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93af53b863
The current code abuses ifdefs to determine if the selected ECC scheme is supported by the running kernel. As a result the code is hard to read, and it also fails to load as a module. This commit removes all the ifdefs and instead introduces a function omap2_nand_ecc_check() to check if the ECC is supported by using IS_ENABLED(CONFIG_xxx). Since IS_ENABLED() is true when a config is =y or =m, this change fixes the module so it can be loaded with no issues. Acked-by: Roger Quadros <rogerq@ti.com> Signed-off-by: Ezequiel Garcia <ezequiel@vanguardiasur.com.ar> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
65 lines
1.7 KiB
C
65 lines
1.7 KiB
C
/*
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* BCH Error Location Module
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*
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* Copyright (C) 2012 Texas Instruments Incorporated - http://www.ti.com/
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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*/
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#ifndef __ELM_H
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#define __ELM_H
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enum bch_ecc {
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BCH4_ECC = 0,
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BCH8_ECC,
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BCH16_ECC,
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};
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/* ELM support 8 error syndrome process */
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#define ERROR_VECTOR_MAX 8
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/**
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* struct elm_errorvec - error vector for elm
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* @error_reported: set true for vectors error is reported
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* @error_uncorrectable: number of uncorrectable errors
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* @error_count: number of correctable errors in the sector
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* @error_loc: buffer for error location
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*
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*/
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struct elm_errorvec {
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bool error_reported;
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bool error_uncorrectable;
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int error_count;
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int error_loc[16];
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};
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#if IS_ENABLED(CONFIG_MTD_NAND_OMAP_BCH)
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void elm_decode_bch_error_page(struct device *dev, u8 *ecc_calc,
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struct elm_errorvec *err_vec);
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int elm_config(struct device *dev, enum bch_ecc bch_type,
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int ecc_steps, int ecc_step_size, int ecc_syndrome_size);
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#else
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static inline void
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elm_decode_bch_error_page(struct device *dev, u8 *ecc_calc,
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struct elm_errorvec *err_vec)
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{
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}
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static inline int elm_config(struct device *dev, enum bch_ecc bch_type,
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int ecc_steps, int ecc_step_size,
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int ecc_syndrome_size)
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{
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return -ENOSYS;
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}
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#endif /* CONFIG_MTD_NAND_ECC_BCH */
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#endif /* __ELM_H */
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