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mtd: spi-nor: Rewrite rem_bank_len calculation

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Rewrite the code to make it clear exactly where the
SNOR_F_HAS_PARALLEL flag leads to *2 and /2 operation
compared to regular code path. No functional change.

Fixes: 5d40b3d384 ("mtd: spi-nor: Add parallel and stacked memories support")
Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org>
This commit is contained in:
Marek Vasut 2024-10-26 22:16:24 +02:00 • committed by Tom Rini
parent a21cfc4e7c
commit 003157bd1c
1 changed files with 8 additions and 7 deletions
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15
drivers/mtd/spi/spi-nor-core.c
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@ -1593,13 +1593,14 @@ static int spi_nor_read(struct mtd_info *mtd, loff_t from, size_t len,
}
while (len) {
if (nor->flags & SNOR_F_HAS_PARALLEL) {
bank = (u32)from / (SZ_16M << 0x01);
rem_bank_len = ((SZ_16M << 0x01) * (bank + 1)) - from;
} else {
bank = (u32)from / SZ_16M;
rem_bank_len = (SZ_16M * (bank + 1)) - from;
}
bank = (u32)from / SZ_16M;
if (nor->flags & SNOR_F_HAS_PARALLEL)
bank /= 2;
rem_bank_len = SZ_16M * (bank + 1);
if (nor->flags & SNOR_F_HAS_PARALLEL)
rem_bank_len *= 2;
rem_bank_len -= from;
offset = from;