On Mon, Oct 17, 2016 at 09:50:51AM +0200, Steffen Trumtrar wrote:
> Port the linux v4.8-rc1 Synopsys DesignWare watchdog driver to barebox.
>
> Signed-off-by: Steffen Trumtrar <s.trumtrar@xxxxxxxxxxxxxx>
> ---
> +static void __noreturn dw_wdt_restart_handle(struct restart_handler *rst)
> +{
> + struct dw_wdt *dw_wdt;
> +
> + dw_wdt = container_of(rst, struct dw_wdt, restart);
> +
> + dw_wdt->wdd.set_timeout(&dw_wdt->wdd, -1);
> +
> + mdelay(1000);
> +
> + hang();
> +}
> +
> +static int dw_wdt_drv_probe(struct device_d *dev)
> +{
> + struct watchdog *wdd;
> + struct dw_wdt *dw_wdt;
> + struct resource *mem;
> + int ret;
> +
> + dw_wdt = xzalloc(sizeof(*dw_wdt));
> +
> + mem = dev_request_mem_resource(dev, 0);
> + dw_wdt->regs = IOMEM(mem->start);
> + if (IS_ERR(dw_wdt->regs))
> + return PTR_ERR(dw_wdt->regs);
Just stumbled upon this. The result of dev_request_mem_resource() must
be error checked, not the IOMEM(). If mem is valid then IOMEM() is valid
aswell.
Sascha
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