From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S934686Ab0KQOck (ORCPT ); Wed, 17 Nov 2010 09:32:40 -0500 Received: from mga09.intel.com ([134.134.136.24]:20610 "EHLO mga09.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933847Ab0KQOcj (ORCPT ); Wed, 17 Nov 2010 09:32:39 -0500 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.59,211,1288594800"; d="scan'208";a="574715882" Date: Wed, 17 Nov 2010 22:09:54 +0800 From: Yong Wang To: Greg Kroah-Hartman Cc: Arjan van de Ven , chuanxiao.dong@intel.com, yunpeng.gao@intel.com, linux-kernel@vger.kernel.org Subject: [PATCH] staging: spectra: asynchronous init Message-ID: <20101117140954.GB5790@ywang-moblin2.bj.intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.5.18 (2008-05-17) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org The spectra nand driver takes quite some time to initialize because it needs to scan the whole nand disk to find the latest block table. This patch initializes the spectra nand driver asynchronously so that other things in the kernel can initialize in parallel to the scanning operation. Signed-off-by: Yong Wang --- drivers/staging/spectra/ffsport.c | 13 +++++++++---- 1 files changed, 9 insertions(+), 4 deletions(-) diff --git a/drivers/staging/spectra/ffsport.c b/drivers/staging/spectra/ffsport.c index ae101a2..007b24b 100644 --- a/drivers/staging/spectra/ffsport.c +++ b/drivers/staging/spectra/ffsport.c @@ -28,6 +28,7 @@ #include #include #include +#include /**** Helper functions used for Div, Remainder operation on u64 ****/ @@ -729,7 +730,7 @@ static void create_sysfs_entry(struct device *dev) } */ -int register_spectra_ftl() +static void register_spectra_ftl_async(void *unused, async_cookie_t cookie) { int i; @@ -738,7 +739,7 @@ int register_spectra_ftl() if (PASS != GLOB_FTL_IdentifyDevice(&IdentifyDeviceData)) { printk(KERN_ERR "Spectra: Unable to Read Flash Device. " "Aborting\n"); - return -ENOMEM; + return; } else { nand_dbg_print(NAND_DBG_WARN, "In GLOB_SBD_init: " "Num blocks=%d, pagesperblock=%d, " @@ -772,15 +773,19 @@ int register_spectra_ftl() "Spectra: module loaded with major number %d\n", GLOB_SBD_majornum); - return PASS; + return; out_blk_register: unregister_blkdev(GLOB_SBD_majornum, GLOB_SBD_NAME); out_ftl_flash_register: GLOB_FTL_Cache_Release(); printk(KERN_ERR "Spectra: Module load failed.\n"); +} - return FAIL; +int register_spectra_ftl() +{ + async_schedule(register_spectra_ftl_async, NULL); + return 0; } EXPORT_SYMBOL_GPL(register_spectra_ftl); -- 1.5.5.1