From patchwork Fri Jun 19 14:31:52 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg KH X-Patchwork-Id: 223654 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.8 required=3.0 tests=DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id F3F35C433E0 for ; Fri, 19 Jun 2020 16:48:44 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id C0845204EC for ; Fri, 19 Jun 2020 16:48:44 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1592585324; bh=hfapDkEfZmE1hECKHBeJP8PA9TACADmdyv6ViXtOqws=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=tUpYdRiYT5uLIDh/nRV23JgFsyyoTisvcs48Hutkq80FrmFwOY63ta47I26X4EZkF fEnoGJeN3fMoODmrZoqWzBtQMoJHlX9I4B2VJv5fRa7IWl0eW0Hnw0aDqDgn3awjAh 91HAJljmPeVz2Jn/8IzMKpUUaF4BYT1HMT/5GkCo= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2388161AbgFSQsh (ORCPT ); Fri, 19 Jun 2020 12:48:37 -0400 Received: from mail.kernel.org ([198.145.29.99]:57988 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1733303AbgFSOkK (ORCPT ); Fri, 19 Jun 2020 10:40:10 -0400 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 1FDA621556; Fri, 19 Jun 2020 14:40:09 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1592577610; bh=hfapDkEfZmE1hECKHBeJP8PA9TACADmdyv6ViXtOqws=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=vjmM2MahXkgxn17jaaDaZa8JtsrPnmzONYZEkrqJolf90whg663DyhEGCpGKsUKBR +XAPNTOG64RsQ6GAi+kPBRi838L0Lwc/9zwX6EwaE3svM1tSBhrvTLOQaB117bkGRB 8kbxZX/kpLMfXGOQtOlT11lEa3y8SubV64JPcmnE= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Ard Biesheuvel , "Rafael J. Wysocki" Subject: [PATCH 4.9 018/128] ACPI: GED: add support for _Exx / _Lxx handler methods Date: Fri, 19 Jun 2020 16:31:52 +0200 Message-Id: <20200619141621.125988620@linuxfoundation.org> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20200619141620.148019466@linuxfoundation.org> References: <20200619141620.148019466@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Ard Biesheuvel commit ea6f3af4c5e63f6981c0b0ab8ebec438e2d5ef40 upstream. Per the ACPI spec, interrupts in the range [0, 255] may be handled in AML using individual methods whose naming is based on the format _Exx or _Lxx, where xx is the hex representation of the interrupt index. Add support for this missing feature to our ACPI GED driver. Cc: v4.9+ # v4.9+ Signed-off-by: Ard Biesheuvel Signed-off-by: Rafael J. Wysocki Signed-off-by: Greg Kroah-Hartman --- drivers/acpi/evged.c | 22 +++++++++++++++++++--- 1 file changed, 19 insertions(+), 3 deletions(-) --- a/drivers/acpi/evged.c +++ b/drivers/acpi/evged.c @@ -82,6 +82,8 @@ static acpi_status acpi_ged_request_inte struct resource r; struct acpi_resource_irq *p = &ares->data.irq; struct acpi_resource_extended_irq *pext = &ares->data.extended_irq; + char ev_name[5]; + u8 trigger; if (ares->type == ACPI_RESOURCE_TYPE_END_TAG) return AE_OK; @@ -90,14 +92,28 @@ static acpi_status acpi_ged_request_inte dev_err(dev, "unable to parse IRQ resource\n"); return AE_ERROR; } - if (ares->type == ACPI_RESOURCE_TYPE_IRQ) + if (ares->type == ACPI_RESOURCE_TYPE_IRQ) { gsi = p->interrupts[0]; - else + trigger = p->triggering; + } else { gsi = pext->interrupts[0]; + trigger = p->triggering; + } irq = r.start; - if (ACPI_FAILURE(acpi_get_handle(handle, "_EVT", &evt_handle))) { + switch (gsi) { + case 0 ... 255: + sprintf(ev_name, "_%c%02hhX", + trigger == ACPI_EDGE_SENSITIVE ? 'E' : 'L', gsi); + + if (ACPI_SUCCESS(acpi_get_handle(handle, ev_name, &evt_handle))) + break; + /* fall through */ + default: + if (ACPI_SUCCESS(acpi_get_handle(handle, "_EVT", &evt_handle))) + break; + dev_err(dev, "cannot locate _EVT method\n"); return AE_ERROR; }