 Jul 2026 22:31:48 -0700 (PDT) Received: from google.com ([2a00:79e0:2ebe:8:fc2f:1878:e714:ef41]) by smtp.gmail.com with ESMTPSA id a92af1059eb24-13e6461ef84sm5562517c88.14.2026.07.26.22.31.43 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 26 Jul 2026 22:31:43 -0700 (PDT) Date: Sun, 26 Jul 2026 22:31:41 -0700 From: Dmitry Torokhov To: Greg Kroah-Hartman , Danilo Krummrich Cc: "Rafael J. Wysocki" , driver-core@lists.linux.dev, linux-kernel@vger.kernel.org Subject: [PATCH] driver core: introduce PROBE_FORCE_ASYNCHRONOUS Message-ID: Precedence: bulk X-Mailing-List: driver-core@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Add PROBE_FORCE_ASYNCHRONOUS probe type enum and update driver_allows_async_probing() to allow asynchronous probing for drivers marked with this type. While PROBE_PREFER_ASYNCHRONOUS exists, it represents a temporary opt-in preference. Subsystems that require asynchronous probing (such as slow legacy buses) need a dedicated probe type to guarantee asynchronous execution. Assisted-by: Antigravity:gemini-3.5-flash Signed-off-by: Dmitry Torokhov --- I am planning to rework serio and gameport subsystems to rely on asynchronous probing instead of rolling their own implementations. drivers/base/dd.c | 1 + include/linux/device/driver.h | 1 + 2 files changed, 2 insertions(+) diff --git a/drivers/base/dd.c b/drivers/base/dd.c index 60c005223844..34df7b4416ac 100644 --- a/drivers/base/dd.c +++ b/drivers/base/dd.c @@ -936,6 +936,7 @@ __setup("driver_async_probe=", save_async_options); static bool driver_allows_async_probing(const struct device_driver *drv) { switch (drv->probe_type) { + case PROBE_FORCE_ASYNCHRONOUS: case PROBE_PREFER_ASYNCHRONOUS: return true; diff --git a/include/linux/device/driver.h b/include/linux/device/driver.h index 768a1334c0a1..4b3901a35e85 100644 --- a/include/linux/device/driver.h +++ b/include/linux/device/driver.h @@ -48,6 +48,7 @@ enum probe_type { PROBE_DEFAULT_STRATEGY, PROBE_PREFER_ASYNCHRONOUS, PROBE_FORCE_SYNCHRONOUS, + PROBE_FORCE_ASYNCHRONOUS, }; /** -- 2.55.0.229.g6434b31f56-goog -- Dmitry