4.19-stable review patch. If anyone has any objections, please let me know.
------------------ From: Ricardo Ribalda Delgado <[email protected]> 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 <[email protected]> Fixes: ebd71e3a4861 ("mtd: maps: gpio-addr-flash: fix warnings and make more portable") Cc: <[email protected]> Signed-off-by: Boris Brezillon <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]> --- 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;
