diff options
Diffstat (limited to 'usb_device.h')
| -rw-r--r-- | usb_device.h | 21 |
1 files changed, 19 insertions, 2 deletions
diff --git a/usb_device.h b/usb_device.h index d3796757..b2c7656e 100644 --- a/usb_device.h +++ b/usb_device.h @@ -27,10 +27,18 @@ #include <libusb.h> #include <stdint.h> +#include <stdbool.h> + +/* + * The LIBUSB_ERROR macro converts a libusb failure code into an error code that + * flashrom recognizes. It does so without displaying an error code allowing us + * to compare error codes against the library enumeration values. + */ +#define LIBUSB_ERROR(eror_code) (0x20000 | -eror_code) /* * The LIBUSB macro converts a libusb failure code into an error code that - * flashrom recognizes. It also displays additional libusb specific + * flashrom recognizes. It also displays additional libusb specific * information about the failure. */ #define LIBUSB(expression) \ @@ -42,7 +50,7 @@ __FILE__, \ __LINE__, \ libusb_error_name(libusb_error__)); \ - libusb_error__ = 0x20000 | -libusb_error__; \ + libusb_error__ = LIBUSB_ERROR(libusb_error__); \ } else { \ libusb_error__ = 0; \ } \ @@ -51,6 +59,15 @@ }) /* + * Returns true if the error code falls within the range of valid libusb + * error codes. + */ +static inline bool usb_device_is_libusb_error(int error_code) +{ + return (0x20000 <= error_code && error_code < 0x20064); +} + +/* * A USB match and associated value struct are used to encode the information * about a device against which we wish to match. If the value of a * usb_match_value has been set then a device must match that value. The name |