diff options
Diffstat (limited to 'drivers/rtc/rtc-dev.c')
| -rw-r--r-- | drivers/rtc/rtc-dev.c | 23 |
1 files changed, 14 insertions, 9 deletions
diff --git a/drivers/rtc/rtc-dev.c b/drivers/rtc/rtc-dev.c index b1e3e6179e56..2011567005f9 100644 --- a/drivers/rtc/rtc-dev.c +++ b/drivers/rtc/rtc-dev.c @@ -58,7 +58,7 @@ rtc_dev_read(struct file *file, char __user *buf, size_t count, loff_t *ppos) unsigned long data; ssize_t ret; - if (count < sizeof(unsigned long)) + if (count != sizeof(unsigned int) && count < sizeof(unsigned long)) return -EINVAL; add_wait_queue(&rtc->irq_queue, &wait); @@ -90,11 +90,16 @@ rtc_dev_read(struct file *file, char __user *buf, size_t count, loff_t *ppos) if (ret == 0) { /* Check for any data updates */ if (rtc->ops->read_callback) - data = rtc->ops->read_callback(rtc->class_dev.dev, data); - - ret = put_user(data, (unsigned long __user *)buf); - if (ret == 0) - ret = sizeof(unsigned long); + data = rtc->ops->read_callback(rtc->class_dev.dev, + data); + + if (sizeof(int) != sizeof(long) && + count == sizeof(unsigned int)) + ret = put_user(data, (unsigned int __user *)buf) ?: + sizeof(unsigned int); + else + ret = put_user(data, (unsigned long __user *)buf) ?: + sizeof(unsigned long); } return ret; } @@ -136,13 +141,13 @@ static int rtc_dev_ioctl(struct inode *inode, struct file *file, /* try the driver's ioctl interface */ if (ops->ioctl) { err = ops->ioctl(class_dev->dev, cmd, arg); - if (err != -EINVAL) + if (err != -ENOIOCTLCMD) return err; } /* if the driver does not provide the ioctl interface * or if that particular ioctl was not implemented - * (-EINVAL), we will try to emulate here. + * (-ENOIOCTLCMD), we will try to emulate here. */ switch (cmd) { @@ -228,7 +233,7 @@ static int rtc_dev_ioctl(struct inode *inode, struct file *file, break; default: - err = -EINVAL; + err = -ENOTTY; break; } |