Return-path: Received: from mail-la0-f52.google.com ([209.85.215.52]:45079 "EHLO mail-la0-f52.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752539Ab3ILPe1 (ORCPT ); Thu, 12 Sep 2013 11:34:27 -0400 From: Vladimir Murzin To: linux-wireless@vger.kernel.org, netdev@vger.kernel.org Cc: coelho@ti.com, linville@tuxdriver.com, Vladimir Murzin Subject: [PATCH 3/3] wlcore: limit base for output buffer in dev_mem_read Date: Thu, 12 Sep 2013 17:32:23 +0200 Message-Id: <1378999943-1968-4-git-send-email-murzin.v@gmail.com> (sfid-20130912_173436_030185_B9E609F4) In-Reply-To: <1378999943-1968-1-git-send-email-murzin.v@gmail.com> References: <1378999943-1968-1-git-send-email-murzin.v@gmail.com> Sender: linux-wireless-owner@vger.kernel.org List-ID: dev_mem_read tries to speed up things a bit by limiting output buffer which can not exceed WLCORE_MAX_BLOCK_SIZE. However, WLCORE_MAX_BLOCK_SIZE is based on PAGE_SIZE which may vary. Use 4K size base for buffer explicitly. Signed-off-by: Vladimir Murzin --- drivers/net/wireless/ti/wlcore/debugfs.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/net/wireless/ti/wlcore/debugfs.c b/drivers/net/wireless/ti/wlcore/debugfs.c index e17630c..6b413a7 100644 --- a/drivers/net/wireless/ti/wlcore/debugfs.c +++ b/drivers/net/wireless/ti/wlcore/debugfs.c @@ -38,7 +38,8 @@ /* ms */ #define WL1271_DEBUGFS_STATS_LIFETIME 1000 -#define WLCORE_MAX_BLOCK_SIZE ((size_t)(4*PAGE_SIZE)) +#define WLCORE_PAGE_SIZE 4096 +#define WLCORE_MAX_BLOCK_SIZE ((size_t)(4*WLCORE_PAGE_SIZE)) /* debugfs macros idea from mac80211 */ int wl1271_format_buffer(char __user *userbuf, size_t count, -- 1.7.10.4