X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=drivers%2Fchar%2Fwatchdog%2Fpcwd_usb.c;h=50325530e0e0efd220ff801852215082008f5c08;hb=90ad8654ffeb336af8c878fdf7bc72e2ac72467a;hp=cdfe0db28784e98563bf6a5cf0d3a5364f9f419e;hpb=a91482bdcc2e0f6035702e46f1b99043a0893346;p=linux-2.6.git

diff --git a/drivers/char/watchdog/pcwd_usb.c b/drivers/char/watchdog/pcwd_usb.c
index cdfe0db28..50325530e 100644
--- a/drivers/char/watchdog/pcwd_usb.c
+++ b/drivers/char/watchdog/pcwd_usb.c
@@ -329,6 +329,10 @@ static int usb_pcwd_get_temperature(struct usb_pcwd_private *usb_pcwd, int *temp
 static ssize_t usb_pcwd_write(struct file *file, const char __user *data,
 			      size_t len, loff_t *ppos)
 {
+	/* Can't seek (pwrite) on this device  */
+	if (ppos != &file->f_pos)
+		return -ESPIPE;
+
 	/* See if we got the magic character 'V' and reload the timer */
 	if (len) {
 		if (!nowayout) {
@@ -441,7 +445,7 @@ static int usb_pcwd_open(struct inode *inode, struct file *file)
 	/* Activate */
 	usb_pcwd_start(usb_pcwd_device);
 	usb_pcwd_keepalive(usb_pcwd_device);
-	return nonseekable_open(inode, file);
+	return 0;
 }
 
 static int usb_pcwd_release(struct inode *inode, struct file *file)
@@ -469,6 +473,10 @@ static ssize_t usb_pcwd_temperature_read(struct file *file, char __user *data,
 {
 	int temperature;
 
+	/* Can't seek (pwrite) on this device  */
+	if (ppos != &file->f_pos)
+		return -ESPIPE;
+
 	if (usb_pcwd_get_temperature(usb_pcwd_device, &temperature))
 		return -EFAULT;
 
@@ -480,7 +488,7 @@ static ssize_t usb_pcwd_temperature_read(struct file *file, char __user *data,
 
 static int usb_pcwd_temperature_open(struct inode *inode, struct file *file)
 {
-	return nonseekable_open(inode, file);
+	return 0;
 }
 
 static int usb_pcwd_temperature_release(struct inode *inode, struct file *file)