[PATCH v2] modpost: add support for hid

Jiri Slaby
2008-05-19T13:50:51Z

Generate aliases for hid device modules to support autoloading.

Signed-off-by: Jiri Slaby <jirislaby@gmail.com>
---
include/linux/hid.h | 1 +
include/linux/mod_devicetable.h | 10 ++++++++++
scripts/mod/file2alias.c | 18 ++++++++++++++++++
3 files changed, 29 insertions(+), 0 deletions(-)

diff --git a/include/linux/hid.h b/include/linux/hid.h
index 6fc10d1..8466292 100644
--- a/include/linux/hid.h
+++ b/include/linux/hid.h
@@ -69,6 +69,7 @@
#include <linux/types.h>
#include <linux/slab.h>
#include <linux/list.h>
+#include <linux/mod_devicetable.h> /* hid_device_id */
#include <linux/timer.h>
#include <linux/workqueue.h>
#include <linux/input.h>
diff --git a/include/linux/mod_devicetable.h b/include/linux/mod_devicetable.h
index d73ecea..3511694 100644
--- a/include/linux/mod_devicetable.h
+++ b/include/linux/mod_devicetable.h
@@ -131,6 +131,16 @@ struct usb_device_id {
#define USB_DEVICE_ID_MATCH_INT_SUBCLASS 0x0100
#define USB_DEVICE_ID_MATCH_INT_PROTOCOL 0x0200

+#define HID_ANY_ID (~0)
+
+struct hid_device_id {
+ __u16 bus;
+ __u32 vendor;
+ __u32 product;
+ kernel_ulong_t driver_data
+ __attribute__((aligned(sizeof(kernel_ulong_t))));
+};
+
/* s390 CCW devices */
struct ccw_device_id {
__u16 match_flags; /* which fields to match against */
diff --git a/scripts/mod/file2alias.c b/scripts/mod/file2alias.c
index cea4a79..383af1b 100644
--- a/scripts/mod/file2alias.c
+++ b/scripts/mod/file2alias.c
@@ -206,6 +206,20 @@ static void do_usb_table(void *symval, unsigned long size,
do_usb_entry_multi(symval + i, mod);
}

+/* Looks like: hid:bNvNpN */
+static int do_hid_entry(const char *filename,
+ struct hid_device_id *id, char *alias)
+{
+ id->vendor = TO_NATIVE(id->vendor);
+ id->product = TO_NATIVE(id->product);
+
+ sprintf(alias, "hid:b%04X", id->bus);
+ ADD(alias, "v", id->vendor != HID_ANY_ID, id->vendor);
+ ADD(alias, "p", id->product != HID_ANY_ID, id->product);
+
+ return 1;
+}
+
/* Looks like: ieee1394:venNmoNspNverN */
static int do_ieee1394_entry(const char *filename,
struct ieee1394_device_id *id, char *alias)
@@ -668,6 +682,10 @@ void handle_moddevtable(struct module *mod, struct elf_info *info,
else if (sym_is(symname, "__mod_usb_device_table"))
/* special case to handle bcdDevice ranges */
do_usb_table(symval, sym->st_size, mod);
+ else if (sym_is(symname, "__mod_hid_device_table"))
+ do_table(symval, sym->st_size,
+ sizeof(struct hid_device_id), "hid",
+ do_hid_entry, mod);
else if (sym_is(symname, "__mod_ieee1394_device_table"))
do_table(symval, sym->st_size,
sizeof(struct ieee1394_device_id), "ieee1394",
--
1.5.4.5