From 47d17763e987ebd5e9266fe3d9af3b22a64d27d8 Mon Sep 17 00:00:00 2001 From: Hans-Christian Egtvedt Date: Fri, 8 Jun 2007 11:03:01 -0700 Subject: [PATCH] [WATCHDOG] at32ap700x-wdt: add iounmap if probe function fails Signed-off-by: Hans-Christian Egtvedt Cc: Haavard Skinnemoen Signed-off-by: Wim Van Sebroeck Signed-off-by: Andrew Morton --- drivers/char/watchdog/at32ap700x_wdt.c | 11 +++++++++-- 1 file changed, 9 insertions(+), 2 deletions(-) diff --git a/drivers/char/watchdog/at32ap700x_wdt.c b/drivers/char/watchdog/at32ap700x_wdt.c index a3e288701baf..745d38f25190 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; -- 2.39.2