diff options
| author | Uwe Kleine-König <u.kleine-koenig@pengutronix.de> | 2015-08-12 11:15:55 +0300 |
|---|---|---|
| committer | Wim Van Sebroeck <wim@iguana.be> | 2015-09-09 22:37:15 +0300 |
| commit | de5f71222bd544558d81701454eb457b295de96e (patch) | |
| tree | ba47083a02911e559325f1c9e2416911d7d56f9d /drivers/watchdog/mpc8xxx_wdt.c | |
| parent | f0ded83b96d27b27db0015e701cfd916330e3c50 (diff) | |
| download | linux-de5f71222bd544558d81701454eb457b295de96e.tar.xz | |
watchdog: mpc8xxx: use devm_ioremap_resource to map memory
This simplifies the error paths and device unbinding.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
Diffstat (limited to 'drivers/watchdog/mpc8xxx_wdt.c')
| -rw-r--r-- | drivers/watchdog/mpc8xxx_wdt.c | 19 |
1 files changed, 7 insertions, 12 deletions
diff --git a/drivers/watchdog/mpc8xxx_wdt.c b/drivers/watchdog/mpc8xxx_wdt.c index fb1fe967cf57..a6790fcfa69b 100644 --- a/drivers/watchdog/mpc8xxx_wdt.c +++ b/drivers/watchdog/mpc8xxx_wdt.c @@ -142,8 +142,7 @@ static struct watchdog_device mpc8xxx_wdt_dev = { static int mpc8xxx_wdt_probe(struct platform_device *ofdev) { int ret; - const struct of_device_id *match; - struct device_node *np = ofdev->dev.of_node; + struct resource *res; const struct mpc8xxx_wdt_type *wdt_type; u32 freq = fsl_get_sys_freq(); bool enabled; @@ -156,15 +155,15 @@ static int mpc8xxx_wdt_probe(struct platform_device *ofdev) if (!freq || freq == -1) return -EINVAL; - wd_base = of_iomap(np, 0); - if (!wd_base) - return -ENOMEM; + res = platform_get_resource(ofdev, IORESOURCE_MEM, 0); + wd_base = devm_ioremap_resource(&ofdev->dev, res); + if (IS_ERR(wd_base)) + return PTR_ERR(wd_base); enabled = in_be32(&wd_base->swcrr) & SWCRR_SWEN; if (!enabled && wdt_type->hw_enabled) { pr_info("could not be enabled in software\n"); - ret = -ENOSYS; - goto err_unmap; + return -ENOSYS; } /* Calculate the timeout in seconds */ @@ -177,7 +176,7 @@ static int mpc8xxx_wdt_probe(struct platform_device *ofdev) ret = watchdog_register_device(&mpc8xxx_wdt_dev); if (ret) { pr_err("cannot register watchdog device (err=%d)\n", ret); - goto err_unmap; + return ret; } pr_info("WDT driver for MPC8xxx initialized. mode:%s timeout=%d (%d seconds)\n", @@ -191,9 +190,6 @@ static int mpc8xxx_wdt_probe(struct platform_device *ofdev) if (enabled) mod_timer(&wdt_timer, jiffies); return 0; -err_unmap: - iounmap(wd_base); - return ret; } static int mpc8xxx_wdt_remove(struct platform_device *ofdev) @@ -202,7 +198,6 @@ static int mpc8xxx_wdt_remove(struct platform_device *ofdev) reset ? "reset" : "machine check exception"); del_timer_sync(&wdt_timer); watchdog_unregister_device(&mpc8xxx_wdt_dev); - iounmap(wd_base); return 0; } |