From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756107AbaEAJ6c (ORCPT ); Thu, 1 May 2014 05:58:32 -0400 Received: from mail-wi0-f182.google.com ([209.85.212.182]:56892 "EHLO mail-wi0-f182.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756056AbaEAJ6Z (ORCPT ); Thu, 1 May 2014 05:58:25 -0400 From: Lee Jones To: linux-kernel@vger.kernel.org Cc: computersforpeace@gmail.com, linux-mtd@lists.infradead.org, kernel@stlinux.com, Lee Jones Subject: [PATCH 38/47] mtd: nand: stm_nand_bch: dump bad blocks Date: Thu, 1 May 2014 10:56:45 +0100 Message-Id: <1398938214-17847-39-git-send-email-lee.jones@linaro.org> X-Mailer: git-send-email 1.8.3.2 In-Reply-To: <1398938214-17847-1-git-send-email-lee.jones@linaro.org> References: <1398938214-17847-1-git-send-email-lee.jones@linaro.org> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Inform the user of any known bad blocks during initialisation. Conversely, if there aren't any known bad blocks, let the user know the good news. Signed-off-by: Lee Jones --- drivers/mtd/nand/stm_nand_bch.c | 24 ++++++++++++++++++++++++ 1 file changed, 24 insertions(+) diff --git a/drivers/mtd/nand/stm_nand_bch.c b/drivers/mtd/nand/stm_nand_bch.c index a06dca8..6aaa118 100644 --- a/drivers/mtd/nand/stm_nand_bch.c +++ b/drivers/mtd/nand/stm_nand_bch.c @@ -1259,6 +1259,28 @@ static int bch_scan_bbt(struct mtd_info *mtd) return 0; } +static void nandi_dump_bad_blocks(struct nandi_controller *nandi) +{ + int bad_count = 0; + uint32_t block; + uint8_t *bbt = nandi->info.bbt_info.bbt; + uint8_t mark; + + pr_info("BBT:\n"); + for (block = 0; block < nandi->blocks_per_device; block++) { + mark = bbt_get_block_mark(bbt, block); + if (mark != BBT_MARK_GOOD) { + pr_info("\t\tBlock 0x%08x [%05u] marked bad [%s]\n", + block << nandi->block_shift, block, + (mark == BBT_MARK_BAD_FACTORY) ? + "Factory" : "Wear"); + bad_count++; + } + } + if (bad_count == 0) + pr_info("\t\tNo bad blocks listed in BBT\n"); +} + /* * Initialisation */ @@ -2021,6 +2043,8 @@ static int stm_nand_bch_probe(struct platform_device *pdev) if (err) return err; + nandi_dump_bad_blocks(nandi); + return 0; } -- 1.8.3.2