diff options
| -rw-r--r-- | drivers/char/watchdog/at32ap700x_wdt.c | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/drivers/char/watchdog/at32ap700x_wdt.c b/drivers/char/watchdog/at32ap700x_wdt.c index a3e2887..745d38f 100644 --- a/drivers/char/watchdog/at32ap700x_wdt.c +++ b/drivers/char/watchdog/at32ap700x_wdt.c @@ -223,6 +223,11 @@ static int __init at32_wdt_probe(struct platform_device *pdev) } wdt->regs = ioremap(regs->start, regs->end - regs->start + 1); + if (!wdt->regs) { + ret = -ENOMEM; + dev_dbg(&pdev->dev, "could not map I/O memory\n"); + goto err_free; + } wdt->users = 0; wdt->miscdev.minor = WATCHDOG_MINOR; wdt->miscdev.name = "watchdog"; @@ -238,7 +243,7 @@ static int __init at32_wdt_probe(struct platform_device *pdev) ret = misc_register(&wdt->miscdev); if (ret) { dev_dbg(&pdev->dev, "failed to register wdt miscdev\n"); - goto err_register; + goto err_iounmap; } platform_set_drvdata(pdev, wdt); @@ -247,7 +252,9 @@ static int __init at32_wdt_probe(struct platform_device *pdev) return 0; -err_register: +err_iounmap: + iounmap(wdt->regs); +err_free: kfree(wdt); wdt = NULL; return ret; |
