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mtd: nand: Fix nand write error with bad block addresses above 32-bit

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Nand writes should skip the bad blocks with "nand write" command.
In case of bad blocks with above 32-bit address, nand_block_isbad()
returns false due to truncated bad block address.

In below code segment,

	if (nand_block_isbad(mtd, offset & ~(mtd->erasesize - 1)))

offset is 64-bit and mtd->erasesize is 32-bit, hence the truncation is
happening. Cast 'mtd->erasesize' with loff_t to fix this issue.

Signed-off-by: T Karthik Reddy <t.karthik.reddy@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
This commit is contained in:
T Karthik Reddy
2020-08-31 14:27:37 +02:00
committed by Tom Rini
parent 142775a52b
commit 1e2c5bb9e7
1 changed files with 3 additions and 3 deletions
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6
drivers/mtd/nand/raw/nand_util.c
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@@ -635,14 +635,14 @@ int nand_write_skip_bad(struct mtd_info *mtd, loff_t offset, size_t *length,
} }
while (left_to_write > 0) { while (left_to_write > 0) {
loff_t block_start = offset & ~(loff_t)(mtd->erasesize - 1);
size_t block_offset = offset & (mtd->erasesize - 1); size_t block_offset = offset & (mtd->erasesize - 1);
size_t write_size, truncated_write_size; size_t write_size, truncated_write_size;
WATCHDOG_RESET(); WATCHDOG_RESET();
if (nand_block_isbad(mtd, offset & ~(mtd->erasesize - 1))) { if (nand_block_isbad(mtd, block_start)) {
printf("Skip bad block 0x%08llx\n", printf("Skip bad block 0x%08llx\n", block_start);
offset & ~(mtd->erasesize - 1));
offset += mtd->erasesize - block_offset; offset += mtd->erasesize - block_offset;
continue; continue;
} }