X-Git-Url: http://pilppa.org/gitweb/gitweb.cgi?a=blobdiff_plain;f=drivers%2Fusb%2Fcore%2Fdevices.c;h=87c794d60aa021ee3b6f1108e2cef34fb519f4c4;hb=af5b14c49aad13de1c8e9e1abfbabe127c3af92e;hp=a47c30b2d7645cfc1cdde964a31753596961c5e1;hpb=a3cc2de9138f1ee1581f55927f33f7d72ed6207d;p=linux-2.6-omap-h63xx.git

diff --git a/drivers/usb/core/devices.c b/drivers/usb/core/devices.c
index a47c30b2d76..87c794d60aa 100644
--- a/drivers/usb/core/devices.c
+++ b/drivers/usb/core/devices.c
@@ -102,6 +102,10 @@ static const char *format_config =
 /* C:  #Ifs=dd Cfg#=dd Atr=xx MPwr=dddmA */
   "C:%c #Ifs=%2d Cfg#=%2d Atr=%02x MxPwr=%3dmA\n";
   
+static const char *format_iad =
+/* A:  FirstIf#=dd IfCount=dd Cls=xx(sssss) Sub=xx Prot=xx */
+  "A:  FirstIf#=%2d IfCount=%2d Cls=%02x(%-5s) Sub=%02x Prot=%02x\n";
+
 static const char *format_iface =
 /* I:  If#=dd Alt=dd #EPs=dd Cls=xx(sssss) Sub=xx Prot=xx Driver=xxxx*/
   "I:%c If#=%2d Alt=%2d #EPs=%2d Cls=%02x(%-5s) Sub=%02x Prot=%02x Driver=%s\n";
@@ -146,6 +150,7 @@ static const struct class_info clas_info[] =
 	{USB_CLASS_STILL_IMAGE,		"still"},
 	{USB_CLASS_CSCID,		"scard"},
 	{USB_CLASS_CONTENT_SEC,		"c-sec"},
+	{USB_CLASS_VIDEO,		"video"},
 	{-1,				"unk."}		/* leave as last */
 };
 
@@ -246,7 +251,6 @@ static char *usb_dump_interface_descriptor(char *start, char *end,
 
 	if (start > end)
 		return start;
-	down_read(&usb_bus_type.subsys.rwsem);
 	if (iface) {
 		driver_name = (iface->dev.driver
 				? iface->dev.driver->name
@@ -263,7 +267,6 @@ static char *usb_dump_interface_descriptor(char *start, char *end,
 			 desc->bInterfaceSubClass,
 			 desc->bInterfaceProtocol,
 			 driver_name);
-	up_read(&usb_bus_type.subsys.rwsem);
 	return start;
 }
 
@@ -288,6 +291,21 @@ static char *usb_dump_interface(
 	return start;
 }
 
+static char *usb_dump_iad_descriptor(char *start, char *end,
+	const struct usb_interface_assoc_descriptor *iad)
+{
+	if (start > end)
+		return start;
+	start += sprintf(start, format_iad,
+			 iad->bFirstInterface,
+			 iad->bInterfaceCount,
+			 iad->bFunctionClass,
+			 class_decode(iad->bFunctionClass),
+			 iad->bFunctionSubClass,
+			 iad->bFunctionProtocol);
+	return start;
+}
+
 /* TBD:
  * 0. TBDs
  * 1. marking active interface altsettings (code lists all, but should mark
@@ -324,6 +342,12 @@ static char *usb_dump_config (
 	if (!config)		/* getting these some in 2.3.7; none in 2.3.6 */
 		return start + sprintf(start, "(null Cfg. desc.)\n");
 	start = usb_dump_config_descriptor(start, end, &config->desc, active);
+	for (i = 0; i < USB_MAXIADS; i++) {
+		if (config->intf_assoc[i] == NULL)
+			break;
+		start = usb_dump_iad_descriptor(start, end,
+					config->intf_assoc[i]);
+	}
 	for (i = 0; i < config->desc.bNumInterfaces; i++) {
 		intfc = config->intf_cache[i];
 		interface = config->interface[i];
@@ -604,10 +628,6 @@ static unsigned int usb_device_poll(struct file *file, struct poll_table_struct
 	lock_kernel();
 	if (!st) {
 		st = kmalloc(sizeof(struct usb_device_status), GFP_KERNEL);
-		if (!st) {
-			unlock_kernel();
-			return POLLIN;
-		}
 
 		/* we may have dropped BKL - need to check for having lost the race */
 		if (file->private_data) {
@@ -615,6 +635,11 @@ static unsigned int usb_device_poll(struct file *file, struct poll_table_struct
 			st = file->private_data;
 			goto lost_race;
 		}
+		/* we haven't lost - check for allocation failure now */
+		if (!st) {
+			unlock_kernel();
+			return POLLIN;
+		}
 
 		/*
 		 * need to prevent the module from being unloaded, since