[PATCH] USB: convert the semaphores in the sisusb driver to mutexes

From: Arjan van de Ven <arjan@infradead.org>

Convert the semaphores-used-as-mutex to mutexes in the sisusb video driver;
this required manual checking due to the "return as locked" stuff in this
driver, but the ->lock semaphore is still used as mutex in the end.

Signed-off-by: Arjan van de Ven <arjan@infradead.org>
Cc: Thomas Winischhofer <winischhofer.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

3 files changed, 107 insertions, 105 deletions

diff --git a/drivers/usb/misc/sisusbvga/sisusb.c b/drivers/usb/misc/sisusbvga/sisusb.c
index 196c8794a73c..19aedbc85ea4 100644
--- a/drivers/usb/misc/sisusbvga/sisusb.c
+++ b/drivers/usb/misc/sisusbvga/sisusb.c
@@ -37,6 +37,7 @@
  */
 
 #include <linux/config.h>
+#include <linux/mutex.h>
 #include <linux/module.h>
 #include <linux/kernel.h>
 #include <linux/signal.h>
@@ -102,7 +103,7 @@ MODULE_PARM_DESC(last, "Number of last console to take over (1 - MAX_NR_CONSOLES
 
 static struct usb_driver sisusb_driver;
 
-DECLARE_MUTEX(disconnect_sem);
+DEFINE_MUTEX(disconnect_mutex);
 
 static void
 sisusb_free_buffers(struct sisusb_usb_data *sisusb)
@@ -2552,39 +2553,39 @@ sisusb_open(struct inode *inode, struct file *file)
         struct usb_interface *interface;
         int subminor = iminor(inode);
 
-        down(&disconnect_sem);
+        mutex_lock(&disconnect_mutex);
 
         if (!(interface = usb_find_interface(&sisusb_driver, subminor))) {
                 printk(KERN_ERR "sisusb[%d]: Failed to find interface\n",
                                 subminor);
-                up(&disconnect_sem);
+                mutex_unlock(&disconnect_mutex);
                 return -ENODEV;
         }
 
         if (!(sisusb = usb_get_intfdata(interface))) {
-                up(&disconnect_sem);
+                mutex_unlock(&disconnect_mutex);
                 return -ENODEV;
         }
 
-        down(&sisusb->lock);
+        mutex_lock(&sisusb->lock);
 
         if (!sisusb->present || !sisusb->ready) {
-                up(&sisusb->lock);
-                up(&disconnect_sem);
+                mutex_unlock(&sisusb->lock);
+                mutex_unlock(&disconnect_mutex);
                 return -ENODEV;
         }
 
         if (sisusb->isopen) {
-                up(&sisusb->lock);
-                up(&disconnect_sem);
+                mutex_unlock(&sisusb->lock);
+                mutex_unlock(&disconnect_mutex);
                 return -EBUSY;
         }
 
         if (!sisusb->devinit) {
                 if (sisusb->sisusb_dev->speed == USB_SPEED_HIGH) {
                         if (sisusb_init_gfxdevice(sisusb, 0)) {
-                                up(&sisusb->lock);
-                                up(&disconnect_sem);
+                                mutex_unlock(&sisusb->lock);
+                                mutex_unlock(&disconnect_mutex);
                                 printk(KERN_ERR
                                         "sisusbvga[%d]: Failed to initialize "
                                         "device\n",
@@ -2592,8 +2593,8 @@ sisusb_open(struct inode *inode, struct file *file)
                                 return -EIO;
                         }
                 } else {
-                        up(&sisusb->lock);
-                        up(&disconnect_sem);
+                        mutex_unlock(&sisusb->lock);
+                        mutex_unlock(&disconnect_mutex);
                         printk(KERN_ERR
                                 "sisusbvga[%d]: Device not attached to "
                                 "USB 2.0 hub\n",
@@ -2609,9 +2610,9 @@ sisusb_open(struct inode *inode, struct file *file)
 
         file->private_data = sisusb;
 
-        up(&sisusb->lock);
+        mutex_unlock(&sisusb->lock);
 
-        up(&disconnect_sem);
+        mutex_unlock(&disconnect_mutex);
 
         return 0;
 }
@@ -2642,14 +2643,14 @@ sisusb_release(struct inode *inode, struct file *file)
         struct sisusb_usb_data *sisusb;
         int myminor;
 
-        down(&disconnect_sem);
+        mutex_lock(&disconnect_mutex);
 
         if (!(sisusb = (struct sisusb_usb_data *)file->private_data)) {
-                up(&disconnect_sem);
+                mutex_unlock(&disconnect_mutex);
                 return -ENODEV;
         }
 
-        down(&sisusb->lock);
+        mutex_lock(&sisusb->lock);
 
         if (sisusb->present) {
                 /* Wait for all URBs to finish if device still present */
@@ -2662,12 +2663,12 @@ sisusb_release(struct inode *inode, struct file *file)
         sisusb->isopen = 0;
         file->private_data = NULL;
 
-        up(&sisusb->lock);
+        mutex_unlock(&sisusb->lock);
 
         /* decrement the usage count on our device */
         kref_put(&sisusb->kref, sisusb_delete);
 
-        up(&disconnect_sem);
+        mutex_unlock(&disconnect_mutex);
 
         return 0;
 }
@@ -2685,11 +2686,11 @@ sisusb_read(struct file *file, char __user *buffer, size_t count, loff_t *ppos)
         if (!(sisusb = (struct sisusb_usb_data *)file->private_data))
                 return -ENODEV;
 
-        down(&sisusb->lock);
+        mutex_lock(&sisusb->lock);
 
         /* Sanity check */
         if (!sisusb->present || !sisusb->ready || !sisusb->sisusb_dev) {
-                up(&sisusb->lock);
+                mutex_unlock(&sisusb->lock);
                 return -ENODEV;
         }
 
@@ -2784,7 +2785,7 @@ sisusb_read(struct file *file, char __user *buffer, size_t count, loff_t *ppos)
                     (*ppos) <= SISUSB_PCI_PSEUDO_PCIBASE + 0x5c) {
 
                 if (count != 4) {
-                        up(&sisusb->lock);
+                        mutex_unlock(&sisusb->lock);
                         return -EINVAL;
                 }
 
@@ -2808,7 +2809,7 @@ sisusb_read(struct file *file, char __user *buffer, size_t count, loff_t *ppos)
 
         (*ppos) += bytes_read;
 
-        up(&sisusb->lock);
+        mutex_unlock(&sisusb->lock);
 
         return errno ? errno : bytes_read;
 }
@@ -2827,11 +2828,11 @@ sisusb_write(struct file *file, const char __user *buffer, size_t count,
         if (!(sisusb = (struct sisusb_usb_data *)file->private_data))
                 return -ENODEV;
 
-        down(&sisusb->lock);
+        mutex_lock(&sisusb->lock);
 
         /* Sanity check */
         if (!sisusb->present || !sisusb->ready || !sisusb->sisusb_dev) {
-                up(&sisusb->lock);
+                mutex_unlock(&sisusb->lock);
                 return -ENODEV;
         }
 
@@ -2930,7 +2931,7 @@ sisusb_write(struct file *file, const char __user *buffer, size_t count,
                     (*ppos) <= SISUSB_PCI_PSEUDO_PCIBASE + SISUSB_PCI_PCONFSIZE) {
 
                 if (count != 4) {
-                        up(&sisusb->lock);
+                        mutex_unlock(&sisusb->lock);
                         return -EINVAL;
                 }
 
@@ -2956,7 +2957,7 @@ sisusb_write(struct file *file, const char __user *buffer, size_t count,
 
         (*ppos) += bytes_written;
 
-        up(&sisusb->lock);
+        mutex_unlock(&sisusb->lock);
 
         return errno ? errno : bytes_written;
 }
@@ -2970,11 +2971,11 @@ sisusb_lseek(struct file *file, loff_t offset, int orig)
         if (!(sisusb = (struct sisusb_usb_data *)file->private_data))
                 return -ENODEV;
 
-        down(&sisusb->lock);
+        mutex_lock(&sisusb->lock);
 
         /* Sanity check */
         if (!sisusb->present || !sisusb->ready || !sisusb->sisusb_dev) {
-                up(&sisusb->lock);
+                mutex_unlock(&sisusb->lock);
                 return -ENODEV;
         }
 
@@ -2994,7 +2995,7 @@ sisusb_lseek(struct file *file, loff_t offset, int orig)
                         ret = -EINVAL;
         }
 
-        up(&sisusb->lock);
+        mutex_unlock(&sisusb->lock);
         return ret;
 }
 
@@ -3136,7 +3137,7 @@ sisusb_ioctl(struct inode *inode, struct file *file, unsigned int cmd,
         if (!(sisusb = (struct sisusb_usb_data *)file->private_data))
                 return -ENODEV;
 
-        down(&sisusb->lock);
+        mutex_lock(&sisusb->lock);
 
         /* Sanity check */
         if (!sisusb->present || !sisusb->ready || !sisusb->sisusb_dev) {
@@ -3193,7 +3194,7 @@ sisusb_ioctl(struct inode *inode, struct file *file, unsigned int cmd,
         }
 
 err_out:
-        up(&sisusb->lock);
+        mutex_unlock(&sisusb->lock);
         return retval;
 }
 
@@ -3258,7 +3259,7 @@ static int sisusb_probe(struct usb_interface *intf,
         }
         kref_init(&sisusb->kref);
 
-        init_MUTEX(&(sisusb->lock));
+        mutex_init(&(sisusb->lock));
 
         /* Register device */
         if ((retval = usb_register_dev(intf, &usb_sisusb_class))) {
@@ -3429,9 +3430,9 @@ static void sisusb_disconnect(struct usb_interface *intf)
          * protect all other routines from the disconnect
          * case, not the other way round.
          */
-        down(&disconnect_sem);
+        mutex_lock(&disconnect_mutex);
 
-        down(&sisusb->lock);
+        mutex_lock(&sisusb->lock);
 
         /* Wait for all URBs to complete and kill them in case (MUST do) */
         if (!sisusb_wait_all_out_complete(sisusb))
@@ -3462,12 +3463,12 @@ static void sisusb_disconnect(struct usb_interface *intf)
         sisusb->present = 0;
         sisusb->ready = 0;
 
-        up(&sisusb->lock);
+        mutex_unlock(&sisusb->lock);
 
         /* decrement our usage count */
         kref_put(&sisusb->kref, sisusb_delete);
 
-        up(&disconnect_sem);
+        mutex_unlock(&disconnect_mutex);
 
         printk(KERN_INFO "sisusbvga[%d]: Disconnected\n", minor);
 }
diff --git a/drivers/usb/misc/sisusbvga/sisusb.h b/drivers/usb/misc/sisusbvga/sisusb.h
index a716825d1f9b..8e1120a64806 100644
--- a/drivers/usb/misc/sisusbvga/sisusb.h
+++ b/drivers/usb/misc/sisusbvga/sisusb.h
@@ -41,6 +41,8 @@
 #define SISUSB_NEW_CONFIG_COMPAT
 #endif
 
+#include <linux/mutex.h>
+
 /* For older kernels, support for text consoles is by default
  * off. To ensable text console support, change the following:
  */
@@ -60,11 +62,9 @@
 #define INCL_SISUSB_CON         1
 #endif
 
-#ifdef INCL_SISUSB_CON
 #include <linux/console.h>
 #include <linux/vt_kern.h>
 #include "sisusb_struct.h"
-#endif
 
 /* USB related */
 
@@ -116,7 +116,7 @@ struct sisusb_usb_data {
         struct usb_interface *interface;
         struct kref kref;
         wait_queue_head_t wait_q;       /* for syncind and timeouts */
-        struct semaphore lock;          /* general race avoidance */
+        struct mutex lock;              /* general race avoidance */
         unsigned int ifnum;             /* interface number of the USB device */
         int minor;                      /* minor (for logging clarity) */
         int isopen;                     /* !=0 if open */
diff --git a/drivers/usb/misc/sisusbvga/sisusb_con.c b/drivers/usb/misc/sisusbvga/sisusb_con.c
index be5c1a25ae21..092281c172a1 100644
--- a/drivers/usb/misc/sisusbvga/sisusb_con.c
+++ b/drivers/usb/misc/sisusbvga/sisusb_con.c
@@ -48,6 +48,7 @@
  */
 
 #include <linux/config.h>
+#include <linux/mutex.h>
 #include <linux/module.h>
 #include <linux/kernel.h>
 #include <linux/signal.h>
@@ -102,7 +103,7 @@ static struct sisusb_usb_data *mysisusbs[MAX_NR_CONSOLES];
 /* Forward declaration */
 static const struct consw sisusb_con;
 
-extern struct semaphore disconnect_sem;
+extern struct mutex disconnect_mutex;
 
 static inline void
 sisusbcon_memsetw(u16 *s, u16 c, unsigned int count)
@@ -194,11 +195,11 @@ sisusb_get_sisusb_lock_and_check(unsigned short console)
         if (!(sisusb = sisusb_get_sisusb(console)))
                 return NULL;
 
-        down(&sisusb->lock);
+        mutex_lock(&sisusb->lock);
 
         if (!sisusb_sisusb_valid(sisusb) ||
             !sisusb->havethisconsole[console]) {
-                up(&sisusb->lock);
+                mutex_unlock(&sisusb->lock);
                 return NULL;
         }
 
@@ -236,18 +237,18 @@ sisusbcon_init(struct vc_data *c, int init)
          * are set up/restored.
          */
 
-        down(&disconnect_sem);
+        mutex_lock(&disconnect_mutex);
 
         if (!(sisusb = sisusb_get_sisusb(c->vc_num))) {
-                up(&disconnect_sem);
+                mutex_unlock(&disconnect_mutex);
                 return;
         }
 
-        down(&sisusb->lock);
+        mutex_lock(&sisusb->lock);
 
         if (!sisusb_sisusb_valid(sisusb)) {
-                up(&sisusb->lock);
-                up(&disconnect_sem);
+                mutex_unlock(&sisusb->lock);
+                mutex_unlock(&disconnect_mutex);
                 return;
         }
 
@@ -284,9 +285,9 @@ sisusbcon_init(struct vc_data *c, int init)
         if (!*c->vc_uni_pagedir_loc)
                 con_set_default_unimap(c);
 
-        up(&sisusb->lock);
+        mutex_unlock(&sisusb->lock);
 
-        up(&disconnect_sem);
+        mutex_unlock(&disconnect_mutex);
 
         if (init) {
                 c->vc_cols = cols;
@@ -306,14 +307,14 @@ sisusbcon_deinit(struct vc_data *c)
          * and others, ie not under our control.
          */
 
-        down(&disconnect_sem);
+        mutex_lock(&disconnect_mutex);
 
         if (!(sisusb = sisusb_get_sisusb(c->vc_num))) {
-                up(&disconnect_sem);
+                mutex_unlock(&disconnect_mutex);
                 return;
         }
 
-        down(&sisusb->lock);
+        mutex_lock(&sisusb->lock);
 
         /* Clear ourselves in mysisusbs */
         mysisusbs[c->vc_num] = NULL;
@@ -332,12 +333,12 @@ sisusbcon_deinit(struct vc_data *c)
                 }
         }
 
-        up(&sisusb->lock);
+        mutex_unlock(&sisusb->lock);
 
         /* decrement the usage count on our sisusb */
         kref_put(&sisusb->kref, sisusb_delete);
 
-        up(&disconnect_sem);
+        mutex_unlock(&disconnect_mutex);
 }
 
 /* interface routine */
@@ -417,7 +418,7 @@ sisusbcon_putc(struct vc_data *c, int ch, int y, int x)
 #endif
 
         if (sisusb_is_inactive(c, sisusb)) {
-                up(&sisusb->lock);
+                mutex_unlock(&sisusb->lock);
                 return;
         }
 
@@ -425,7 +426,7 @@ sisusbcon_putc(struct vc_data *c, int ch, int y, int x)
         sisusb_copy_memory(sisusb, (char *)SISUSB_VADDR(x, y),
                                 (u32)SISUSB_HADDR(x, y), 2, &written);
 
-        up(&sisusb->lock);
+        mutex_unlock(&sisusb->lock);
 }
 
 /* Interface routine */
@@ -453,14 +454,14 @@ sisusbcon_putcs(struct vc_data *c, const unsigned short *s,
                 sisusbcon_writew(sisusbcon_readw(s++), dest++);
 
         if (sisusb_is_inactive(c, sisusb)) {
-                up(&sisusb->lock);
+                mutex_unlock(&sisusb->lock);
                 return;
         }
 
         sisusb_copy_memory(sisusb, (char *)SISUSB_VADDR(x, y),
                                 (u32)SISUSB_HADDR(x, y), count * 2, &written);
 
-        up(&sisusb->lock);
+        mutex_unlock(&sisusb->lock);
 }
 
 /* Interface routine */
@@ -504,7 +505,7 @@ sisusbcon_clear(struct vc_data *c, int y, int x, int height, int width)
         }
 
         if (sisusb_is_inactive(c, sisusb)) {
-                up(&sisusb->lock);
+                mutex_unlock(&sisusb->lock);
                 return;
         }
 
@@ -514,7 +515,7 @@ sisusbcon_clear(struct vc_data *c, int y, int x, int height, int width)
         sisusb_copy_memory(sisusb, (unsigned char *)SISUSB_VADDR(x, y),
                                 (u32)SISUSB_HADDR(x, y), length, &written);
 
-        up(&sisusb->lock);
+        mutex_unlock(&sisusb->lock);
 }
 
 /* Interface routine */
@@ -576,7 +577,7 @@ sisusbcon_bmove(struct vc_data *c, int sy, int sx,
 #endif
 
         if (sisusb_is_inactive(c, sisusb)) {
-                up(&sisusb->lock);
+                mutex_unlock(&sisusb->lock);
                 return;
         }
 
@@ -586,7 +587,7 @@ sisusbcon_bmove(struct vc_data *c, int sy, int sx,
         sisusb_copy_memory(sisusb, (unsigned char *)SISUSB_VADDR(dx, dy),
                                 (u32)SISUSB_HADDR(dx, dy), length, &written);
 
-        up(&sisusb->lock);
+        mutex_unlock(&sisusb->lock);
 }
 
 /* interface routine */
@@ -609,7 +610,7 @@ sisusbcon_switch(struct vc_data *c)
 
         /* Don't write to screen if in gfx mode */
         if (sisusb_is_inactive(c, sisusb)) {
-                up(&sisusb->lock);
+                mutex_unlock(&sisusb->lock);
                 return 0;
         }
 
@@ -618,7 +619,7 @@ sisusbcon_switch(struct vc_data *c)
          * as origin.
          */
         if (c->vc_origin == (unsigned long)c->vc_screenbuf) {
-                up(&sisusb->lock);
+                mutex_unlock(&sisusb->lock);
                 printk(KERN_DEBUG "sisusb: ASSERT ORIGIN != SCREENBUF!\n");
                 return 0;
         }
@@ -635,7 +636,7 @@ sisusbcon_switch(struct vc_data *c)
                                 (u32)SISUSB_HADDR(0, 0),
                                 length, &written);
 
-        up(&sisusb->lock);
+        mutex_unlock(&sisusb->lock);
 
         return 0;
 }
@@ -657,7 +658,7 @@ sisusbcon_save_screen(struct vc_data *c)
         /* sisusb->lock is down */
 
         if (sisusb_is_inactive(c, sisusb)) {
-                up(&sisusb->lock);
+                mutex_unlock(&sisusb->lock);
                 return;
         }
 
@@ -669,7 +670,7 @@ sisusbcon_save_screen(struct vc_data *c)
         sisusbcon_memcpyw((u16 *)c->vc_screenbuf, (u16 *)c->vc_origin,
                                                                 length);
 
-        up(&sisusb->lock);
+        mutex_unlock(&sisusb->lock);
 }
 
 /* interface routine */
@@ -690,7 +691,7 @@ sisusbcon_set_palette(struct vc_data *c, unsigned char *table)
         /* sisusb->lock is down */
 
         if (sisusb_is_inactive(c, sisusb)) {
-                up(&sisusb->lock);
+                mutex_unlock(&sisusb->lock);
                 return -EINVAL;
         }
 
@@ -705,7 +706,7 @@ sisusbcon_set_palette(struct vc_data *c, unsigned char *table)
                         break;
         }
 
-        up(&sisusb->lock);
+        mutex_unlock(&sisusb->lock);
 
         return 0;
 }
@@ -728,7 +729,7 @@ sisusbcon_blank(struct vc_data *c, int blank, int mode_switch)
                 sisusb->is_gfx = blank ? 1 : 0;
 
         if (sisusb_is_inactive(c, sisusb)) {
-                up(&sisusb->lock);
+                mutex_unlock(&sisusb->lock);
                 return 0;
         }
 
@@ -777,7 +778,7 @@ sisusbcon_blank(struct vc_data *c, int blank, int mode_switch)
                         cr63  = 0x40;
                         break;
                 default:
-                        up(&sisusb->lock);
+                        mutex_unlock(&sisusb->lock);
                         return -EINVAL;
                 }
 
@@ -788,7 +789,7 @@ sisusbcon_blank(struct vc_data *c, int blank, int mode_switch)
 
         }
 
-        up(&sisusb->lock);
+        mutex_unlock(&sisusb->lock);
 
         return ret;
 }
@@ -809,7 +810,7 @@ sisusbcon_scrolldelta(struct vc_data *c, int lines)
         /* sisusb->lock is down */
 
         if (sisusb_is_inactive(c, sisusb)) {
-                up(&sisusb->lock);
+                mutex_unlock(&sisusb->lock);
                 return 0;
         }
 
@@ -849,7 +850,7 @@ sisusbcon_scrolldelta(struct vc_data *c, int lines)
 
         sisusbcon_set_start_address(sisusb, c);
 
-        up(&sisusb->lock);
+        mutex_unlock(&sisusb->lock);
 
         return 1;
 }
@@ -867,7 +868,7 @@ sisusbcon_cursor(struct vc_data *c, int mode)
         /* sisusb->lock is down */
 
         if (sisusb_is_inactive(c, sisusb)) {
-                up(&sisusb->lock);
+                mutex_unlock(&sisusb->lock);
                 return;
         }
 
@@ -879,7 +880,7 @@ sisusbcon_cursor(struct vc_data *c, int mode)
         if (mode == CM_ERASE) {
                 sisusb_setidxregor(sisusb, SISCR, 0x0a, 0x20);
                 sisusb->sisusb_cursor_size_to = -1;
-                up(&sisusb->lock);
+                mutex_unlock(&sisusb->lock);
                 return;
         }
 
@@ -919,7 +920,7 @@ sisusbcon_cursor(struct vc_data *c, int mode)
                 sisusb->sisusb_cursor_size_to   = to;
         }
 
-        up(&sisusb->lock);
+        mutex_unlock(&sisusb->lock);
 }
 
 static int
@@ -961,7 +962,7 @@ sisusbcon_scroll_area(struct vc_data *c, struct sisusb_usb_data *sisusb,
         sisusb_copy_memory(sisusb, (char *)SISUSB_VADDR(0, t),
                                 (u32)SISUSB_HADDR(0, t), length, &written);
 
-        up(&sisusb->lock);
+        mutex_unlock(&sisusb->lock);
 
         return 1;
 }
@@ -994,7 +995,7 @@ sisusbcon_scroll(struct vc_data *c, int t, int b, int dir, int lines)
         /* sisusb->lock is down */
 
         if (sisusb_is_inactive(c, sisusb)) {
-                up(&sisusb->lock);
+                mutex_unlock(&sisusb->lock);
                 return 0;
         }
 
@@ -1084,7 +1085,7 @@ sisusbcon_scroll(struct vc_data *c, int t, int b, int dir, int lines)
 
         c->vc_pos = c->vc_pos - oldorigin + c->vc_origin;
 
-        up(&sisusb->lock);
+        mutex_unlock(&sisusb->lock);
 
         return 1;
 }
@@ -1106,7 +1107,7 @@ sisusbcon_set_origin(struct vc_data *c)
         /* sisusb->lock is down */
 
         if (sisusb_is_inactive(c, sisusb) || sisusb->con_blanked) {
-                up(&sisusb->lock);
+                mutex_unlock(&sisusb->lock);
                 return 0;
         }
 
@@ -1116,7 +1117,7 @@ sisusbcon_set_origin(struct vc_data *c)
 
         sisusb->con_rolled_over = 0;
 
-        up(&sisusb->lock);
+        mutex_unlock(&sisusb->lock);
 
         return 1;
 }
@@ -1133,7 +1134,7 @@ sisusbcon_resize(struct vc_data *c, unsigned int newcols, unsigned int newrows)
 
         fh = sisusb->current_font_height;
 
-        up(&sisusb->lock);
+        mutex_unlock(&sisusb->lock);
 
         /* We are quite unflexible as regards resizing. The vt code
          * handles sizes where the line length isn't equal the pitch
@@ -1167,7 +1168,7 @@ sisusbcon_do_font_op(struct sisusb_usb_data *sisusb, int set, int slot,
 
         if ((slot != 0 && slot != 2) || !fh) {
                 if (uplock)
-                        up(&sisusb->lock);
+                        mutex_unlock(&sisusb->lock);
                 return -EINVAL;
         }
 
@@ -1327,7 +1328,7 @@ sisusbcon_do_font_op(struct sisusb_usb_data *sisusb, int set, int slot,
         }
 
         if (uplock)
-                up(&sisusb->lock);
+                mutex_unlock(&sisusb->lock);
 
         if (dorecalc && c) {
                 int i, rows = c->vc_scan_lines / fh;
@@ -1351,7 +1352,7 @@ sisusbcon_do_font_op(struct sisusb_usb_data *sisusb, int set, int slot,
 
 font_op_error:
         if (uplock)
-                up(&sisusb->lock);
+                mutex_unlock(&sisusb->lock);
 
         return -EIO;
 }
@@ -1417,19 +1418,19 @@ sisusbcon_font_get(struct vc_data *c, struct console_font *font)
         font->charcount = 256;
 
         if (!font->data) {
-                up(&sisusb->lock);
+                mutex_unlock(&sisusb->lock);
                 return 0;
         }
 
         if (!sisusb->font_backup) {
-                up(&sisusb->lock);
+                mutex_unlock(&sisusb->lock);
                 return -ENODEV;
         }
 
         /* Copy 256 chars only, like vgacon */
         memcpy(font->data, sisusb->font_backup, 256 * 32);
 
-        up(&sisusb->lock);
+        mutex_unlock(&sisusb->lock);
 
         return 0;
 }
@@ -1512,14 +1513,14 @@ sisusb_console_init(struct sisusb_usb_data *sisusb, int first, int last)
 {
         int i, ret, minor = sisusb->minor;
 
-        down(&disconnect_sem);
+        mutex_lock(&disconnect_mutex);
 
-        down(&sisusb->lock);
+        mutex_lock(&sisusb->lock);
 
         /* Erm.. that should not happen */
         if (sisusb->haveconsole || !sisusb->SiS_Pr) {
-                up(&sisusb->lock);
-                up(&disconnect_sem);
+                mutex_unlock(&sisusb->lock);
+                mutex_unlock(&disconnect_mutex);
                 return 1;
         }
 
@@ -1529,15 +1530,15 @@ sisusb_console_init(struct sisusb_usb_data *sisusb, int first, int last)
         if (first > last ||
             first > MAX_NR_CONSOLES ||
             last > MAX_NR_CONSOLES) {
-                up(&sisusb->lock);
-                up(&disconnect_sem);
+                mutex_unlock(&sisusb->lock);
+                mutex_unlock(&disconnect_mutex);
                 return 1;
         }
 
         /* If gfxcore not initialized or no consoles given, quit graciously */
         if (!sisusb->gfxinit || first < 1 || last < 1) {
-                up(&sisusb->lock);
-                up(&disconnect_sem);
+                mutex_unlock(&sisusb->lock);
+                mutex_unlock(&disconnect_mutex);
                 return 0;
         }
 
@@ -1547,8 +1548,8 @@ sisusb_console_init(struct sisusb_usb_data *sisusb, int first, int last)
 
         /* Set up text mode (and upload  default font) */
         if (sisusb_reset_text_mode(sisusb, 1)) {
-                up(&sisusb->lock);
-                up(&disconnect_sem);
+                mutex_unlock(&sisusb->lock);
+                mutex_unlock(&disconnect_mutex);
                 printk(KERN_ERR
                         "sisusbvga[%d]: Failed to set up text mode\n",
                         minor);
@@ -1571,16 +1572,16 @@ sisusb_console_init(struct sisusb_usb_data *sisusb, int first, int last)
 
         /* Allocate screen buffer */
         if (!(sisusb->scrbuf = (unsigned long)vmalloc(sisusb->scrbuf_size))) {
-                up(&sisusb->lock);
-                up(&disconnect_sem);
+                mutex_unlock(&sisusb->lock);
+                mutex_unlock(&disconnect_mutex);
                 printk(KERN_ERR
                         "sisusbvga[%d]: Failed to allocate screen buffer\n",
                         minor);
                 return 1;
         }
 
-        up(&sisusb->lock);
-        up(&disconnect_sem);
+        mutex_unlock(&sisusb->lock);
+        mutex_unlock(&disconnect_mutex);
 
         /* Now grab the desired console(s) */
         ret = take_over_console(&sisusb_con, first - 1, last - 1, 0);