fix ioctl _IOR, _IOW, etc macros to avoid signed overflow (2<<30)

arch/arm/bits/ioctl.h

@@ -4,9 +4,9 @@
 #define _IOC_READ  2U
 
 #define _IO(a,b) _IOC(_IOC_NONE,(a),(b),0)
-#define _IOW(a,b,c) _IOC(1,(a),(b),sizeof(c))
-#define _IOR(a,b,c) _IOC(2,(a),(b),sizeof(c))
-#define _IOWR(a,b,c) _IOC(3,(a),(b),sizeof(c))
+#define _IOW(a,b,c) _IOC(_IOC_WRITE,(a),(b),sizeof(c))
+#define _IOR(a,b,c) _IOC(_IOC_READ,(a),(b),sizeof(c))
+#define _IOWR(a,b,c) _IOC(_IOC_READ|_IOC_WRITE,(a),(b),sizeof(c))
 
 #define TCGETS		0x5401
 #define TCSETS		0x5402

arch/i386/bits/ioctl.h

@@ -4,9 +4,9 @@
 #define _IOC_READ  2U
 
 #define _IO(a,b) _IOC(_IOC_NONE,(a),(b),0)
-#define _IOW(a,b,c) _IOC(1,(a),(b),sizeof(c))
-#define _IOR(a,b,c) _IOC(2,(a),(b),sizeof(c))
-#define _IOWR(a,b,c) _IOC(3,(a),(b),sizeof(c))
+#define _IOW(a,b,c) _IOC(_IOC_WRITE,(a),(b),sizeof(c))
+#define _IOR(a,b,c) _IOC(_IOC_READ,(a),(b),sizeof(c))
+#define _IOWR(a,b,c) _IOC(_IOC_READ|_IOC_WRITE,(a),(b),sizeof(c))
 
 #define TCGETS		0x5401
 #define TCSETS		0x5402

arch/microblaze/bits/ioctl.h

@@ -4,9 +4,9 @@
 #define _IOC_READ  2U
 
 #define _IO(a,b) _IOC(_IOC_NONE,(a),(b),0)
-#define _IOW(a,b,c) _IOC(1,(a),(b),sizeof(c))
-#define _IOR(a,b,c) _IOC(2,(a),(b),sizeof(c))
-#define _IOWR(a,b,c) _IOC(3,(a),(b),sizeof(c))
+#define _IOW(a,b,c) _IOC(_IOC_WRITE,(a),(b),sizeof(c))
+#define _IOR(a,b,c) _IOC(_IOC_READ,(a),(b),sizeof(c))
+#define _IOWR(a,b,c) _IOC(_IOC_READ|_IOC_WRITE,(a),(b),sizeof(c))
 
 #define TCGETS		0x5401
 #define TCSETS		0x5402

arch/mips/bits/ioctl.h

@@ -3,10 +3,10 @@
 #define _IOC_READ  2U
 #define _IOC_WRITE 4U
 
-#define _IO(a,b) _IOC(1U,(a),(b),0)
-#define _IOW(a,b,c) _IOC(4U,(a),(b),sizeof(c))
-#define _IOR(a,b,c) _IOC(2U,(a),(b),sizeof(c))
-#define _IOWR(a,b,c) _IOC(6U,(a),(b),sizeof(c))
+#define _IO(a,b) _IOC(_IOC_NONE,(a),(b),0)
+#define _IOW(a,b,c) _IOC(_IOC_WRITE,(a),(b),sizeof(c))
+#define _IOR(a,b,c) _IOC(_IOC_READ,(a),(b),sizeof(c))
+#define _IOWR(a,b,c) _IOC(_IOC_READ|_IOC_WRITE,(a),(b),sizeof(c))
 
 #define TCGETA		0x5401
 #define TCSETA		0x5402

arch/powerpc/bits/ioctl.h

-//#define _IOC(a,b,c,d) ( ((a)<<29) | ((b)<<8) | (c) | ((d)<<16) )
-//
-#define _IOC_SIZEBITS   13
-#define _IOC_DIRBITS    3
-
-#define _IOC_NRBITS     8
-#define _IOC_TYPEBITS   8
-
-#define _IOC_NRSHIFT    0
-#define _IOC_TYPESHIFT  (_IOC_NRSHIFT+_IOC_NRBITS)
-#define _IOC_SIZESHIFT  (_IOC_TYPESHIFT+_IOC_TYPEBITS)
-#define _IOC_DIRSHIFT   (_IOC_SIZESHIFT+_IOC_SIZEBITS)
-
-#define _IOC(dir,type,nr,size) \
-        (((dir)  << _IOC_DIRSHIFT) | \
-          ((type) << _IOC_TYPESHIFT) | \
-          ((nr)   << _IOC_NRSHIFT) | \
-          ((size) << _IOC_SIZESHIFT))
-
-
+#define _IOC(a,b,c,d) ( ((a)<<29) | ((b)<<8) | (c) | ((d)<<16) )
 #define _IOC_NONE  1U
 #define _IOC_WRITE 4U
 #define _IOC_READ  2U
 
 #define _IO(a,b) _IOC(_IOC_NONE,(a),(b),0)
 #define _IOW(a,b,c) _IOC(_IOC_WRITE,(a),(b),sizeof(c))
-#define _IOR(a,b,c) _IOC(_IOC_READ ,(a),(b),sizeof(c))
-#define _IOWR(a,b,c) _IOC(_IOC_READ | _IOC_WRITE,(a),(b),sizeof(c))
+#define _IOR(a,b,c) _IOC(_IOC_READ,(a),(b),sizeof(c))
+#define _IOWR(a,b,c) _IOC(_IOC_READ|_IOC_WRITE,(a),(b),sizeof(c))
 
 #define FIONCLEX	_IO('f', 2)
 #define FIOCLEX		_IO('f', 1)

arch/x86_64/bits/ioctl.h

@@ -4,9 +4,9 @@
 #define _IOC_READ  2U
 
 #define _IO(a,b) _IOC(_IOC_NONE,(a),(b),0)
-#define _IOW(a,b,c) _IOC(1,(a),(b),sizeof(c))
-#define _IOR(a,b,c) _IOC(2,(a),(b),sizeof(c))
-#define _IOWR(a,b,c) _IOC(3,(a),(b),sizeof(c))
+#define _IOW(a,b,c) _IOC(_IOC_WRITE,(a),(b),sizeof(c))
+#define _IOR(a,b,c) _IOC(_IOC_READ,(a),(b),sizeof(c))
+#define _IOWR(a,b,c) _IOC(_IOC_READ|_IOC_WRITE,(a),(b),sizeof(c))
 
 #define TCGETS		0x5401
 #define TCSETS		0x5402