[PARISC] more sparse fixes

0/NULL changes, __user annotations, __iomem annotations

Signed-off-by: Matthew Wilcox <[e-mail]>
Signed-off-by: Kyle McMartin <[e-mail]>

arch/parisc/hpux/fs.c

···
 	int error;
 	char *filename;
 
-	filename = getname((char *) regs->gr[26]);
+	filename = getname((char __user *) regs->gr[26]);
 	error = PTR_ERR(filename);
 	if (IS_ERR(filename))
 		goto out;
 
-	error = do_execve(filename, (char **) regs->gr[25],
-		(char **)regs->gr[24], regs);
+	error = do_execve(filename, (char __user * __user *) regs->gr[25],
+		(char __user * __user *) regs->gr[24], regs);
 
 	if (error == 0) {
 		task_lock(current);
···
 };
 
 struct getdents_callback {
-	struct hpux_dirent *current_dir;
-	struct hpux_dirent *previous;
+	struct hpux_dirent __user *current_dir;
+	struct hpux_dirent __user *previous;
 	int count;
 	int error;
 };
 
-#define NAME_OFFSET(de) ((int) ((de)->d_name - (char *) (de)))
+#define NAME_OFFSET(de) ((int) ((de)->d_name - (char __user *) (de)))
 #define ROUND_UP(x) (((x)+sizeof(long)-1) & ~(sizeof(long)-1))
 
 static int filldir(void * __buf, const char * name, int namlen, loff_t offset,
 		u64 ino, unsigned d_type)
 {
-	struct hpux_dirent * dirent;
+	struct hpux_dirent __user * dirent;
 	struct getdents_callback * buf = (struct getdents_callback *) __buf;
 	ino_t d_ino;
 	int reclen = ROUND_UP(NAME_OFFSET(dirent) + namlen + 1);
···
 #undef NAME_OFFSET
 #undef ROUND_UP
 
-int hpux_getdents(unsigned int fd, struct hpux_dirent *dirent, unsigned int count)
+int hpux_getdents(unsigned int fd, struct hpux_dirent __user *dirent, unsigned int count)
 {
 	struct file * file;
-	struct hpux_dirent * lastdirent;
+	struct hpux_dirent __user * lastdirent;
 	struct getdents_callback buf;
 	int error = -EBADF;
 
···
 	return -ENOSYS;
 }
 
-static int cp_hpux_stat(struct kstat *stat, struct hpux_stat64 *statbuf)
+static int cp_hpux_stat(struct kstat *stat, struct hpux_stat64 __user *statbuf)
 {
 	struct hpux_stat64 tmp;
 
···
 	return copy_to_user(statbuf,&tmp,sizeof(tmp)) ? -EFAULT : 0;
 }
 
-long hpux_stat64(char *filename, struct hpux_stat64 *statbuf)
+long hpux_stat64(char __user *filename, struct hpux_stat64 __user *statbuf)
 {
 	struct kstat stat;
 	int error = vfs_stat(filename, &stat);
···
 	return error;
 }
 
-long hpux_fstat64(unsigned int fd, struct hpux_stat64 *statbuf)
+long hpux_fstat64(unsigned int fd, struct hpux_stat64 __user *statbuf)
 {
 	struct kstat stat;
 	int error = vfs_fstat(fd, &stat);
···
 	return error;
 }
 
-long hpux_lstat64(char *filename, struct hpux_stat64 *statbuf)
+long hpux_lstat64(char __user *filename, struct hpux_stat64 __user *statbuf)
 {
 	struct kstat stat;
 	int error = vfs_lstat(filename, &stat);

arch/parisc/hpux/sys_hpux.c

···
 	return -ENOSYS;
 }
 
-int hpux_wait(int *stat_loc)
+int hpux_wait(int __user *stat_loc)
 {
 	return sys_waitpid(-1, stat_loc, 0);
 }
···
 /*  TODO: Are these put_user calls OK?  Should they pass an int?
  *        (I copied it from sys_i386.c like this.)
  */
-static int hpux_uname(struct hpux_utsname *name)
+static int hpux_uname(struct hpux_utsname __user *name)
 {
 	int error;
 
···
 /*  Note: HP-UX just uses the old suser() function to check perms
  *  in this system call.  We'll use capable(CAP_SYS_ADMIN).
  */
-int hpux_utssys(char *ubuf, int n, int type)
+int hpux_utssys(char __user *ubuf, int n, int type)
 {
 	int len;
 	int error;
 	switch( type ) {
 	case 0:
 		/*  uname():  */
-		return( hpux_uname( (struct hpux_utsname *)ubuf ) );
+		return hpux_uname((struct hpux_utsname __user *)ubuf);
 		break ;
 	case 1:
 		/*  Obsolete (used to be umask().)  */
···
 		break ;
 	case 2:
 		/*  ustat():  */
-		return( hpux_ustat(new_decode_dev(n), (struct hpux_ustat *)ubuf) );
-		break ;
+		return hpux_ustat(new_decode_dev(n),
+				  (struct hpux_ustat __user *)ubuf);
+		break;
 	case 3:
 		/*  setuname():
 		 *
···
 			return -EINVAL ;
 		/*  Unlike Linux, HP-UX truncates it if n is too big:  */
 		len = (n <= __NEW_UTS_LEN) ? n : __NEW_UTS_LEN ;
-		return( sys_sethostname(ubuf, len) );
+		return sys_sethostname(ubuf, len);
 		break ;
 	case 4:
 		/*  sethostname():
···
 			return -EINVAL ;
 		/*  Unlike Linux, HP-UX truncates it if n is too big:  */
 		len = (n <= __NEW_UTS_LEN) ? n : __NEW_UTS_LEN ;
-		return( sys_sethostname(ubuf, len) );
+		return sys_sethostname(ubuf, len);
 		break ;
 	case 5:
 		/*  gethostname():
···
 		/*  Unlike Linux, HP-UX returns an error if n==0:  */
 		if ( n <= 0 )
 			return -EINVAL ;
-		return( sys_gethostname(ubuf, n) );
+		return sys_gethostname(ubuf, n);
 		break ;
 	case 6:
 		/*  Supposedly called from setuname() in libc.
···
 	}
 }
 
-int hpux_getdomainname(char *name, int len)
+int hpux_getdomainname(char __user *name, int len)
 {
  	int nlen;
  	int err = -EFAULT;
···
 	printk(KERN_DEBUG "hpux_sysfs called with arg1='%lx'\n", arg1);
 
 	if ( opcode == 1 ) { /* GETFSIND */	
-		len = strlen_user((char *)arg1);
+		char __user *user_fsname = (char __user *)arg1;
+		len = strlen_user(user_fsname);
 		printk(KERN_DEBUG "len of arg1 = %d\n", len);
 		if (len == 0)
 			return 0;
-		fsname = (char *) kmalloc(len, GFP_KERNEL);
-		if ( !fsname ) {
+		fsname = kmalloc(len, GFP_KERNEL);
+		if (!fsname) {
 			printk(KERN_DEBUG "failed to kmalloc fsname\n");
 			return 0;
 		}
 
-		if ( copy_from_user(fsname, (char *)arg1, len) ) {
+		if (copy_from_user(fsname, user_fsname, len)) {
 			printk(KERN_DEBUG "failed to copy_from_user fsname\n");
 			kfree(fsname);
 			return 0;
···
 			fstype = 0;
 		} else {
 			fstype = 0;
-		};
+		}
 
 		kfree(fsname);
 

arch/parisc/kernel/pci-dma.c

···
 	pcxl_res_map = (char *)__get_free_pages(GFP_KERNEL,
 					    get_order(pcxl_res_size));
 	memset(pcxl_res_map, 0, pcxl_res_size);
-	proc_gsc_root = proc_mkdir("gsc", 0);
+	proc_gsc_root = proc_mkdir("gsc", NULL);
 	if (!proc_gsc_root)
     		printk(KERN_WARNING
 			"pcxl_dma_init: Unable to create gsc /proc dir entry\n");

arch/parisc/mm/ioremap.c

···
  */
 void __iomem * __ioremap(unsigned long phys_addr, unsigned long size, unsigned long flags)
 {
-	void *addr;
+	void __iomem *addr;
 	struct vm_struct *area;
 	unsigned long offset, last_addr;
 
···
 	if (!area)
 		return NULL;
 
-	addr = area->addr;
+	addr = (void __iomem *) area->addr;
 	if (remap_area_pages((unsigned long) addr, phys_addr, size, flags)) {
 		vfree(addr);
 		return NULL;
 	}
 
-	return (void __iomem *) (offset + (char *)addr);
+	return (void __iomem *) (offset + (char __iomem *)addr);
 }
 EXPORT_SYMBOL(__ioremap);