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fixed hotplug regsiter/unregister with default context

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* plus additional parameter validation
This commit is contained in:
Pete Batard
2011-01-23 00:22:07 +00:00
parent 77815429f2
commit 8293cbdc4e
1 changed files with 6 additions and 0 deletions
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libusb/core.c
+6
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@@ -1884,6 +1884,7 @@ void API_EXPORTED libusb_register_hotplug_listeners(
libusb_context *ctx, libusb_hotplug_cb_fn connected_cb,
libusb_hotplug_cb_fn disconnected_cb, void *user_data)
{
USBI_GET_CONTEXT(ctx);
usbi_mutex_lock(&ctx->hotplug_listener_lock);
ctx->hotplug_connected_listener = connected_cb;
ctx->hotplug_disconnected_listener = disconnected_cb;
@@ -1894,6 +1895,7 @@ void API_EXPORTED libusb_register_hotplug_listeners(
/* TODO: doc */
void API_EXPORTED libusb_unregister_hotplug_listeners(libusb_context *ctx)
{
USBI_GET_CONTEXT(ctx);
usbi_mutex_lock(&ctx->hotplug_listener_lock);
ctx->hotplug_connected_listener = 0;
ctx->hotplug_disconnected_listener = 0;
@@ -1904,6 +1906,8 @@ void API_EXPORTED libusb_unregister_hotplug_listeners(libusb_context *ctx)
/* TODO: doc */
int API_EXPORTED libusb_get_status(libusb_device *dev)
{
if (dev == NULL)
return LIBUSB_ERROR_INVALID_PARAM;
return dev->status_online;
}
@@ -2034,6 +2038,8 @@ int usbi_notify_device_state(struct libusb_device *dev, int new_state)
libusb_hotplug_cb_fn disconnected_cb;
void* user_data;
if (dev == NULL)
return LIBUSB_ERROR_INVALID_PARAM;
usbi_mutex_lock(&dev->ctx->hotplug_listener_lock);
connected_cb = dev->ctx->hotplug_connected_listener;
disconnected_cb = dev->ctx->hotplug_disconnected_listener;