From c31106b7af32d845e56acb705f07e187f9b519e6 Mon Sep 17 00:00:00 2001 From: Zhouyang Jia Date: Fri, 22 Jun 2018 09:52:20 +0800 Subject: mtd: maps: gpio-addr-flash: add error handling for ioremap_nocache When ioremap_nocache fails, the lack of error-handling code may cause unexpected results. This patch adds error-handling code after calling ioremap_nocache. Signed-off-by: Zhouyang Jia Signed-off-by: Boris Brezillon --- drivers/mtd/maps/gpio-addr-flash.c | 3 +++ 1 file changed, 3 insertions(+) (limited to 'drivers/mtd/maps') diff --git a/drivers/mtd/maps/gpio-addr-flash.c b/drivers/mtd/maps/gpio-addr-flash.c index 385305e66fd1..9d9723693217 100644 --- a/drivers/mtd/maps/gpio-addr-flash.c +++ b/drivers/mtd/maps/gpio-addr-flash.c @@ -239,6 +239,9 @@ static int gpio_flash_probe(struct platform_device *pdev) 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); + if (!state->map.virt) + return -ENOMEM; + state->map.phys = NO_XIP; state->map.map_priv_1 = (unsigned long)state; -- cgit v1.2.3