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Fix USB hub bugs: Don't allocate port EP0 until needed, otherwise run out of endpoints; using wrong pointer to access child endpoint array in a few places

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This commit is contained in:
Gregory Nutt 2015-04-23 09:42:58 -06:00
parent 167f406050
commit ab17603ceb
2 changed files with 65 additions and 68 deletions
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99
drivers/usbhost/usbhost_hub.c
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@ -192,10 +192,10 @@ static struct usbhost_registry_s g_hub =
****************************************************************************/
/****************************************************************************
* Name: usbhost_hport_free
* Name: usbhost_hport_deactivate
*
* Description:
* Free a hub resource previously allocated by usbhost_hport_initialize().
* Free a hub resource previously allocated by usbhost_hport_activate().
*
* Input Parameters:
* hport - A reference to the hub port instance to be freed.
@ -205,11 +205,15 @@ static struct usbhost_registry_s g_hub =
*
****************************************************************************/
static inline void usbhost_hport_free(FAR struct usbhost_hubport_s *hport)
static inline void usbhost_hport_deactivate(FAR struct usbhost_hubport_s *hport)
{
uvdbg("Freeing: %p\n", hport);
uvdbg("Deactivating: %d\n", hport->port);
/* Free endpoints */
/* Don't deactivate root hub ports! */
if (!ROOTHUB(hport))
{
/* Free the control endpoint */
if (hport->ep0 != NULL)
{
@ -217,60 +221,49 @@ static inline void usbhost_hport_free(FAR struct usbhost_hubport_s *hport)
hport->ep0 = NULL;
}
/* Free the function address */
/* Free the function address if one has been assigned */
usbhost_devaddr_destroy(hport);
hport->funcaddr = 0;
DEBUGASSERT(hport->devclass == NULL);
}
}
/****************************************************************************
* Name: usbhost_hport_initialize
* Name: usbhost_hport_activate
*
* Description:
* Initialize and configure an
* This is really part of the logic that implements the create() method
* of struct usbhost_registry_s. This function allocates memory for one
* new class instance.
* Activate a hub port by assigning it a control endpoint. This actions
* only occur when a device is connected to the hub endpoint.
*
* Input Parameters:
* None
* hport - The hub port to be activated.
*
* Returned Values:
* On success, this function will return a non-NULL instance of struct
* usbhost_class_s. NULL is returned on failure; this function will
* will fail only if there are insufficient resources to create another
* USB host class instance.
* Zero (OK) is returned on success; a negated errno value is returned
* on any failure.
*
****************************************************************************/
static int usbhost_hport_initialize(FAR struct usbhost_driver_s *drvr,
FAR struct usbhost_class_s *hubclass,
uint8_t port,
FAR struct usbhost_hubport_s *child)
static int usbhost_hport_activate(FAR struct usbhost_hubport_s *hport)
{
FAR struct usbhost_hubport_s *parent = hubclass->hport;
struct usbhost_epdesc_s epdesc;
int ret;
child->drvr = drvr;
child->parent = parent;
child->funcaddr = 0;
child->speed = USB_SPEED_FULL;
uvdbg("Activating port %d\n", hport->port);
epdesc.hport = child;
epdesc.hport = hport;
epdesc.addr = 0;
epdesc.in = 0;
epdesc.in = false;
epdesc.xfrtype = USB_EP_ATTR_XFER_CONTROL;
epdesc.interval = 0;
epdesc.mxpacketsize = 8;
epdesc.mxpacketsize = (hport->speed == USB_SPEED_HIGH) ? 64 : 8;
ret = DRVR_EPALLOC(drvr, &epdesc, &child->ep0);
if (ret != OK)
ret = DRVR_EPALLOC(hport->drvr, &epdesc, &hport->ep0);
if (ret < 0)
{
udbg("ERROR: Failed to allocate ep0: %d\n", ret);
usbhost_hport_free(child);
}
return ret;
@ -334,12 +327,12 @@ static void usbhost_destroy(FAR void *arg)
FAR struct usbhost_hubport_s *hport;
int port;
uvdbg("crefs: %d\n", priv->crefs);
DEBUGASSERT(hubclass != NULL && hubclass->hport != NULL);
priv = &((FAR struct usbhost_hubclass_s *)hubclass)->hubpriv;
hport = hubclass->hport;
uvdbg("crefs: %d\n", priv->crefs);
/* Destroy the interrupt IN endpoint */
if (priv->intin)
@ -362,7 +355,7 @@ static void usbhost_destroy(FAR void *arg)
/* Free any resource use by the hub port */
usbhost_hport_free(hport);
usbhost_hport_deactivate(hport);
}
/* Destroy the semaphores */
@ -936,7 +929,7 @@ static void usbhost_hubevent(FAR void *arg)
(void)DRVR_CTRLOUT(hport->drvr, hport->ep0, ctrlreq, NULL);
}
connport = &hubclass->hport[port];
connport = &priv->hport[port];
if (status & USBHUB_PORT_STAT_HIGH_SPEED)
{
connport->speed = USB_SPEED_HIGH;
@ -950,12 +943,23 @@ static void usbhost_hubevent(FAR void *arg)
connport->speed = USB_SPEED_FULL;
}
/* Activate the hub port by assigning it a control endpoint. */
ret = usbhost_hport_activate(connport);
if (ret < 0)
{
udbg("ERROR: usbhost_hport_activate failed: %d\n", ret);
}
else
{
/* Inform waiters that a new device has been connected */
ret = DRVR_CONNECT(connport->drvr, connport, true);
if (ret < 0)
{
udbg("ERROR: DRVR_CONNECT failed: %d\n", ret);
usbhost_hport_deactivate(connport);
}
}
}
else
@ -1155,26 +1159,21 @@ static FAR struct usbhost_class_s *
for (port = 0; port < USBHUB_MAX_PORTS; port++)
{
FAR struct usbhost_hubport_s *child;
/* Initialize the hub port descriptor */
ret = usbhost_hport_initialize(hport->drvr, hubclass, port,
&hubclass->hport[port]);
if (ret < 0)
{
goto errout_with_hports;
}
child = &priv->hport[port];
memset(child, 0, sizeof(struct usbhost_hubport_s));
child->drvr = hport->drvr;
child->parent = hport;
child->port = port;
child->speed = USB_SPEED_FULL;
}
return hubclass;
errout_with_hports:
for (port = 0; port < USBHUB_MAX_PORTS; port++)
{
/* Free resource used by hub port descriptor */
usbhost_hport_free(hport);
}
errout_with_ctrlreq:
kmm_free(priv->ctrlreq);
@ -1201,8 +1200,6 @@ errout_with_hub:
* configdesc - A pointer to a uint8_t buffer container the configuration
* descriptor.
* desclen - The length in bytes of the configuration descriptor.
* funcaddr - The USB address of the function containing the endpoint that
* EP0 controls
*
* Returned Values:
* On success, zero (OK) is returned. On a failure, a negated errno value is