Messages in this thread | | | Date | Sat, 7 Jul 2018 11:59:16 +0200 | From | Boris Brezillon <> | Subject | Re: [PATCH v2] mtd: gpio_flash: add error handling for ioremap_nocache |
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On Fri, 22 Jun 2018 09:52:20 +0800 Zhouyang Jia <jiazhouyang09@gmail.com> wrote:
> 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 <jiazhouyang09@gmail.com>
Applied.
Thanks,
Boris
> --- > v1->v2: > - Move the test just after the ioremap_nocache() call. > --- > drivers/mtd/maps/gpio-addr-flash.c | 3 +++ > 1 file changed, 3 insertions(+) > > diff --git a/drivers/mtd/maps/gpio-addr-flash.c b/drivers/mtd/maps/gpio-addr-flash.c > index 385305e..9d97236 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; >
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