add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/drivers/mtd/sm_ftl.c
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@@ -1,10 +1,7 @@
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+// SPDX-License-Identifier: GPL-2.0-only
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 /*
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  * Copyright © 2009 - Maxim Levitsky
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  * SmartMedia/xD translation layer
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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 version 2 as
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- * published by the Free Software Foundation.
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  */
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 #include <linux/kernel.h>
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@@ -221,14 +218,18 @@
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 {
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 	uint8_t ecc[3];
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-	__nand_calculate_ecc(buffer, SM_SMALL_PAGE, ecc);
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-	if (__nand_correct_data(buffer, ecc, oob->ecc1, SM_SMALL_PAGE) < 0)
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+	__nand_calculate_ecc(buffer, SM_SMALL_PAGE, ecc,
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+			     IS_ENABLED(CONFIG_MTD_NAND_ECC_SW_HAMMING_SMC));
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+	if (__nand_correct_data(buffer, ecc, oob->ecc1, SM_SMALL_PAGE,
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+				IS_ENABLED(CONFIG_MTD_NAND_ECC_SW_HAMMING_SMC)) < 0)
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 		return -EIO;
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 	buffer += SM_SMALL_PAGE;
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-	__nand_calculate_ecc(buffer, SM_SMALL_PAGE, ecc);
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-	if (__nand_correct_data(buffer, ecc, oob->ecc2, SM_SMALL_PAGE) < 0)
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+	__nand_calculate_ecc(buffer, SM_SMALL_PAGE, ecc,
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+			     IS_ENABLED(CONFIG_MTD_NAND_ECC_SW_HAMMING_SMC));
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+	if (__nand_correct_data(buffer, ecc, oob->ecc2, SM_SMALL_PAGE,
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+				IS_ENABLED(CONFIG_MTD_NAND_ECC_SW_HAMMING_SMC)) < 0)
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 		return -EIO;
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 	return 0;
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 }
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@@ -246,7 +247,8 @@
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 	/* FTL can contain -1 entries that are by default filled with bits */
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 	if (block == -1) {
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-		memset(buffer, 0xFF, SM_SECTOR_SIZE);
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+		if (buffer)
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+			memset(buffer, 0xFF, SM_SECTOR_SIZE);
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 		return 0;
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 	}
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@@ -393,11 +395,13 @@
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 		}
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 		if (ftl->smallpagenand) {
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-			__nand_calculate_ecc(buf + boffset,
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-						SM_SMALL_PAGE, oob.ecc1);
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+			__nand_calculate_ecc(buf + boffset, SM_SMALL_PAGE,
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+					oob.ecc1,
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+					IS_ENABLED(CONFIG_MTD_NAND_ECC_SW_HAMMING_SMC));
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 			__nand_calculate_ecc(buf + boffset + SM_SMALL_PAGE,
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-						SM_SMALL_PAGE, oob.ecc2);
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+					SM_SMALL_PAGE, oob.ecc2,
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+					IS_ENABLED(CONFIG_MTD_NAND_ECC_SW_HAMMING_SMC));
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 		}
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 		if (!sm_write_sector(ftl, zone, block, boffset,
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 							buf + boffset, &oob))
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@@ -771,8 +775,11 @@
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 			continue;
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 		/* Read the oob of first sector */
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-		if (sm_read_sector(ftl, zone_num, block, 0, NULL, &oob))
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+		if (sm_read_sector(ftl, zone_num, block, 0, NULL, &oob)) {
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+			kfifo_free(&zone->free_sectors);
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+			kfree(zone->lba_to_phys_table);
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 			return -EIO;
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+		}
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 		/* Test to see if block is erased. It is enough to test
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 			first sector, because erase happens in one shot */
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@@ -1091,9 +1098,9 @@
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 {
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 	struct sm_ftl *ftl = dev->priv;
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-	mutex_lock(&ftl->mutex);
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 	del_timer_sync(&ftl->timer);
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 	cancel_work_sync(&ftl->flush_work);
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+	mutex_lock(&ftl->mutex);
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 	sm_cache_flush(ftl);
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 	mutex_unlock(&ftl->mutex);
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 }