From patchwork Thu Apr 10 12:55:58 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mika Westerberg X-Patchwork-Id: 880116 Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.13]) (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 82206269D0C for ; Thu, 10 Apr 2025 12:56:04 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=192.198.163.13 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1744289766; cv=none; b=iQ9M1OMpFBZJFf64tfhvQJnyvHB/QKQuBy2A/Y4UCNwiWPH1fqC5AQ0sFScyhFtg6YWGF27gvqvVGdvgQ33IUwbdbGEimsGGw+52WWT0hvtVkcdnKL29NuTqZLC2CXr0bph2T9TtAzgWMyu+OxAVVZt7qYTTmCIownLnoOIKcy4= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1744289766; c=relaxed/simple; bh=6KrJ7W2cRxSJR2K+OvRI3JtZW+2jWadpO5qaoyPi6TI=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=W0pI0gd2HklEgGPALRVdxUWQBxXmb8LD2Z11914slY7uFGwaV+D3CTgl7o7RsWarwN3tFb4FcjmzvhzysyCx4pxCGHR47Pe+4F+og/GW15OTsl/vj12aYWbEQEe0NuIEORXBX2ZRdlpfw8KVsFzfe0eXWd/B4CytRe0PTupu9gk= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.intel.com; spf=none smtp.mailfrom=linux.intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=ULJia8F1; arc=none smtp.client-ip=192.198.163.13 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.intel.com Authentication-Results: smtp.subspace.kernel.org; spf=none smtp.mailfrom=linux.intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="ULJia8F1" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1744289765; x=1775825765; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=6KrJ7W2cRxSJR2K+OvRI3JtZW+2jWadpO5qaoyPi6TI=; b=ULJia8F1V8Z8c7DS1f23ej4hT5q1CrzdzLLZRRMlJR4zudJK4bIz+Kfv IHbIoEOF5jRHVkXmxY/xvjcVjPZtRHwl7pAa8eI8d5lOf/+qAB4ZidxLj 0R+/krMLrL1TfJZYt8lRivQesyVIlw70VrY5ZyhlyNngx7y+kZgAh2GL4 vYQ9XslQUtA1Z3hViDtLvcT/uNrGUOGOJBJ+tBjhS+igxaTqrWJ3dWOqt eLJNWTyAcIRM73ZvZZIhA+5owvMyJJ/oOJBdZk1SXkdbgokQ26DhJf/Gn qphTmZm7wGDBVaoTrChDFCpE1pp629ECC41TZrUQ3c9bxQ8TIa8vm7nw7 w==; X-CSE-ConnectionGUID: xaU/BgAaQRq1hM8pNfFY+A== X-CSE-MsgGUID: Yw6jV+9+RfSGkOaRd6fShw== X-IronPort-AV: E=McAfee;i="6700,10204,11400"; a="48512296" X-IronPort-AV: E=Sophos;i="6.15,202,1739865600"; d="scan'208";a="48512296" Received: from fmviesa001.fm.intel.com ([10.60.135.141]) by fmvoesa107.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 10 Apr 2025 05:56:04 -0700 X-CSE-ConnectionGUID: L3Ceb6cmSDaEtIhRgE/7CA== X-CSE-MsgGUID: vMU0b1S0T0a+bP/VFQlT3A== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.15,202,1739865600"; d="scan'208";a="159861908" Received: from black.fi.intel.com ([10.237.72.28]) by fmviesa001.fm.intel.com with ESMTP; 10 Apr 2025 05:56:02 -0700 Received: by black.fi.intel.com (Postfix, from userid 1001) id A5DBC162; Thu, 10 Apr 2025 15:56:00 +0300 (EEST) From: Mika Westerberg To: linux-usb@vger.kernel.org Cc: Yehezkel Bernat , Michael Jamet , Lukas Wunner , Andreas Noever , Alan Borzeszkowski , Saranya Gopal , Mika Westerberg Subject: [PATCH 1/3] thunderbolt: Introduce domain event message handler Date: Thu, 10 Apr 2025 15:55:58 +0300 Message-ID: <20250410125600.3074417-2-mika.westerberg@linux.intel.com> X-Mailer: git-send-email 2.47.2 In-Reply-To: <20250410125600.3074417-1-mika.westerberg@linux.intel.com> References: <20250410125600.3074417-1-mika.westerberg@linux.intel.com> Precedence: bulk X-Mailing-List: linux-usb@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 From: Alan Borzeszkowski This patch introduces a function that can be used to send uevent notifications in the domain to userspace. For instance, it can indicate that a DisplayPort tunnel could not be established due to insufficient bandwidth. Userspace can then forward to user via dialog or similar. Convert boot_acl_store() to call this instead of open-coding. Signed-off-by: Alan Borzeszkowski Signed-off-by: Mika Westerberg --- drivers/thunderbolt/domain.c | 2 +- drivers/thunderbolt/tb.h | 13 +++++++++++++ 2 files changed, 14 insertions(+), 1 deletion(-) diff --git a/drivers/thunderbolt/domain.c b/drivers/thunderbolt/domain.c index 144d0232a70c..a3a7c8059eee 100644 --- a/drivers/thunderbolt/domain.c +++ b/drivers/thunderbolt/domain.c @@ -217,7 +217,7 @@ static ssize_t boot_acl_store(struct device *dev, struct device_attribute *attr, ret = tb->cm_ops->set_boot_acl(tb, acl, tb->nboot_acl); if (!ret) { /* Notify userspace about the change */ - kobject_uevent(&tb->dev.kobj, KOBJ_CHANGE); + tb_domain_event(tb, NULL); } mutex_unlock(&tb->lock); diff --git a/drivers/thunderbolt/tb.h b/drivers/thunderbolt/tb.h index b54147a1ba87..5869b379e4f7 100644 --- a/drivers/thunderbolt/tb.h +++ b/drivers/thunderbolt/tb.h @@ -804,6 +804,19 @@ static inline void tb_domain_put(struct tb *tb) put_device(&tb->dev); } +/** + * tb_domain_event() - Notify userspace about an event in domain + * @tb: Domain where event occurred + * @envp: Array of uevent environment strings (can be %NULL) + * + * This function provides a way to notify userspace about any events + * that take place in the domain. + */ +static inline void tb_domain_event(struct tb *tb, char *envp[]) +{ + kobject_uevent_env(&tb->dev.kobj, KOBJ_CHANGE, envp); +} + struct tb_nvm *tb_nvm_alloc(struct device *dev); int tb_nvm_read_version(struct tb_nvm *nvm); int tb_nvm_validate(struct tb_nvm *nvm);