From 1385858ee07cbfd68c503a10e4a526d24223d465 Mon Sep 17 00:00:00 2001 From: Roel Kluin Date: Fri, 22 Jan 2010 22:22:52 +0100 Subject: [PATCH] mtd: nand_bcm: fix hot spin and code duplication In the branch where pagesize equalled NAND_DATA_ACCESS_SIZE, NumToRead wasn't decremented in the `while (numToRead > 11)' loop. Also the first and last while loops were duplicated in both branches. Signed-off-by: Roel Kluin Acked-by: Leo Chen Signed-off-by: David Woodhouse --- drivers/mtd/nand/nand_bcm_umi.h | 77 ++++++++++++--------------------- 1 file changed, 28 insertions(+), 49 deletions(-) diff --git a/drivers/mtd/nand/nand_bcm_umi.h b/drivers/mtd/nand/nand_bcm_umi.h index 7cec2cd97854..198b304d6f72 100644 --- a/drivers/mtd/nand/nand_bcm_umi.h +++ b/drivers/mtd/nand/nand_bcm_umi.h @@ -167,18 +167,27 @@ static inline void nand_bcm_umi_bch_read_oobEcc(uint32_t pageSize, int numToRead = 16; /* There are 16 bytes per sector in the OOB */ /* ECC is already paused when this function is called */ + if (pageSize != NAND_DATA_ACCESS_SIZE) { + /* skip BI */ +#if defined(__KERNEL__) && !defined(STANDALONE) + *oobp++ = REG_NAND_DATA8; +#else + REG_NAND_DATA8; +#endif + numToRead--; + } + + while (numToRead > numEccBytes) { + /* skip free oob region */ +#if defined(__KERNEL__) && !defined(STANDALONE) + *oobp++ = REG_NAND_DATA8; +#else + REG_NAND_DATA8; +#endif + numToRead--; + } if (pageSize == NAND_DATA_ACCESS_SIZE) { - while (numToRead > numEccBytes) { - /* skip free oob region */ -#if defined(__KERNEL__) && !defined(STANDALONE) - *oobp++ = REG_NAND_DATA8; -#else - REG_NAND_DATA8; -#endif - numToRead--; - } - /* read ECC bytes before BI */ nand_bcm_umi_bch_resume_read_ecc_calc(); @@ -190,6 +199,7 @@ static inline void nand_bcm_umi_bch_read_oobEcc(uint32_t pageSize, #else eccCalc[eccPos++] = REG_NAND_DATA8; #endif + numToRead--; } nand_bcm_umi_bch_pause_read_ecc_calc(); @@ -204,49 +214,18 @@ static inline void nand_bcm_umi_bch_read_oobEcc(uint32_t pageSize, numToRead--; } - /* read ECC bytes */ - nand_bcm_umi_bch_resume_read_ecc_calc(); - while (numToRead) { + } + /* read ECC bytes */ + nand_bcm_umi_bch_resume_read_ecc_calc(); + while (numToRead) { #if defined(__KERNEL__) && !defined(STANDALONE) - *oobp = REG_NAND_DATA8; - eccCalc[eccPos++] = *oobp; - oobp++; + *oobp = REG_NAND_DATA8; + eccCalc[eccPos++] = *oobp; + oobp++; #else - eccCalc[eccPos++] = REG_NAND_DATA8; -#endif - numToRead--; - } - } else { - /* skip BI */ -#if defined(__KERNEL__) && !defined(STANDALONE) - *oobp++ = REG_NAND_DATA8; -#else - REG_NAND_DATA8; + eccCalc[eccPos++] = REG_NAND_DATA8; #endif numToRead--; - - while (numToRead > numEccBytes) { - /* skip free oob region */ -#if defined(__KERNEL__) && !defined(STANDALONE) - *oobp++ = REG_NAND_DATA8; -#else - REG_NAND_DATA8; -#endif - numToRead--; - } - - /* read ECC bytes */ - nand_bcm_umi_bch_resume_read_ecc_calc(); - while (numToRead) { -#if defined(__KERNEL__) && !defined(STANDALONE) - *oobp = REG_NAND_DATA8; - eccCalc[eccPos++] = *oobp; - oobp++; -#else - eccCalc[eccPos++] = REG_NAND_DATA8; -#endif - numToRead--; - } } }