diff options
| author | Markus Klotzbuecher <mk@denx.de> | 2006-11-27 11:46:46 +0100 |
|---|---|---|
| committer | Markus Klotzbuecher <mk@pollux.denx.de> | 2006-11-27 11:46:46 +0100 |
| commit | ae3b770e4eae8e98b6e9e29662e18c47fdf0171f (patch) | |
| tree | 902aa56bab47d79b5b67e55bc13cb92a168236df /include/usb.h | |
| parent | 7b59b3c7a8ce2e4b567abf99c1cd667bf35b9418 (diff) | |
Fix some endianness issues related to the generic ohci driver
Diffstat (limited to 'include/usb.h')
| -rw-r--r-- | include/usb.h | 15 |
1 files changed, 9 insertions, 6 deletions
diff --git a/include/usb.h b/include/usb.h index fafac8934a..419a7e364a 100644 --- a/include/usb.h +++ b/include/usb.h @@ -230,16 +230,12 @@ int usb_set_interface(struct usb_device *dev, int interface, int alternate); /* big endian -> little endian conversion */ /* some CPUs are already little endian e.g. the ARM920T */ -#ifdef LITTLEENDIAN -#define swap_16(x) ((unsigned short)(x)) -#define swap_32(x) ((unsigned long)(x)) -#else -#define swap_16(x) \ +#define __swap_16(x) \ ({ unsigned short x_ = (unsigned short)x; \ (unsigned short)( \ ((x_ & 0x00FFU) << 8) | ((x_ & 0xFF00U) >> 8) ); \ }) -#define swap_32(x) \ +#define __swap_32(x) \ ({ unsigned long x_ = (unsigned long)x; \ (unsigned long)( \ ((x_ & 0x000000FFUL) << 24) | \ @@ -247,6 +243,13 @@ int usb_set_interface(struct usb_device *dev, int interface, int alternate); ((x_ & 0x00FF0000UL) >> 8) | \ ((x_ & 0xFF000000UL) >> 24) ); \ }) + +#ifdef LITTLEENDIAN +# define swap_16(x) (x) +# define swap_32(x) (x) +#else +# define swap_16(x) __swap_16(x) +# define swap_32(x) __swap_32(x) #endif /* LITTLEENDIAN */ /* |