Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6

[linux-2.6-omap-h63xx.git] / drivers / usb / net / rndis_host.c

diff --git a/drivers/usb/net/rndis_host.c b/drivers/usb/net/rndis_host.c
index 49991ac1bf3b843420543013c14df70dea443526..ea5f44de3de2e6aa3edbc157b394925fcb685515 100644 (file)
--- a/drivers/usb/net/rndis_host.c
+++ b/drivers/usb/net/rndis_host.c
@@ -20,7 +20,6 @@
 // #define     DEBUG                   // error path messages, extra info
 // #define     VERBOSE                 // more; success messages
 
-#include <linux/config.h>
 #include <linux/module.h>
 #include <linux/sched.h>
 #include <linux/init.h>
@@ -30,7 +29,7 @@
 #include <linux/workqueue.h>
 #include <linux/mii.h>
 #include <linux/usb.h>
-#include <linux/usb_cdc.h>
+#include <linux/usb/cdc.h>
 
 #include "usbnet.h"
 
@@ -39,6 +38,20 @@
  * RNDIS is NDIS remoted over USB.  It's a MSFT variant of CDC ACM ... of
  * course ACM was intended for modems, not Ethernet links!  USB's standard
  * for Ethernet links is "CDC Ethernet", which is significantly simpler.
+ *
+ * NOTE that Microsoft's "RNDIS 1.0" specification is incomplete.  Issues
+ * include:
+ *    - Power management in particular relies on information that's scattered
+ *     through other documentation, and which is incomplete or incorrect even
+ *     there.
+ *    - There are various undocumented protocol requirements, such as the
+ *     need to send unused garbage in control-OUT messages.
+ *    - In some cases, MS-Windows will emit undocumented requests; this
+ *     matters more to peripheral implementations than host ones.
+ *
+ * For these reasons and others, ** USE OF RNDIS IS STRONGLY DISCOURAGED ** in
+ * favor of such non-proprietary alternatives as CDC Ethernet or the newer (and
+ * currently rare) "Ethernet Emulation Model" (EEM).
  */
 
 /*
@@ -72,17 +85,17 @@ struct rndis_msg_hdr {
  */
 #define RNDIS_MSG_PACKET       ccpu2(0x00000001)       /* 1-N packets */
 #define RNDIS_MSG_INIT         ccpu2(0x00000002)
-#define RNDIS_MSG_INIT_C       (RNDIS_MSG_INIT|RNDIS_MSG_COMPLETION)
+#define RNDIS_MSG_INIT_C       (RNDIS_MSG_INIT|RNDIS_MSG_COMPLETION)
 #define RNDIS_MSG_HALT         ccpu2(0x00000003)
 #define RNDIS_MSG_QUERY                ccpu2(0x00000004)
-#define RNDIS_MSG_QUERY_C      (RNDIS_MSG_QUERY|RNDIS_MSG_COMPLETION)
+#define RNDIS_MSG_QUERY_C      (RNDIS_MSG_QUERY|RNDIS_MSG_COMPLETION)
 #define RNDIS_MSG_SET          ccpu2(0x00000005)
-#define RNDIS_MSG_SET_C        (RNDIS_MSG_SET|RNDIS_MSG_COMPLETION)
+#define RNDIS_MSG_SET_C                (RNDIS_MSG_SET|RNDIS_MSG_COMPLETION)
 #define RNDIS_MSG_RESET                ccpu2(0x00000006)
-#define RNDIS_MSG_RESET_C      (RNDIS_MSG_RESET|RNDIS_MSG_COMPLETION)
+#define RNDIS_MSG_RESET_C      (RNDIS_MSG_RESET|RNDIS_MSG_COMPLETION)
 #define RNDIS_MSG_INDICATE     ccpu2(0x00000007)
 #define RNDIS_MSG_KEEPALIVE    ccpu2(0x00000008)
-#define RNDIS_MSG_KEEPALIVE_C  (RNDIS_MSG_KEEPALIVE|RNDIS_MSG_COMPLETION)
+#define RNDIS_MSG_KEEPALIVE_C  (RNDIS_MSG_KEEPALIVE|RNDIS_MSG_COMPLETION)
 
 /* codes for "status" field of completion messages */
 #define        RNDIS_STATUS_SUCCESS            ccpu2(0x00000000)
@@ -456,7 +469,7 @@ static void rndis_unbind(struct usbnet *dev, struct usb_interface *intf)
        struct rndis_halt       *halt;
 
        /* try to clear any rndis state/activity (no i/o from stack!) */
-       halt = kcalloc(1, sizeof *halt, SLAB_KERNEL);
+       halt = kzalloc(sizeof *halt, GFP_KERNEL);
        if (halt) {
                halt->msg_type = RNDIS_MSG_HALT;
                halt->msg_len = ccpu2(sizeof *halt);
@@ -596,13 +609,13 @@ static struct usb_driver rndis_driver = {
 
 static int __init rndis_init(void)
 {
-       return usb_register(&rndis_driver);
+       return usb_register(&rndis_driver);
 }
 module_init(rndis_init);
 
 static void __exit rndis_exit(void)
 {
-       usb_deregister(&rndis_driver);
+       usb_deregister(&rndis_driver);
 }
 module_exit(rndis_exit);