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Commit 742e4b63 authored by Wim Van Sebroeck's avatar Wim Van Sebroeck
Browse files

watchdog: jz4740_wdt - fix magic character checking 



When writing to /dev/watchdog all characters should be checked
for the magic character 'V'.

Signed-off-by: default avatarWim Van Sebroeck <wim@iguana.be>
parent f865c352

drivers/watchdog/jz4740_wdt.c

+11 −4
Original line number Diff line number Diff line
@@ -130,11 +130,18 @@ static ssize_t jz4740_wdt_write(struct file *file, const char *data, 
		size_t len, loff_t *ppos)

{

	if (len) {

		if (data[len-1] == 'V')

			set_bit(WDT_OK_TO_CLOSE, &jz4740_wdt.status);

		else

		size_t i;



		clear_bit(WDT_OK_TO_CLOSE, &jz4740_wdt.status);

		for (i = 0; i != len; i++) {

			char c;



			if (get_user(c, data + i))

				return -EFAULT;



			if (c == 'V')

				set_bit(WDT_OK_TO_CLOSE, &jz4740_wdt.status);

		}

		jz4740_wdt_service();

	}