X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=blobdiff_plain;ds=sidebyside;f=include%2Flinux%2Fihex.h;h=2baace2788a7d73cffcd12396ea2aa37dd117963;hb=414f746d232d41ed6ae8632c4495ae795373c44b;hp=df89edd890ae15f3fbfe722c0c93e456a2e9ed38;hpb=bacfe09dd7545467965e8d8f1eab20bc62dce00d;p=linux-2.6

diff --git a/include/linux/ihex.h b/include/linux/ihex.h
index df89edd890..2baace2788 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__ */