diff --git a/drivers/mtd/spi-nor/core.c b/drivers/mtd/spi-nor/core.c
index 286155002cdc..f4cc2eafcc5e 100644
--- a/drivers/mtd/spi-nor/core.c
+++ b/drivers/mtd/spi-nor/core.c
@@ -2999,7 +2999,7 @@ 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->size = info->size;
 	params->bank_size = params->size;
 	params->page_size = info->page_size;
 
diff --git a/drivers/mtd/spi-nor/core.h b/drivers/mtd/spi-nor/core.h
index dfc20a3296fb..12c35409493b 100644
--- a/drivers/mtd/spi-nor/core.h
+++ b/drivers/mtd/spi-nor/core.h
@@ -443,9 +443,9 @@ struct spi_nor_fixups {
  * @id:             the flash's ID bytes. The first three bytes are the
  *                  JEDIC ID. JEDEC ID zero means "no ID" (mostly older chips).
  * @id_len:         the number of bytes of ID.
+ * @size:           the size of the flash in bytes.
  * @sector_size:    the size listed here is what works with SPINOR_OP_SE, which
  *                  isn't necessarily called a "sector" by the vendor.
- * @n_sectors:      the number of sectors.
  * @n_banks:        the number of banks.
  * @page_size:      the flash's page size.
  * @addr_nbytes:    number of address bytes to send.
@@ -505,8 +505,8 @@ struct flash_info {
 	char *name;
 	u8 id[SPI_NOR_MAX_ID_LEN];
 	u8 id_len;
+	size_t size;
 	unsigned sector_size;
-	u16 n_sectors;
 	u16 page_size;
 	u8 n_banks;
 	u8 addr_nbytes;
@@ -556,8 +556,8 @@ struct flash_info {
 	.id_len = 6
 
 #define SPI_NOR_GEOMETRY(_sector_size, _n_sectors, _n_banks)		\
+	.size = (_sector_size) * (_n_sectors),				\
 	.sector_size = (_sector_size),					\
-	.n_sectors = (_n_sectors),					\
 	.page_size = 256,						\
 	.n_banks = (_n_banks)
 
@@ -575,8 +575,8 @@ struct flash_info {
 	SPI_NOR_GEOMETRY((_sector_size), (_n_sectors), 1),
 
 #define CAT25_INFO(_sector_size, _n_sectors, _page_size, _addr_nbytes)	\
+		.size = (_sector_size) * (_n_sectors),			\
 		.sector_size = (_sector_size),				\
-		.n_sectors = (_n_sectors),				\
 		.page_size = (_page_size),				\
 		.n_banks = 1,						\
 		.addr_nbytes = (_addr_nbytes),				\
diff --git a/drivers/mtd/spi-nor/swp.c b/drivers/mtd/spi-nor/swp.c
index 5ab9d5324860..40bf52867095 100644
--- a/drivers/mtd/spi-nor/swp.c
+++ b/drivers/mtd/spi-nor/swp.c
@@ -34,17 +34,18 @@ static u8 spi_nor_get_sr_tb_mask(struct spi_nor *nor)
 static u64 spi_nor_get_min_prot_length_sr(struct spi_nor *nor)
 {
 	unsigned int bp_slots, bp_slots_needed;
+	unsigned int sector_size = nor->info->sector_size;
+	u64 n_sectors = div_u64(nor->params->size, sector_size);
 	u8 mask = spi_nor_get_sr_bp_mask(nor);
 
 	/* Reserved one for "protect none" and one for "protect all". */
 	bp_slots = (1 << hweight8(mask)) - 2;
-	bp_slots_needed = ilog2(nor->info->n_sectors);
+	bp_slots_needed = ilog2(n_sectors);
 
 	if (bp_slots_needed > bp_slots)
-		return nor->info->sector_size <<
-			(bp_slots_needed - bp_slots);
+		return sector_size << (bp_slots_needed - bp_slots);
 	else
-		return nor->info->sector_size;
+		return sector_size;
 }
 
 static void spi_nor_get_locked_range_sr(struct spi_nor *nor, u8 sr, loff_t *ofs,
diff --git a/drivers/mtd/spi-nor/xilinx.c b/drivers/mtd/spi-nor/xilinx.c
index 34267591282c..284e2e4970ab 100644
--- a/drivers/mtd/spi-nor/xilinx.c
+++ b/drivers/mtd/spi-nor/xilinx.c
@@ -23,8 +23,8 @@
 
 #define S3AN_INFO(_jedec_id, _n_sectors, _page_size)			\
 		SPI_NOR_ID(_jedec_id, 0),				\
+		.size = 8 * (_page_size) * (_n_sectors),		\
 		.sector_size = (8 * (_page_size)),			\
-		.n_sectors = (_n_sectors),				\
 		.page_size = (_page_size),				\
 		.n_banks = 1,						\
 		.flags = SPI_NOR_NO_FR
@@ -138,7 +138,7 @@ static int xilinx_nor_setup(struct spi_nor *nor,
 		page_size = (nor->params->page_size == 264) ? 256 : 512;
 		nor->params->page_size = page_size;
 		nor->mtd.writebufsize = page_size;
-		nor->params->size = 8 * page_size * nor->info->n_sectors;
+		nor->params->size = nor->info->size;
 		nor->mtd.erasesize = 8 * page_size;
 	} else {
 		/* Flash in Default addressing mode */