[PATCH 11/35] mtd: st_spi_fsm: Use device size to determine address width

[Lee Jones]

Take some known parameters, namely size and number of sectors and use
them to determine weather a device can support 32bit addressing or not.
If it can, set the associated flash capability flag for latter use.

Acked-by Angus Clark <angus.clark at st.com>
Signed-off-by: Lee Jones <lee.jones at linaro.org>
---
 drivers/mtd/devices/st_spi_fsm.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/mtd/devices/st_spi_fsm.c b/drivers/mtd/devices/st_spi_fsm.c
index 68fa12e..1d7a13a0 100644
--- a/drivers/mtd/devices/st_spi_fsm.c
+++ b/drivers/mtd/devices/st_spi_fsm.c
@@ -670,6 +670,10 @@ static int stfsm_probe(struct platform_device *pdev)
 		return -ENODEV;
 	fsm->info = info;
 
+	/* Use device size to determine address width */
+	if (info->sector_size * info->n_sectors > 0xFFFFFF)
+		info->flags |= FLASH_FLAG_32BIT_ADDR;
+
 	platform_set_drvdata(pdev, fsm);
 
 	fsm->mtd.dev.parent	= &pdev->dev;
-- 
1.8.3.2