diff options
| -rw-r--r-- | sound/usb/6fire/firmware.c | 25 |
1 files changed, 12 insertions, 13 deletions
diff --git a/sound/usb/6fire/firmware.c b/sound/usb/6fire/firmware.c index 1e3ae3327dd3..07bcfe4d18a7 100644 --- a/sound/usb/6fire/firmware.c +++ b/sound/usb/6fire/firmware.c @@ -16,6 +16,7 @@ #include <linux/firmware.h> #include <linux/bitrev.h> +#include <linux/kernel.h> #include "firmware.h" #include "chip.h" @@ -59,21 +60,19 @@ struct ihex_record { unsigned int txt_offset; /* current position in txt_data */ }; -static u8 usb6fire_fw_ihex_nibble(const u8 n) -{ - if (n >= '0' && n <= '9') - return n - '0'; - else if (n >= 'A' && n <= 'F') - return n - ('A' - 10); - else if (n >= 'a' && n <= 'f') - return n - ('a' - 10); - return 0; -} - static u8 usb6fire_fw_ihex_hex(const u8 *data, u8 *crc) { - u8 val = (usb6fire_fw_ihex_nibble(data[0]) << 4) | - usb6fire_fw_ihex_nibble(data[1]); + u8 val = 0; + int hval; + + hval = hex_to_bin(data[0]); + if (hval >= 0) + val |= (hval << 4); + + hval = hex_to_bin(data[1]); + if (hval >= 0) + val |= hval; + *crc += val; return val; } |