diff options
| -rw-r--r-- | include/linux/ihex.h | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/include/linux/ihex.h b/include/linux/ihex.h index df89edd890a..2baace2788a 100644 --- a/include/linux/ihex.h +++ b/include/linux/ihex.h @@ -9,6 +9,7 @@ #include <linux/types.h> #include <linux/firmware.h> +#include <linux/device.h> /* Intel HEX files actually limit the length to 256 bytes, but we have drivers which would benefit from using separate records which are @@ -47,4 +48,27 @@ static inline int ihex_validate_fw(const struct firmware *fw) } return -EINVAL; } + +/* Request firmware and validate it so that we can trust we won't + * run off the end while reading records... */ +static inline int request_ihex_firmware(const struct firmware **fw, + const char *fw_name, + struct device *dev) +{ + const struct firmware *lfw; + int ret; + + ret = request_firmware(&lfw, fw_name, dev); + if (ret) + return ret; + ret = ihex_validate_fw(lfw); + if (ret) { + dev_err(dev, "Firmware \"%s\" not valid IHEX records\n", + fw_name); + release_firmware(lfw); + return ret; + } + *fw = lfw; + return 0; +} #endif /* __LINUX_IHEX_H__ */ |