Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6

12 files changed, 50 insertions, 32 deletions

diff --git a/arch/um/drivers/chan_kern.c b/arch/um/drivers/chan_kern.c
index 6e51424745ab..25e1965df7ce 100644
--- a/arch/um/drivers/chan_kern.c
+++ b/arch/um/drivers/chan_kern.c
@@ -210,9 +210,9 @@ void free_irqs(void)
         list_for_each(ele, &list) {
                 chan = list_entry(ele, struct chan, free_list);
 
-                if (chan->input)
+                if (chan->input && chan->enabled)
                         free_irq(chan->line->driver->read_irq, chan);
-                if (chan->output)
+                if (chan->output && chan->enabled)
                         free_irq(chan->line->driver->write_irq, chan);
                 chan->enabled = 0;
         }
@@ -231,9 +231,9 @@ static void close_one_chan(struct chan *chan, int delay_free_irq)
                 spin_unlock_irqrestore(&irqs_to_free_lock, flags);
         }
         else {
-                if (chan->input)
+                if (chan->input && chan->enabled)
                         free_irq(chan->line->driver->read_irq, chan);
-                if (chan->output)
+                if (chan->output && chan->enabled)
                         free_irq(chan->line->driver->write_irq, chan);
                 chan->enabled = 0;
         }
diff --git a/arch/um/drivers/hostaudio_kern.c b/arch/um/drivers/hostaudio_kern.c
index 68142df76608..0c46e398cd8f 100644
--- a/arch/um/drivers/hostaudio_kern.c
+++ b/arch/um/drivers/hostaudio_kern.c
@@ -187,7 +187,9 @@ static int hostaudio_open(struct inode *inode, struct file *file)
         int ret;
 
 #ifdef DEBUG
+        kparam_block_sysfs_write(dsp);
         printk(KERN_DEBUG "hostaudio: open called (host: %s)\n", dsp);
+        kparam_unblock_sysfs_write(dsp);
 #endif
 
         state = kmalloc(sizeof(struct hostaudio_state), GFP_KERNEL);
@@ -199,9 +201,11 @@ static int hostaudio_open(struct inode *inode, struct file *file)
         if (file->f_mode & FMODE_WRITE)
                 w = 1;
 
+        kparam_block_sysfs_write(dsp);
         lock_kernel();
         ret = os_open_file(dsp, of_set_rw(OPENFLAGS(), r, w), 0);
         unlock_kernel();
+        kparam_unblock_sysfs_write(dsp);
 
         if (ret < 0) {
                 kfree(state);
@@ -258,13 +262,17 @@ static int hostmixer_open_mixdev(struct inode *inode, struct file *file)
         if (file->f_mode & FMODE_WRITE)
                 w = 1;
 
+        kparam_block_sysfs_write(mixer);
         lock_kernel();
         ret = os_open_file(mixer, of_set_rw(OPENFLAGS(), r, w), 0);
         unlock_kernel();
+        kparam_unblock_sysfs_write(mixer);
 
         if (ret < 0) {
+                kparam_block_sysfs_write(dsp);
                 printk(KERN_ERR "hostaudio_open_mixdev failed to open '%s', "
                        "err = %d\n", dsp, -ret);
+                kparam_unblock_sysfs_write(dsp);
                 kfree(state);
                 return ret;
         }
@@ -320,8 +328,10 @@ MODULE_LICENSE("GPL");
 
 static int __init hostaudio_init_module(void)
 {
+        __kernel_param_lock();
         printk(KERN_INFO "UML Audio Relay (host dsp = %s, host mixer = %s)\n",
                dsp, mixer);
+        __kernel_param_unlock();
 
         module_data.dev_audio = register_sound_dsp(&hostaudio_fops, -1);
         if (module_data.dev_audio < 0) {
diff --git a/arch/um/drivers/ubd_kern.c b/arch/um/drivers/ubd_kern.c
index da992a3ad6b7..1bcd208c459f 100644
--- a/arch/um/drivers/ubd_kern.c
+++ b/arch/um/drivers/ubd_kern.c
@@ -33,6 +33,7 @@
 #include "linux/mm.h"
 #include "linux/slab.h"
 #include "linux/vmalloc.h"
+#include "linux/smp_lock.h"
 #include "linux/blkpg.h"
 #include "linux/genhd.h"
 #include "linux/spinlock.h"
@@ -1098,6 +1099,7 @@ static int ubd_open(struct block_device *bdev, fmode_t mode)
         struct ubd *ubd_dev = disk->private_data;
         int err = 0;
 
+        lock_kernel();
         if(ubd_dev->count == 0){
                 err = ubd_open_dev(ubd_dev);
                 if(err){
@@ -1115,7 +1117,8 @@ static int ubd_open(struct block_device *bdev, fmode_t mode)
                 if(--ubd_dev->count == 0) ubd_close_dev(ubd_dev);
                 err = -EROFS;
         }*/
- out:
+out:
+        unlock_kernel();
         return err;
 }
 
@@ -1123,8 +1126,10 @@ static int ubd_release(struct gendisk *disk, fmode_t mode)
 {
         struct ubd *ubd_dev = disk->private_data;
 
+        lock_kernel();
         if(--ubd_dev->count == 0)
                 ubd_close_dev(ubd_dev);
+        unlock_kernel();
         return 0;
 }
 
diff --git a/arch/um/include/asm/dma-mapping.h b/arch/um/include/asm/dma-mapping.h
index b948c14a7867..17a2cb5a4178 100644
--- a/arch/um/include/asm/dma-mapping.h
+++ b/arch/um/include/asm/dma-mapping.h
@@ -94,7 +94,6 @@ dma_sync_sg_for_cpu(struct device *dev, struct scatterlist *sg, int nelems,
 
 #define dma_alloc_noncoherent(d, s, h, f) dma_alloc_coherent(d, s, h, f)
 #define dma_free_noncoherent(d, s, v, h) dma_free_coherent(d, s, v, h)
-#define dma_is_consistent(d, h) (1)
 
 static inline int
 dma_get_cache_alignment(void)
diff --git a/arch/um/include/shared/os.h b/arch/um/include/shared/os.h
index cd40fddcf99d..c4617baaa4f2 100644
--- a/arch/um/include/shared/os.h
+++ b/arch/um/include/shared/os.h
@@ -161,6 +161,9 @@ extern int os_stat_filesystem(char *path, long *bsize_out,
                               long *spare_out);
 extern int os_change_dir(char *dir);
 extern int os_fchange_dir(int fd);
+extern unsigned os_major(unsigned long long dev);
+extern unsigned os_minor(unsigned long long dev);
+extern unsigned long long os_makedev(unsigned major, unsigned minor);
 
 /* start_up.c */
 extern void os_early_checks(void);
diff --git a/arch/um/kernel/exec.c b/arch/um/kernel/exec.c
index 97974c1bdd12..59b20d93b6d4 100644
--- a/arch/um/kernel/exec.c
+++ b/arch/um/kernel/exec.c
@@ -44,7 +44,7 @@ void start_thread(struct pt_regs *regs, unsigned long eip, unsigned long esp)
         PT_REGS_SP(regs) = esp;
 }
 
-static long execve1(char *file, char __user * __user *argv,
+static long execve1(const char *file, char __user * __user *argv,
                     char __user *__user *env)
 {
         long error;
@@ -61,7 +61,7 @@ static long execve1(char *file, char __user * __user *argv,
         return error;
 }
 
-long um_execve(char *file, char __user *__user *argv, char __user *__user *env)
+long um_execve(const char *file, char __user *__user *argv, char __user *__user *env)
 {
         long err;
 
@@ -71,7 +71,7 @@ long um_execve(char *file, char __user *__user *argv, char __user *__user *env)
         return err;
 }
 
-long sys_execve(char __user *file, char __user *__user *argv,
+long sys_execve(const char __user *file, char __user *__user *argv,
                 char __user *__user *env)
 {
         long error;
diff --git a/arch/um/kernel/internal.h b/arch/um/kernel/internal.h
index 3bda43c7a786..1303a105fe91 100644
--- a/arch/um/kernel/internal.h
+++ b/arch/um/kernel/internal.h
@@ -1 +1 @@
-extern long um_execve(char *file, char __user *__user *argv, char __user *__user *env);
+extern long um_execve(const char *file, char __user *__user *argv, char __user *__user *env);
diff --git a/arch/um/kernel/ksyms.c b/arch/um/kernel/ksyms.c
index 836fc9b94707..0ae0dfcfbffb 100644
--- a/arch/um/kernel/ksyms.c
+++ b/arch/um/kernel/ksyms.c
@@ -58,6 +58,9 @@ EXPORT_SYMBOL(os_accept_connection);
 EXPORT_SYMBOL(os_rcv_fd);
 EXPORT_SYMBOL(run_helper);
 EXPORT_SYMBOL(start_thread);
+EXPORT_SYMBOL(os_major);
+EXPORT_SYMBOL(os_minor);
+EXPORT_SYMBOL(os_makedev);
 
 EXPORT_SYMBOL(add_sigio_fd);
 EXPORT_SYMBOL(ignore_sigio_fd);
diff --git a/arch/um/kernel/ptrace.c b/arch/um/kernel/ptrace.c
index 484509948ee9..e0510496596c 100644
--- a/arch/um/kernel/ptrace.c
+++ b/arch/um/kernel/ptrace.c
@@ -7,9 +7,6 @@
 #include "linux/ptrace.h"
 #include "linux/sched.h"
 #include "asm/uaccess.h"
-#ifdef CONFIG_PROC_MM
-#include "proc_mm.h"
-#endif
 #include "skas_ptrace.h"
 
 
@@ -158,24 +155,6 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
                 break;
         }
 #endif
-#ifdef CONFIG_PROC_MM
-        case PTRACE_SWITCH_MM: {
-                struct mm_struct *old = child->mm;
-                struct mm_struct *new = proc_mm_get_mm(data);
-
-                if (IS_ERR(new)) {
-                        ret = PTR_ERR(new);
-                        break;
-                }
-
-                atomic_inc(&new->mm_users);
-                child->mm = new;
-                child->active_mm = new;
-                mmput(old);
-                ret = 0;
-                break;
-        }
-#endif
 #ifdef PTRACE_ARCH_PRCTL
         case PTRACE_ARCH_PRCTL:
                 /* XXX Calls ptrace on the host - needs some SMP thinking */
diff --git a/arch/um/kernel/syscall.c b/arch/um/kernel/syscall.c
index 4393173923f5..7427c0b1930c 100644
--- a/arch/um/kernel/syscall.c
+++ b/arch/um/kernel/syscall.c
@@ -58,7 +58,7 @@ int kernel_execve(const char *filename, char *const argv[], char *const envp[])
 
         fs = get_fs();
         set_fs(KERNEL_DS);
-        ret = um_execve((char *)filename, (char __user *__user *)argv,
+        ret = um_execve(filename, (char __user *__user *)argv,
                         (char __user *__user *) envp);
         set_fs(fs);
 
diff --git a/arch/um/os-Linux/file.c b/arch/um/os-Linux/file.c
index b5afcfd0f861..140e587bc0ad 100644
--- a/arch/um/os-Linux/file.c
+++ b/arch/um/os-Linux/file.c
@@ -561,3 +561,18 @@ int os_lock_file(int fd, int excl)
  out:
         return err;
 }
+
+unsigned os_major(unsigned long long dev)
+{
+        return major(dev);
+}
+
+unsigned os_minor(unsigned long long dev)
+{
+        return minor(dev);
+}
+
+unsigned long long os_makedev(unsigned major, unsigned minor)
+{
+        return makedev(major, minor);
+}
diff --git a/arch/um/os-Linux/user_syms.c b/arch/um/os-Linux/user_syms.c
index 89b48a116a89..05f5ea8e83d2 100644
--- a/arch/um/os-Linux/user_syms.c
+++ b/arch/um/os-Linux/user_syms.c
@@ -103,6 +103,10 @@ EXPORT_SYMBOL_PROTO(getuid);
 EXPORT_SYMBOL_PROTO(fsync);
 EXPORT_SYMBOL_PROTO(fdatasync);
 
+EXPORT_SYMBOL_PROTO(lstat64);
+EXPORT_SYMBOL_PROTO(fstat64);
+EXPORT_SYMBOL_PROTO(mknod);
+
 /* Export symbols used by GCC for the stack protector. */
 extern void __stack_smash_handler(void *) __attribute__((weak));
 EXPORT_SYMBOL(__stack_smash_handler);