From 3b5d1981933b25973b02684dccb17d4282fd4d6d Mon Sep 17 00:00:00 2001 From: Lee Jones Date: Thu, 20 Mar 2014 09:20:43 +0000 Subject: [PATCH] mtd: st_spi_fsm: Use device size to determine address width 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 Signed-off-by: Lee Jones Signed-off-by: Brian Norris --- 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 2740ae195ef5..5a1b470ce908 100644 --- a/drivers/mtd/devices/st_spi_fsm.c +++ b/drivers/mtd/devices/st_spi_fsm.c @@ -671,6 +671,10 @@ 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 > 0x1000000) + info->flags |= FLASH_FLAG_32BIT_ADDR; + fsm->mtd.dev.parent = &pdev->dev; fsm->mtd.type = MTD_NORFLASH; fsm->mtd.writesize = 4;