[PATCH] SBC EPX does not check/claim I/O ports it uses (2nd Edition)
Signed-off-by: Alan Cox <alan@redhat.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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@ -25,6 +25,7 @@
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#include <linux/notifier.h>
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#include <linux/reboot.h>
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#include <linux/init.h>
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#include <linux/ioport.h>
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#include <asm/uaccess.h>
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#include <asm/io.h>
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@ -181,11 +182,14 @@ static int __init watchdog_init(void)
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{
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int ret;
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if (!request_region(EPXC3_WATCHDOG_CTL_REG, 2, "epxc3_watchdog"))
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return -EBUSY;
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ret = register_reboot_notifier(&epx_c3_notifier);
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if (ret) {
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printk(KERN_ERR PFX "cannot register reboot notifier "
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"(err=%d)\n", ret);
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return ret;
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goto out;
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}
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ret = misc_register(&epx_c3_miscdev);
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@ -193,18 +197,23 @@ static int __init watchdog_init(void)
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printk(KERN_ERR PFX "cannot register miscdev on minor=%d "
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"(err=%d)\n", WATCHDOG_MINOR, ret);
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unregister_reboot_notifier(&epx_c3_notifier);
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return ret;
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goto out;
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}
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printk(banner);
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return 0;
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out:
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release_region(EPXC3_WATCHDOG_CTL_REG, 2);
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return ret;
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}
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static void __exit watchdog_exit(void)
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{
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misc_deregister(&epx_c3_miscdev);
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unregister_reboot_notifier(&epx_c3_notifier);
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release_region(EPXC3_WATCHDOG_CTL_REG, 2);
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}
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module_init(watchdog_init);
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