staging: usbip: change the busid size

Change busid size to correspond with SYSFS_BUS_ID_SIZE, which was
already being used in most cases. This eliminates the need to define
BUS_ID_SIZE in the userspace code.
Signed-off-by: matt mooney <mfm@muteddisk.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

drivers/staging/usbip/stub.h

@@ -76,7 +76,8 @@ struct stub_unlink {
 	__u32 status;
 };
 
-#define BUSID_SIZE 20
+/* same as SYSFS_BUS_ID_SIZE */
+#define BUSID_SIZE 32
 
 struct bus_id_priv {
 	char name[BUSID_SIZE];

drivers/staging/usbip/userspace/src/usbip_bind.c

@@ -57,7 +57,7 @@ static int unbind_interface_busid(char *busid)
 		return -1;
 	}
 
-	ret = write(fd, busid, strnlen(busid, BUS_ID_SIZE));
+	ret = write(fd, busid, strnlen(busid, SYSFS_BUS_ID_SIZE));
 	if (ret < 0) {
 		dbg("write to unbind_path failed: %d", ret);
 		close(fd);
@@ -71,10 +71,11 @@ static int unbind_interface_busid(char *busid)
 
 static int unbind_interface(char *busid, int configvalue, int interface)
 {
-	char inf_busid[BUS_ID_SIZE];
+	char inf_busid[SYSFS_BUS_ID_SIZE];
 	dbg("unbinding interface");
 
-	snprintf(inf_busid, BUS_ID_SIZE, "%s:%d.%d", busid, configvalue, interface);
+	snprintf(inf_busid, SYSFS_BUS_ID_SIZE, "%s:%d.%d", busid, configvalue,
+		 interface);
 
 	return unbind_interface_busid(inf_busid);
 }
@@ -148,7 +149,7 @@ static int bind_interface_busid(char *busid, char *driver)
 	if (fd < 0)
 		return -1;
 
-	ret = write(fd, busid, strnlen(busid, BUS_ID_SIZE));
+	ret = write(fd, busid, strnlen(busid, SYSFS_BUS_ID_SIZE));
 	if (ret < 0) {
 		close(fd);
 		return -1;
@@ -161,9 +162,10 @@ static int bind_interface_busid(char *busid, char *driver)
 
 static int bind_interface(char *busid, int configvalue, int interface, char *driver)
 {
-	char inf_busid[BUS_ID_SIZE];
+	char inf_busid[SYSFS_BUS_ID_SIZE];
 
-	snprintf(inf_busid, BUS_ID_SIZE, "%s:%d.%d", busid, configvalue, interface);
+	snprintf(inf_busid, SYSFS_BUS_ID_SIZE, "%s:%d.%d", busid, configvalue,
+		 interface);
 
 	return bind_interface_busid(inf_busid, driver);
 }

drivers/staging/usbip/userspace/src/utils.c

@@ -20,7 +20,7 @@ int modify_match_busid(char *busid, int add)
 {
 	int fd;
 	int ret;
-	char buff[BUS_ID_SIZE + 4];
+	char buff[SYSFS_BUS_ID_SIZE + 4];
 	char sysfs_mntpath[SYSFS_PATH_MAX];
 	char match_busid_path[SYSFS_PATH_MAX];
 
@@ -35,7 +35,7 @@ int modify_match_busid(char *busid, int add)
 		 SYSFS_DRIVERS_NAME, USBIP_HOST_DRV_NAME);
 
 	/* BUS_IS_SIZE includes NULL termination? */
-	if (strnlen(busid, BUS_ID_SIZE) > BUS_ID_SIZE - 1) {
+	if (strnlen(busid, SYSFS_BUS_ID_SIZE) > SYSFS_BUS_ID_SIZE - 1) {
 		dbg("busid is too long");
 		return -1;
 	}
@@ -45,9 +45,9 @@ int modify_match_busid(char *busid, int add)
 		return -1;
 
 	if (add)
-		snprintf(buff, BUS_ID_SIZE + 4, "add %s", busid);
+		snprintf(buff, SYSFS_BUS_ID_SIZE + 4, "add %s", busid);
 	else
-		snprintf(buff, BUS_ID_SIZE + 4, "del %s", busid);
+		snprintf(buff, SYSFS_BUS_ID_SIZE + 4, "del %s", busid);
 
 	dbg("write \"%s\" to %s", buff, match_busid_path);
 

drivers/staging/usbip/userspace/src/utils.h

@@ -3,9 +3,6 @@
 
 #include <stdlib.h>
 
-/* Be sync to kernel header */
-#define BUS_ID_SIZE 20
-
 int modify_match_busid(char *busid, int add);
 int read_string(char *path, char *, size_t len);
 int read_integer(char *path);