#include <linux/errno.h>
#include <linux/major.h>
#include <linux/sched.h>
-#include <linux/smp_lock.h>
+#include <linux/mutex.h>
#include <linux/interrupt.h>
#include <linux/poll.h>
#include <linux/init.h>
spinlock_t lock;
} sync_port;
+static DEFINE_MUTEX(sync_serial_mutex);
static int etrax_sync_serial_init(void);
static void initialize_port(int portnbr);
static inline int sync_data_avail(struct sync_port *port);
static int sync_serial_release(struct inode*, struct file*);
static unsigned int sync_serial_poll(struct file *filp, poll_table *wait);
-static int sync_serial_ioctl(struct inode*, struct file*,
+static int sync_serial_ioctl(struct file *,
unsigned int cmd, unsigned long arg);
static ssize_t sync_serial_write(struct file * file, const char * buf,
size_t count, loff_t *ppos);
#define NBR_PORTS ARRAY_SIZE(ports)
static const struct file_operations sync_serial_fops = {
- .owner = THIS_MODULE,
- .write = sync_serial_write,
- .read = sync_serial_read,
- .poll = sync_serial_poll,
- .ioctl = sync_serial_ioctl,
- .open = sync_serial_open,
- .release = sync_serial_release
+ .owner = THIS_MODULE,
+ .write = sync_serial_write,
+ .read = sync_serial_read,
+ .poll = sync_serial_poll,
+ .unlocked_ioctl = sync_serial_ioctl,
+ .open = sync_serial_open,
+ .release = sync_serial_release,
+ .llseek = noop_llseek,
};
static int __init etrax_sync_serial_init(void)
reg_dma_rw_cfg cfg = {.en = regk_dma_yes};
reg_dma_rw_intr_mask intr_mask = {.data = regk_dma_yes};
- lock_kernel();
+ mutex_lock(&sync_serial_mutex);
DEBUG(printk(KERN_DEBUG "Open sync serial port %d\n", dev));
if (dev < 0 || dev >= NBR_PORTS || !ports[dev].enabled)
port->busy++;
ret = 0;
out:
- unlock_kernel();
+ mutex_unlock(&sync_serial_mutex);
return ret;
}
return mask;
}
-static int sync_serial_ioctl(struct inode *inode, struct file *file,
+static int sync_serial_ioctl(struct file *file,
unsigned int cmd, unsigned long arg)
{
int return_val = 0;
return return_val;
}
+static long sync_serial_ioctl(struct file *file,
+ unsigned int cmd, unsigned long arg)
+{
+ long ret;
+
+ mutex_lock(&sync_serial_mutex);
+ ret = sync_serial_ioctl_unlocked(file, cmd, arg);
+ mutex_unlock(&sync_serial_mutex);
+
+ return ret;
+}
+
/* NOTE: sync_serial_write does not support concurrency */
static ssize_t sync_serial_write(struct file *file, const char *buf,
size_t count, loff_t *ppos)