From b8d1d0c3fc27e563273a0c6d0a10ebe673ea2904 Mon Sep 17 00:00:00 2001
From: Florian Franzmann <bwlf@bandrate.org>
Date: Sat, 5 Sep 2020 16:33:08 +0200
Subject: [PATCH] Cleanup: Improve const correctness

---
 culfw.c    | 2 +-
 culfw.h    | 2 +-
 hexdump.h  | 4 ++--
 hmcfgusb.c | 4 ++--
 hmland.c   | 2 +-
 hmsniff.c  | 2 +-
 6 files changed, 8 insertions(+), 8 deletions(-)

diff --git a/culfw.c b/culfw.c
index 34d3eba..99b20cb 100644
--- a/culfw.c
+++ b/culfw.c
@@ -110,7 +110,7 @@ out:
 	return NULL;
 }
 
-int culfw_send(struct culfw_dev *dev, char *cmd, int cmdlen)
+int culfw_send(struct culfw_dev *dev, const char *cmd, int cmdlen)
 {
 	int w = 0;
 	int ret;
diff --git a/culfw.h b/culfw.h
index bbe64f5..9c98eb7 100644
--- a/culfw.h
+++ b/culfw.h
@@ -32,7 +32,7 @@ struct culfw_dev {
 };
 
 struct culfw_dev *culfw_init(char *device, uint32_t speed, culfw_cb_fn cb, void *data);
-int culfw_send(struct culfw_dev *dev, char *cmd, int cmdlen);
+int culfw_send(struct culfw_dev *dev, const char *cmd, int cmdlen);
 int culfw_poll(struct culfw_dev *dev, int timeout);
 void culfw_close(struct culfw_dev *dev);
 void culfw_flush(struct culfw_dev *dev);
diff --git a/hexdump.h b/hexdump.h
index d3d4f3b..127bfb0 100644
--- a/hexdump.h
+++ b/hexdump.h
@@ -21,7 +21,7 @@
  * IN THE SOFTWARE.
  */
 
-static void asciishow(unsigned char *buf, int len)
+static void asciishow(const unsigned char *buf, int len)
 {
 	int i;
 
@@ -35,7 +35,7 @@ static void asciishow(unsigned char *buf, int len)
 	}
 }
 
-static void hexdump(unsigned char *buf, int len, char *prefix)
+static void hexdump(const unsigned char *buf, int len, const char *prefix)
 {
 	int i, j;
 
diff --git a/hmcfgusb.c b/hmcfgusb.c
index b9b0f23..9473382 100644
--- a/hmcfgusb.c
+++ b/hmcfgusb.c
@@ -61,7 +61,7 @@ static int debug = 0;
 static int libusb_initialized = 0;
 
 /* Not in all libusb-1.0 versions, so we have to roll our own :-( */
-static char * usb_strerror(int e)
+static const char* usb_strerror(int e)
 {
 	static char unknerr[256];
 
@@ -99,7 +99,7 @@ static char * usb_strerror(int e)
 	return unknerr;
 }
 
-static char * usb_str_transfer_status(int e)
+static const char* usb_str_transfer_status(int e)
 {
 	static char unknerr[256];
 
diff --git a/hmland.c b/hmland.c
index 38e4d6b..380c99a 100644
--- a/hmland.c
+++ b/hmland.c
@@ -100,7 +100,7 @@ static void print_timestamp(FILE *f)
 	fprintf(f, "%s.%06ld: ", ts, tv.tv_usec);
 }
 
-static void write_log(char *buf, int len, char *fmt, ...)
+static void write_log(const char *buf, int len, const char *fmt, ...)
 {
 	va_list ap;
 	int i;
diff --git a/hmsniff.c b/hmsniff.c
index 01afe05..2ffb9e1 100644
--- a/hmsniff.c
+++ b/hmsniff.c
@@ -42,7 +42,7 @@
 static int verbose = 0;
 
 /* See HMConfig.pm */
-char *hm_message_types(uint8_t type, uint8_t subtype)
+const char *hm_message_types(uint8_t type, uint8_t subtype)
 {
 	switch(type) {
 		case 0x00:
-- 
2.39.2