From patchwork Sat Sep 7 15:02:49 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hauke Mehrtens X-Patchwork-Id: 2856431 Return-Path: X-Original-To: patchwork-linux-wireless@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork1.web.kernel.org (Postfix) with ESMTP id C391A9F2D6 for ; Sat, 7 Sep 2013 15:03:16 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id B54E120257 for ; Sat, 7 Sep 2013 15:03:15 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id EA53F20256 for ; Sat, 7 Sep 2013 15:03:12 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751705Ab3IGPDK (ORCPT ); Sat, 7 Sep 2013 11:03:10 -0400 Received: from server19320154104.serverpool.info ([193.201.54.104]:53683 "EHLO hauke-m.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751687Ab3IGPDJ (ORCPT ); Sat, 7 Sep 2013 11:03:09 -0400 Received: from localhost (localhost [127.0.0.1]) by hauke-m.de (Postfix) with ESMTP id F34368F61; Sat, 7 Sep 2013 17:03:05 +0200 (CEST) X-Virus-Scanned: Debian amavisd-new at hauke-m.de Received: from hauke-m.de ([127.0.0.1]) by localhost (hauke-m.de [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 9P25rih6GFqs; Sat, 7 Sep 2013 17:02:56 +0200 (CEST) Received: from hauke-desktop.lan (spit-414.wohnheim.uni-bremen.de [134.102.133.158]) by hauke-m.de (Postfix) with ESMTPSA id 9DD99857F; Sat, 7 Sep 2013 17:02:55 +0200 (CEST) From: Hauke Mehrtens To: linville@tuxdriver.com Cc: linux-wireless@vger.kernel.org, zajec5@gmail.com, arend@broadcom.com, Hauke Mehrtens Subject: [PATCH 3.12] bcma: fix error code handling on 64 Bit systems Date: Sat, 7 Sep 2013 17:02:49 +0200 Message-Id: <1378566169-24302-1-git-send-email-hauke@hauke-m.de> X-Mailer: git-send-email 1.7.10.4 Sender: linux-wireless-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org X-Spam-Status: No, score=-9.3 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=ham version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP On most 64 Bit systems unsigned long is 64 bit long and then -MAX_ERRNO is out of the range of a u32 used to store the error code in. This patch casts the -MAX_ERRNO to a u32 instead. This fixes a regression introduced in: commit fd4edf197544bae1c77d84bad354aa7ce1d08ce1 Author: Hauke Mehrtens Date: Mon Jul 15 13:15:08 2013 +0200 bcma: fix handling of big addrl Reported-by: Arend van Spriel Signed-off-by: Hauke Mehrtens Tested-by: Arend van Spriel --- drivers/bcma/scan.c | 12 +++++++----- 1 file changed, 7 insertions(+), 5 deletions(-) diff --git a/drivers/bcma/scan.c b/drivers/bcma/scan.c index cd6b20f..3776840 100644 --- a/drivers/bcma/scan.c +++ b/drivers/bcma/scan.c @@ -269,6 +269,8 @@ static struct bcma_device *bcma_find_core_reverse(struct bcma_bus *bus, u16 core return NULL; } +#define IS_ERR_VALUE_U32(x) ((x) >= (u32)-MAX_ERRNO) + static int bcma_get_next_core(struct bcma_bus *bus, u32 __iomem **eromptr, struct bcma_device_id *match, int core_num, struct bcma_device *core) @@ -351,11 +353,11 @@ static int bcma_get_next_core(struct bcma_bus *bus, u32 __iomem **eromptr, * the main register space for the core */ tmp = bcma_erom_get_addr_desc(bus, eromptr, SCAN_ADDR_TYPE_SLAVE, 0); - if (tmp == 0 || IS_ERR_VALUE(tmp)) { + if (tmp == 0 || IS_ERR_VALUE_U32(tmp)) { /* Try again to see if it is a bridge */ tmp = bcma_erom_get_addr_desc(bus, eromptr, SCAN_ADDR_TYPE_BRIDGE, 0); - if (tmp == 0 || IS_ERR_VALUE(tmp)) { + if (tmp == 0 || IS_ERR_VALUE_U32(tmp)) { return -EILSEQ; } else { bcma_info(bus, "Bridge found\n"); @@ -369,7 +371,7 @@ static int bcma_get_next_core(struct bcma_bus *bus, u32 __iomem **eromptr, for (j = 0; ; j++) { tmp = bcma_erom_get_addr_desc(bus, eromptr, SCAN_ADDR_TYPE_SLAVE, i); - if (IS_ERR_VALUE(tmp)) { + if (IS_ERR_VALUE_U32(tmp)) { /* no more entries for port _i_ */ /* pr_debug("erom: slave port %d " * "has %d descriptors\n", i, j); */ @@ -386,7 +388,7 @@ static int bcma_get_next_core(struct bcma_bus *bus, u32 __iomem **eromptr, for (j = 0; ; j++) { tmp = bcma_erom_get_addr_desc(bus, eromptr, SCAN_ADDR_TYPE_MWRAP, i); - if (IS_ERR_VALUE(tmp)) { + if (IS_ERR_VALUE_U32(tmp)) { /* no more entries for port _i_ */ /* pr_debug("erom: master wrapper %d " * "has %d descriptors\n", i, j); */ @@ -404,7 +406,7 @@ static int bcma_get_next_core(struct bcma_bus *bus, u32 __iomem **eromptr, for (j = 0; ; j++) { tmp = bcma_erom_get_addr_desc(bus, eromptr, SCAN_ADDR_TYPE_SWRAP, i + hack); - if (IS_ERR_VALUE(tmp)) { + if (IS_ERR_VALUE_U32(tmp)) { /* no more entries for port _i_ */ /* pr_debug("erom: master wrapper %d " * has %d descriptors\n", i, j); */