mtd: spi-nor: Delay the initialization of bank_size

Bank size is derived from the chip's size, which in
spi_nor_init_default_params() can still be zero if the flash size is
not specified at flash declaration. Let the flash size be updated
by parsing SFDP and do the initialization of the bank size in
spi_nor_late_init_params(). Flashes that don't define the SFDP tables
must specify the flash size at declaration.

Fixes: 9d6c5d64f028 ("mtd: spi-nor: Introduce the concept of bank")
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/r/20230331194620.839899-1-miquel.raynal@bootlin.com
[ta: drop superfluous initialization in spi_nor_init_default_params(),
reword commit message, add Fixes tag.]
Signed-off-by: Tudor Ambarus <tudor.ambarus@linaro.org>

diff --git a/drivers/mtd/spi-nor/core.c b/drivers/mtd/spi-nor/core.c
index c6a313d87c1797ac17d3e1a5f126857523a867c3..35295d98542fd449ab685e99598ae9fdb27baf85 100644 (file)
--- a/drivers/mtd/spi-nor/core.c
+++ b/drivers/mtd/spi-nor/core.c
@@ -2882,6 +2882,8 @@ static void spi_nor_late_init_params(struct spi_nor *nor)
         */
        if (nor->flags & SNOR_F_HAS_LOCK && !nor->params->locking_ops)
                spi_nor_init_default_locking_ops(nor);
+
+       nor->params->bank_size = div64_u64(nor->params->size, nor->info->n_banks);
 }
 
 /**
@@ -2948,7 +2950,6 @@ static void spi_nor_init_default_params(struct spi_nor *nor)
        /* Set SPI NOR sizes. */
        params->writesize = 1;
        params->size = (u64)info->sector_size * info->n_sectors;
-       params->bank_size = div64_u64(params->size, info->n_banks);
        params->page_size = info->page_size;
 
        if (!(info->flags & SPI_NOR_NO_FR)) {