4 files changed, 11 insertions, 72 deletions

diff --git a/arch/mips/kernel/branch.c b/arch/mips/kernel/branch.c
index 374de83..b6232d9 100644
--- a/arch/mips/kernel/branch.c
+++ b/arch/mips/kernel/branch.c
@@ -184,7 +184,7 @@ int __compute_return_epc(struct pt_regs *regs)
 		bit = (insn.i_format.rt >> 2);
 		bit += (bit != 0);
 		bit += 23;
-		switch (insn.i_format.rt) {
+		switch (insn.i_format.rt & 3) {
 		case 0:	/* bc1f */
 		case 2:	/* bc1fl */
 			if (~fcr31 & (1 << bit))
diff --git a/arch/mips/kernel/linux32.c b/arch/mips/kernel/linux32.c
index 7c953bc..a7d2bb3 100644
--- a/arch/mips/kernel/linux32.c
+++ b/arch/mips/kernel/linux32.c
@@ -356,73 +356,13 @@ asmlinkage int sys32_llseek(unsigned int fd, unsigned int offset_high,
 asmlinkage ssize_t sys32_pread(unsigned int fd, char __user * buf,
 			       size_t count, u32 unused, u64 a4, u64 a5)
 {
-	ssize_t ret;
-	struct file * file;
-	ssize_t (*read)(struct file *, char __user *, size_t, loff_t *);
-	loff_t pos;
-
-	ret = -EBADF;
-	file = fget(fd);
-	if (!file)
-		goto bad_file;
-	if (!(file->f_mode & FMODE_READ))
-		goto out;
-	pos = merge_64(a4, a5);
-	ret = rw_verify_area(READ, file, &pos, count);
-	if (ret < 0)
-		goto out;
-	ret = -EINVAL;
-	if (!file->f_op || !(read = file->f_op->read))
-		goto out;
-	if (pos < 0)
-		goto out;
-	ret = -ESPIPE;
-	if (!(file->f_mode & FMODE_PREAD))
-		goto out;
-	ret = read(file, buf, count, &pos);
-	if (ret > 0)
-		dnotify_parent(file->f_dentry, DN_ACCESS);
-out:
-	fput(file);
-bad_file:
-	return ret;
+	return sys_pread64(fd, buf, count, merge_64(a4, a5));
 }
 
 asmlinkage ssize_t sys32_pwrite(unsigned int fd, const char __user * buf,
 			        size_t count, u32 unused, u64 a4, u64 a5)
 {
-	ssize_t ret;
-	struct file * file;
-	ssize_t (*write)(struct file *, const char __user *, size_t, loff_t *);
-	loff_t pos;
-
-	ret = -EBADF;
-	file = fget(fd);
-	if (!file)
-		goto bad_file;
-	if (!(file->f_mode & FMODE_WRITE))
-		goto out;
-	pos = merge_64(a4, a5);
-	ret = rw_verify_area(WRITE, file, &pos, count);
-	if (ret < 0)
-		goto out;
-	ret = -EINVAL;
-	if (!file->f_op || !(write = file->f_op->write))
-		goto out;
-	if (pos < 0)
-		goto out;
-
-	ret = -ESPIPE;
-	if (!(file->f_mode & FMODE_PWRITE))
-		goto out;
-
-	ret = write(file, buf, count, &pos);
-	if (ret > 0)
-		dnotify_parent(file->f_dentry, DN_MODIFY);
-out:
-	fput(file);
-bad_file:
-	return ret;
+	return sys_pwrite64(fd, buf, count, merge_64(a4, a5));
 }
 
 asmlinkage int sys32_sched_rr_get_interval(compat_pid_t pid,
diff --git a/arch/mips/kernel/rtlx.c b/arch/mips/kernel/rtlx.c
index 6179805..caf777f 100644
--- a/arch/mips/kernel/rtlx.c
+++ b/arch/mips/kernel/rtlx.c
@@ -398,15 +398,14 @@ ssize_t rtlx_write(int index, void *buffer, size_t count, int user)
 
 static int file_open(struct inode *inode, struct file *filp)
 {
-	int minor = MINOR(inode->i_rdev);
+	int minor = iminor(inode);
 
 	return rtlx_open(minor, (filp->f_flags & O_NONBLOCK) ? 0 : 1);
 }
 
 static int file_release(struct inode *inode, struct file *filp)
 {
-	int minor;
-	minor = MINOR(inode->i_rdev);
+	int minor = iminor(inode);
 
 	return rtlx_release(minor);
 }
@@ -416,7 +415,7 @@ static unsigned int file_poll(struct file *file, poll_table * wait)
 	int minor;
 	unsigned int mask = 0;
 
-	minor = MINOR(file->f_dentry->d_inode->i_rdev);
+	minor = iminor(file->f_dentry->d_inode);
 
 	poll_wait(file, &channel_wqs[minor].rt_queue, wait);
 	poll_wait(file, &channel_wqs[minor].lx_queue, wait);
@@ -438,7 +437,7 @@ static unsigned int file_poll(struct file *file, poll_table * wait)
 static ssize_t file_read(struct file *file, char __user * buffer, size_t count,
 			 loff_t * ppos)
 {
-	int minor = MINOR(file->f_dentry->d_inode->i_rdev);
+	int minor = iminor(file->f_dentry->d_inode);
 
 	/* data available? */
 	if (!rtlx_read_poll(minor, (file->f_flags & O_NONBLOCK) ? 0 : 1)) {
@@ -455,7 +454,7 @@ static ssize_t file_write(struct file *file, const char __user * buffer,
 	struct rtlx_channel *rt;
 	DECLARE_WAITQUEUE(wait, current);
 
-	minor = MINOR(file->f_dentry->d_inode->i_rdev);
+	minor = iminor(file->f_dentry->d_inode);
 	rt = &rtlx->channel[minor];
 
 	/* any space left... */
diff --git a/arch/mips/kernel/vpe.c b/arch/mips/kernel/vpe.c
index 80ffaa6..85d7df7 100644
--- a/arch/mips/kernel/vpe.c
+++ b/arch/mips/kernel/vpe.c
@@ -1072,7 +1072,7 @@ static int vpe_open(struct inode *inode, struct file *filp)
 	struct vpe_notifications *not;
 
 	/* assume only 1 device at the mo. */
-	if ((minor = MINOR(inode->i_rdev)) != 1) {
+	if ((minor = iminor(inode)) != 1) {
 		printk(KERN_WARNING "VPE loader: only vpe1 is supported\n");
 		return -ENODEV;
 	}
@@ -1133,7 +1133,7 @@ static int vpe_release(struct inode *inode, struct file *filp)
 	struct vpe *v;
 	Elf_Ehdr *hdr;
 
-	minor = MINOR(inode->i_rdev);
+	minor = iminor(inode);
 	if ((v = get_vpe(minor)) == NULL)
 		return -ENODEV;
 
@@ -1174,7 +1174,7 @@ static ssize_t vpe_write(struct file *file, const char __user * buffer,
 	size_t ret = count;
 	struct vpe *v;
 
-	minor = MINOR(file->f_dentry->d_inode->i_rdev);
+	minor = iminor(file->f_dentry->d_inode);
 	if ((v = get_vpe(minor)) == NULL)
 		return -ENODEV;