Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S964857Ab3DHJ73 (ORCPT ); Mon, 8 Apr 2013 05:59:29 -0400 Received: from youngberry.canonical.com ([91.189.89.112]:43005 "EHLO youngberry.canonical.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S935898Ab3DHJwl (ORCPT ); Mon, 8 Apr 2013 05:52:41 -0400 From: Luis Henriques To: linux-kernel@vger.kernel.org, stable@vger.kernel.org, kernel-team@lists.ubuntu.com Cc: Lars-Peter Clausen , Mark Brown , Luis Henriques Subject: [PATCH 084/102] regmap: cache Fix regcache-rbtree sync Date: Mon, 8 Apr 2013 10:50:39 +0100 Message-Id: <1365414657-29191-85-git-send-email-luis.henriques@canonical.com> X-Mailer: git-send-email 1.8.1.2 In-Reply-To: <1365414657-29191-1-git-send-email-luis.henriques@canonical.com> References: <1365414657-29191-1-git-send-email-luis.henriques@canonical.com> X-Extended-Stable: 3.5 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1856 Lines: 47 3.5.7.10 -stable review patch. If anyone has any objections, please let me know. ------------------ From: Lars-Peter Clausen commit 8abac3ba51b5525354e9b2ec0eed1c9e95c905d9 upstream. The last register block, which falls into the specified range, is not handled correctly. The formula which calculates the number of register which should be synced is inverse (and off by one). E.g. if all registers in that block should be synced only one is synced, and if only one should be synced all (but one) are synced. To calculate the number of registers that need to be synced we need to subtract the number of the first register in the block from the max register number and add one. This patch updates the code accordingly. The issue was introduced in commit ac8d91c ("regmap: Supply ranges to the sync operations"). Signed-off-by: Lars-Peter Clausen Signed-off-by: Mark Brown Signed-off-by: Luis Henriques --- drivers/base/regmap/regcache-rbtree.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/base/regmap/regcache-rbtree.c b/drivers/base/regmap/regcache-rbtree.c index e6732cf..79f4fca 100644 --- a/drivers/base/regmap/regcache-rbtree.c +++ b/drivers/base/regmap/regcache-rbtree.c @@ -398,7 +398,7 @@ static int regcache_rbtree_sync(struct regmap *map, unsigned int min, base = 0; if (max < rbnode->base_reg + rbnode->blklen) - end = rbnode->base_reg + rbnode->blklen - max; + end = max - rbnode->base_reg + 1; else end = rbnode->blklen; -- 1.8.1.2 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/