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authorMichal Nazarewicz <mina86@mina86.com>2014-05-20 09:38:03 -1000
committerFelipe Balbi <balbi@ti.com>2014-06-19 08:51:35 -0500
commitf2af74123f8c5a735248547f4286a3adc28633c1 (patch)
tree18b2bf16a18b6e4f65f11d42fc0aaa2ec798683e
parent5cd8c48d95c10f729090c89757727e090719fd83 (diff)
downloadlinux-f2af74123f8c5a735248547f4286a3adc28633c1.tar.bz2
tools: ffs-test: convert to new descriptor format fixing compilation error
Commit [ac8dde11: “usb: gadget: f_fs: Add flags to descriptors block”] which introduced a new descriptor format for FunctionFS removed the usb_functionfs_descs_head structure, which is still used by ffs-test. tool. Convert ffs-test by converting it to use the new header format. For testing kernels prior to 3.14 (when the new format was introduced) and parsing of the legacy headers in the new kernels, provide a compilation flag to make the tool use the old format. Finally, include information as to when the legacy FunctionFS headers format has been deprecated (which is also when the new one has been introduced). Reported-by: Lad, Prabhakar <prabhakar.csengg@gmail.com> Signed-off-by: Michal Nazarewicz <mina86@mina86.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
-rw-r--r--include/uapi/linux/usb/functionfs.h2
-rw-r--r--tools/usb/Makefile6
-rw-r--r--tools/usb/ffs-test.c20
3 files changed, 24 insertions, 4 deletions
diff --git a/include/uapi/linux/usb/functionfs.h b/include/uapi/linux/usb/functionfs.h
index 2a4b4a72a4f9..ecb3a31f7ca6 100644
--- a/include/uapi/linux/usb/functionfs.h
+++ b/include/uapi/linux/usb/functionfs.h
@@ -53,7 +53,7 @@ struct usb_endpoint_descriptor_no_audio {
* structure. Any flags that are not recognised cause the whole block to be
* rejected with -ENOSYS.
*
- * Legacy descriptors format:
+ * Legacy descriptors format (deprecated as of 3.14):
*
* | off | name | type | description |
* |-----+-----------+--------------+--------------------------------------|
diff --git a/tools/usb/Makefile b/tools/usb/Makefile
index acf2165c04e6..d576b3bac3cf 100644
--- a/tools/usb/Makefile
+++ b/tools/usb/Makefile
@@ -6,7 +6,11 @@ WARNINGS = -Wall -Wextra
CFLAGS = $(WARNINGS) -g -I../include
LDFLAGS = $(PTHREAD_LIBS)
-all: testusb ffs-test
+all: testusb ffs-test ffs-test-legacy
+
+ffs-test-legacy: ffs-test.c
+ $(CC) $(CFLAGS) -o $@ $^ $(LDFLAGS) -DUSE_LEGACY_DESC_HEAD
+
%: %.c
$(CC) $(CFLAGS) -o $@ $^ $(LDFLAGS)
diff --git a/tools/usb/ffs-test.c b/tools/usb/ffs-test.c
index fe1e66b6ef40..74b353d9eb50 100644
--- a/tools/usb/ffs-test.c
+++ b/tools/usb/ffs-test.c
@@ -1,5 +1,5 @@
/*
- * ffs-test.c.c -- user mode filesystem api for usb composite function
+ * ffs-test.c -- user mode filesystem api for usb composite function
*
* Copyright (C) 2010 Samsung Electronics
* Author: Michal Nazarewicz <mina86@mina86.com>
@@ -21,6 +21,8 @@
/* $(CROSS_COMPILE)cc -Wall -Wextra -g -o ffs-test ffs-test.c -lpthread */
+/* Uncomment to make the tool use legacy FFS descriptor headers. */
+/* #define USE_LEGACY_DESC_HEAD */
#define _BSD_SOURCE /* for endian.h */
@@ -106,7 +108,15 @@ static void _msg(unsigned level, const char *fmt, ...)
/******************** Descriptors and Strings *******************************/
static const struct {
- struct usb_functionfs_descs_head header;
+ struct {
+ __le32 magic;
+ __le32 length;
+#ifndef USE_LEGACY_DESC_HEAD
+ __le32 flags;
+#endif
+ __le32 fs_count;
+ __le32 hs_count;
+ } __attribute__((packed)) header;
struct {
struct usb_interface_descriptor intf;
struct usb_endpoint_descriptor_no_audio sink;
@@ -114,7 +124,13 @@ static const struct {
} __attribute__((packed)) fs_descs, hs_descs;
} __attribute__((packed)) descriptors = {
.header = {
+#ifdef USE_LEGACY_DESC_HEAD
.magic = cpu_to_le32(FUNCTIONFS_DESCRIPTORS_MAGIC),
+#else
+ .magic = cpu_to_le32(FUNCTIONFS_DESCRIPTORS_MAGIC_V2),
+ .flags = cpu_to_le32(FUNCTIONFS_HAS_FS_DESC |
+ FUNCTIONFS_HAS_HS_DESC),
+#endif
.length = cpu_to_le32(sizeof descriptors),
.fs_count = 3,
.hs_count = 3,