4.19-stable review patch. If anyone has any objections, please let me know.
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From: Ricardo Ribalda Delgado ricardo.ribalda@gmail.com
commit 6c925b333368cda4e1b0513b07f72316c0e7edd7 upstream.
We should only iomap the area of the chip that is memory mapped. Otherwise we could be mapping devices beyond the memory space or that belong to other devices.
Signed-off-by: Ricardo Ribalda Delgado ricardo.ribalda@gmail.com Fixes: ebd71e3a4861 ("mtd: maps: gpio-addr-flash: fix warnings and make more portable") Cc: stable@vger.kernel.org Signed-off-by: Boris Brezillon boris.brezillon@bootlin.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- drivers/mtd/maps/gpio-addr-flash.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/mtd/maps/gpio-addr-flash.c +++ b/drivers/mtd/maps/gpio-addr-flash.c @@ -238,7 +238,7 @@ static int gpio_flash_probe(struct platf state->map.copy_to = gf_copy_to; state->map.bankwidth = pdata->width; state->map.size = state->win_size * (1 << state->gpio_count); - state->map.virt = ioremap_nocache(memory->start, state->map.size); + state->map.virt = ioremap_nocache(memory->start, state->win_size); if (!state->map.virt) return -ENOMEM;