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53 lines
1.3 KiB
Diff
53 lines
1.3 KiB
Diff
--- a/drivers/mtd/nand/raw/brcmnand/brcmnand.c
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+++ b/drivers/mtd/nand/raw/brcmnand/brcmnand.c
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@@ -1003,33 +1003,30 @@ static int brcmnand_hamming_ooblayout_fr
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struct brcmnand_cfg *cfg = &host->hwcfg;
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int sas = cfg->spare_area_size << cfg->sector_size_1k;
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int sectors = cfg->page_size / (512 << cfg->sector_size_1k);
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+ u32 next;
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- if (section >= sectors * 2)
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+ if (section > sectors)
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return -ERANGE;
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- oobregion->offset = (section / 2) * sas;
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+ next = (section * sas);
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+ if (section < sectors)
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+ next += 6;
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- if (section & 1) {
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- oobregion->offset += 9;
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- oobregion->length = 7;
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+ if (section) {
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+ oobregion->offset = ((section - 1) * sas) + 9;
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} else {
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- oobregion->length = 6;
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-
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- /* First sector of each page may have BBI */
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- if (!section) {
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- /*
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- * Small-page NAND use byte 6 for BBI while large-page
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- * NAND use bytes 0 and 1.
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- */
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- if (cfg->page_size > 512) {
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- oobregion->offset += 2;
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- oobregion->length -= 2;
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- } else {
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- oobregion->length--;
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- }
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+ if (cfg->page_size > 512) {
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+ /* Large page NAND uses first 2 bytes for BBI */
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+ oobregion->offset = 2;
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+ } else {
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+ /* Small page NAND uses last byte before ECC for BBI */
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+ oobregion->offset = 0;
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+ next--;
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}
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}
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+ oobregion->length = next - oobregion->offset;
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+
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return 0;
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}
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