diff options
Diffstat (limited to 'drivers/usb/class')
| -rw-r--r-- | drivers/usb/class/cdc-acm.c | 23 | ||||
| -rw-r--r-- | drivers/usb/class/usblp.c | 15 |
2 files changed, 20 insertions, 18 deletions
diff --git a/drivers/usb/class/cdc-acm.c b/drivers/usb/class/cdc-acm.c index 97bdeb1c218..6dd339f4c0f 100644 --- a/drivers/usb/class/cdc-acm.c +++ b/drivers/usb/class/cdc-acm.c @@ -60,6 +60,7 @@ #include <linux/tty_flip.h> #include <linux/module.h> #include <linux/smp_lock.h> +#include <linux/mutex.h> #include <asm/uaccess.h> #include <linux/usb.h> #include <linux/usb_cdc.h> @@ -80,7 +81,7 @@ static struct usb_driver acm_driver; static struct tty_driver *acm_tty_driver; static struct acm *acm_table[ACM_TTY_MINORS]; -static DECLARE_MUTEX(open_sem); +static DEFINE_MUTEX(open_mutex); #define ACM_READY(acm) (acm && acm->dev && acm->used) @@ -431,8 +432,8 @@ static int acm_tty_open(struct tty_struct *tty, struct file *filp) int rv = -EINVAL; int i; dbg("Entering acm_tty_open.\n"); - - down(&open_sem); + + mutex_lock(&open_mutex); acm = acm_table[tty->index]; if (!acm || !acm->dev) @@ -474,14 +475,14 @@ static int acm_tty_open(struct tty_struct *tty, struct file *filp) done: err_out: - up(&open_sem); + mutex_unlock(&open_mutex); return rv; full_bailout: usb_kill_urb(acm->ctrlurb); bail_out: acm->used--; - up(&open_sem); + mutex_unlock(&open_mutex); return -EIO; } @@ -507,7 +508,7 @@ static void acm_tty_close(struct tty_struct *tty, struct file *filp) if (!acm || !acm->used) return; - down(&open_sem); + mutex_lock(&open_mutex); if (!--acm->used) { if (acm->dev) { acm_set_control(acm, acm->ctrlout = 0); @@ -518,7 +519,7 @@ static void acm_tty_close(struct tty_struct *tty, struct file *filp) } else acm_tty_unregister(acm); } - up(&open_sem); + mutex_unlock(&open_mutex); } static int acm_tty_write(struct tty_struct *tty, const unsigned char *buf, int count) @@ -1013,9 +1014,9 @@ static void acm_disconnect(struct usb_interface *intf) return; } - down(&open_sem); + mutex_lock(&open_mutex); if (!usb_get_intfdata(intf)) { - up(&open_sem); + mutex_unlock(&open_mutex); return; } acm->dev = NULL; @@ -1045,11 +1046,11 @@ static void acm_disconnect(struct usb_interface *intf) if (!acm->used) { acm_tty_unregister(acm); - up(&open_sem); + mutex_unlock(&open_mutex); return; } - up(&open_sem); + mutex_unlock(&open_mutex); if (acm->tty) tty_hangup(acm->tty); diff --git a/drivers/usb/class/usblp.c b/drivers/usb/class/usblp.c index d34848ac30b..48dee4b8d8e 100644 --- a/drivers/usb/class/usblp.c +++ b/drivers/usb/class/usblp.c @@ -55,6 +55,7 @@ #include <linux/init.h> #include <linux/slab.h> #include <linux/lp.h> +#include <linux/mutex.h> #undef DEBUG #include <linux/usb.h> @@ -223,7 +224,7 @@ static int usblp_cache_device_id_string(struct usblp *usblp); /* forward reference to make our lives easier */ static struct usb_driver usblp_driver; -static DECLARE_MUTEX(usblp_sem); /* locks the existence of usblp's */ +static DEFINE_MUTEX(usblp_mutex); /* locks the existence of usblp's */ /* * Functions for usblp control messages. @@ -351,7 +352,7 @@ static int usblp_open(struct inode *inode, struct file *file) if (minor < 0) return -ENODEV; - down (&usblp_sem); + mutex_lock (&usblp_mutex); retval = -ENODEV; intf = usb_find_interface(&usblp_driver, minor); @@ -399,7 +400,7 @@ static int usblp_open(struct inode *inode, struct file *file) } } out: - up (&usblp_sem); + mutex_unlock (&usblp_mutex); return retval; } @@ -425,13 +426,13 @@ static int usblp_release(struct inode *inode, struct file *file) { struct usblp *usblp = file->private_data; - down (&usblp_sem); + mutex_lock (&usblp_mutex); usblp->used = 0; if (usblp->present) { usblp_unlink_urbs(usblp); } else /* finish cleanup from disconnect */ usblp_cleanup (usblp); - up (&usblp_sem); + mutex_unlock (&usblp_mutex); return 0; } @@ -1152,7 +1153,7 @@ static void usblp_disconnect(struct usb_interface *intf) device_remove_file(&intf->dev, &dev_attr_ieee1284_id); - down (&usblp_sem); + mutex_lock (&usblp_mutex); down (&usblp->sem); usblp->present = 0; usb_set_intfdata (intf, NULL); @@ -1166,7 +1167,7 @@ static void usblp_disconnect(struct usb_interface *intf) if (!usblp->used) usblp_cleanup (usblp); - up (&usblp_sem); + mutex_unlock (&usblp_mutex); } static struct usb_device_id usblp_ids [] = { |