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[Qemu-devel] [PATCH 1/3] usb-redir: An interface count of 0 is a valid v
From: |
Hans de Goede |
Subject: |
[Qemu-devel] [PATCH 1/3] usb-redir: An interface count of 0 is a valid value |
Date: |
Sat, 31 Mar 2012 17:14:21 +0200 |
An interface-count of 0 happens when a device is in unconfigured state when
it gets redirected. So we should not use 0 to detect not having received
interface info from our peer.
Signed-off-by: Hans de Goede <address@hidden>
---
hw/usb/redirect.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/hw/usb/redirect.c b/hw/usb/redirect.c
index c9d22e4..9cea7c1 100644
--- a/hw/usb/redirect.c
+++ b/hw/usb/redirect.c
@@ -39,6 +39,7 @@
#include "hw/usb.h"
#define MAX_ENDPOINTS 32
+#define NO_INTERFACE_INFO 255 /* Valid interface_count always <= 32 */
#define EP2I(ep_address) (((ep_address & 0x80) >> 3) | (ep_address & 0x0f))
#define I2EP(i) (((i & 0x10) << 3) | (i & 0x0f))
@@ -968,7 +969,7 @@ static void usbredir_handle_destroy(USBDevice *udev)
static int usbredir_check_filter(USBRedirDevice *dev)
{
- if (dev->interface_info.interface_count == 0) {
+ if (dev->interface_info.interface_count == NO_INTERFACE_INFO) {
ERROR("No interface info for device\n");
goto error;
}
@@ -1132,7 +1133,7 @@ static void usbredir_device_disconnect(void *priv)
QTAILQ_INIT(&dev->endpoint[i].bufpq);
}
usb_ep_init(&dev->dev);
- dev->interface_info.interface_count = 0;
+ dev->interface_info.interface_count = NO_INTERFACE_INFO;
}
static void usbredir_interface_info(void *priv,
--
1.7.9.3
- [Qemu-devel] [PATCH 1/3] usb-redir: An interface count of 0 is a valid value,
Hans de Goede <=