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authorpekon gupta <pekon@ti.com>2013-11-19 11:02:17 +0530
committerScott Wood <scottwood@freescale.com>2014-03-03 20:09:03 -0600
commit6e562b1106ea6afc78752f50925e87e9dd14f8b4 (patch)
tree057186dc5fb6d74e9721ba9fbd3f13dd77ec4ba1 /include/zfs_common.h
parent71a7f95600eeea03100af66e2f11498048f32cfe (diff)
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mtd: nand: omap: optimized chip->ecc.correct() for H/W ECC schemes
chip->ecc.correct() is used for detecting and correcting bit-flips during read operations. In omap-nand driver it implemented as: (a) omap_correct_data(): for h/w based ECC_HAM1 scheme (b) omap_correct_data_bch() + CONFIG_NAND_OMAP_ECC_BCH8_CODE_HW_DETECTION_SW for ECC_BCH8 scheme using GPMC and software lib/bch.c (c) omap_correct_data_bch() + CONFIG_NAND_OMAP_ECC_BCH8_CODE_HW for ECC_BCH8 scheme using GPMC and ELM This patch updates (c) - checks for calc_ecc[]==0x00 so that error_correction is not required for known good pages. - adds scalability for other ECC_BCHx scheme by merging following omap_rotate_ecc_bch() + omap_fix_errors_bch() => omap_correct_data_bch() - fixing logic for bit-flip correction based on error_loc[count] Signed-off-by: Pekon Gupta <pekon@ti.com>
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