arch: Disable priority inheritance on all semaphores used for signaling in all USB host drivers

arch/arm/src/efm32/efm32_usbhost.c

@@ -52,6 +52,7 @@
 #include <nuttx/arch.h>
 #include <nuttx/kmalloc.h>
 #include <nuttx/clock.h>
+#include <nuttx/semaphore.h>
 #include <nuttx/usb/usb.h>
 #include <nuttx/usb/usbhost.h>
 #include <nuttx/usb/usbhost_devaddr.h>
@@ -5157,6 +5158,12 @@ static inline void efm32_sw_initialize(FAR struct efm32_usbhost_s *priv)
   sem_init(&priv->pscsem,  0, 0);
   sem_init(&priv->exclsem, 0, 1);
 
+  /* The pscsem semaphore is used for signaling and, hence, should not have
+   * priority inheritance enabled.
+   */
+
+  sem_setprotocol(&priv->pscsem, SEM_PRIO_NONE);
+
   /* Initialize the driver state data */
 
   priv->smstate   = SMSTATE_DETACHED;
@@ -5172,8 +5179,15 @@ static inline void efm32_sw_initialize(FAR struct efm32_usbhost_s *priv)
   for (i = 0; i < EFM32_MAX_TX_FIFOS; i++)
     {
       FAR struct efm32_chan_s *chan = &priv->chan[i];
+
       chan->chidx = i;
+
+      /* The waitsem semaphore is used for signaling and, hence, should not
+       * have priority inheritance enabled.
+       */
+
       sem_init(&chan->waitsem,  0, 0);
+      sem_setprotocol(&chan->waitsem, SEM_PRIO_NONE);
     }
 }
 

arch/arm/src/lpc17xx/lpc17_usbhost.c

@@ -1,7 +1,7 @@
 /****************************************************************************
  * arch/arm/src/lpc17xx/lpc17_usbhost.c
  *
- *   Copyright (C) 2010-2012, 2014-2015 Gregory Nutt. All rights reserved.
+ *   Copyright (C) 2010-2012, 2014-2016 Gregory Nutt. All rights reserved.
  *   Authors: Rafael Noronha <rafael@pdsolucoes.com.br>
  *            Gregory Nutt <gnutt@nuttx.org>
  *
@@ -51,6 +51,7 @@
 #include <debug.h>
 
 #include <nuttx/arch.h>
+#include <nuttx/semaphore.h>
 #include <nuttx/usb/usb.h>
 #include <nuttx/usb/ohci.h>
 #include <nuttx/usb/usbhost.h>
@@ -2262,10 +2263,12 @@ static int lpc17_epalloc(struct usbhost_driver_s *drvr,
       uinfo("EP%d CTRL:%08x\n", epdesc->addr, ed->hw.ctrl);
 
       /* Initialize the semaphore that is used to wait for the endpoint
-       * WDH event.
+       * WDH event. The wdhsem semaphore is used for signaling and, hence,
+       * should not have priority inheritance enabled.
        */
 
       sem_init(&ed->wdhsem, 0, 0);
+      sem_setprotocol(&priv->wdhsem, SEM_PRIO_NONE);
 
       /* Link the common tail TD to the ED's TD list */
 
@@ -3639,6 +3642,12 @@ struct usbhost_connection_s *lpc17_usbhost_initialize(int controller)
   sem_init(&priv->pscsem,  0, 0);
   sem_init(&priv->exclsem, 0, 1);
 
+  /* The pscsem semaphore is used for signaling and, hence, should not have
+   * priority inheritance enabled.
+   */
+
+  sem_setprotocol(&priv->pscsem, SEM_PRIO_NONE);
+
 #ifndef CONFIG_USBHOST_INT_DISABLE
   priv->ininterval  = MAX_PERINTERVAL;
   priv->outinterval = MAX_PERINTERVAL;
@@ -3719,7 +3728,13 @@ struct usbhost_connection_s *lpc17_usbhost_initialize(int controller)
   memset((void *)HCCA,   0, sizeof(struct ohci_hcca_s));
   memset((void *)TDTAIL, 0, sizeof(struct ohci_gtd_s));
   memset((void *)EDCTRL, 0, sizeof(struct lpc17_ed_s));
+
+  /* The EDCTRL wdhsem semaphore is used for signaling and, hence, should
+   * not have priority inheritance enabled.
+   */
+
   sem_init(&EDCTRL->wdhsem, 0, 0);
+  sem_setprotocol(&EDCTRL->wdhsem, SEM_PRIO_NONE);
 
   /* Initialize user-configurable EDs */
 

arch/arm/src/lpc31xx/lpc31_ehci.c

@@ -52,6 +52,7 @@
 #include <nuttx/arch.h>
 #include <nuttx/kmalloc.h>
 #include <nuttx/wqueue.h>
+#include <nuttx/semaphore.h>
 #include <nuttx/usb/usb.h>
 #include <nuttx/usb/usbhost.h>
 #include <nuttx/usb/ehci.h>
@@ -3931,7 +3932,13 @@ static int lpc31_epalloc(FAR struct usbhost_driver_s *drvr,
   epinfo->maxpacket = epdesc->mxpacketsize;
   epinfo->xfrtype   = epdesc->xfrtype;
   epinfo->speed     = hport->speed;
+
+  /* The iocsem semaphore is used for signaling and, hence, should not have
+   * priority inheritance enabled.
+   */
+
   sem_init(&epinfo->iocsem, 0, 0);
+  sem_setprotocol(&epinfo->iocsem, SEM_PRIO_NONE);
 
   /* Success.. return an opaque reference to the endpoint information structure
    * instance
@@ -4916,6 +4923,12 @@ FAR struct usbhost_connection_s *lpc31_ehci_initialize(int controller)
   sem_init(&g_ehci.exclsem, 0, 1);
   sem_init(&g_ehci.pscsem,  0, 0);
 
+  /* The pscsem semaphore is used for signaling and, hence, should not have
+   * priority inheritance enabled.
+   */
+
+  sem_setprotocol(&g_ehci.pscsem, SEM_PRIO_NONE);
+
   /* Initialize EP0 */
 
   sem_init(&g_ehci.ep0.iocsem, 0, 1);
@@ -4952,7 +4965,13 @@ FAR struct usbhost_connection_s *lpc31_ehci_initialize(int controller)
       rhport->ep0.xfrtype         = USB_EP_ATTR_XFER_CONTROL;
       rhport->ep0.speed           = USB_SPEED_FULL;
       rhport->ep0.maxpacket       = 8;
+
+      /* The port iocsem semaphore is used for signaling and, hence,
+       * should not have priority inheritance enabled.
+       */
+
       sem_init(&rhport->ep0.iocsem, 0, 0);
+      sem_setprotocol(&rhport->iocsem, SEM_PRIO_NONE);
 
       /* Initialize the public port representation */
 

arch/arm/src/lpc43xx/lpc43_ehci.c

@@ -51,6 +51,7 @@
 #include <nuttx/arch.h>
 #include <nuttx/kmalloc.h>
 #include <nuttx/wqueue.h>
+#include <nuttx/semaphore.h>
 #include <nuttx/usb/usb.h>
 #include <nuttx/usb/usbhost.h>
 #include <nuttx/usb/ehci.h>
@@ -3768,7 +3769,13 @@ static int lpc43_epalloc(FAR struct usbhost_driver_s *drvr,
   epinfo->maxpacket = epdesc->mxpacketsize;
   epinfo->xfrtype   = epdesc->xfrtype;
   epinfo->speed     = hport->speed;
+
+  /* The endpoint iocsem semaphore is used for signaling and, hence,
+   * should not have priority inheritance enabled.
+   */
+
   sem_init(&epinfo->iocsem, 0, 0);
+  sem_setprotocol(&epinfo->iocsem, SEM_PRIO_NONE);
 
   /* Success.. return an opaque reference to the endpoint information structure
    * instance
@@ -4747,6 +4754,12 @@ FAR struct usbhost_connection_s *lpc43_ehci_initialize(int controller)
   sem_init(&g_ehci.exclsem, 0, 1);
   sem_init(&g_ehci.pscsem,  0, 0);
 
+  /* The pscsem semaphore is used for signaling and, hence, should not have
+   * priority inheritance enabled.
+   */
+
+  sem_setprotocol(&g_ehci.pscsem, SEM_PRIO_NONE);
+
   /* Initialize EP0 */
 
   sem_init(&g_ehci.ep0.iocsem, 0, 1);
@@ -4783,7 +4796,13 @@ FAR struct usbhost_connection_s *lpc43_ehci_initialize(int controller)
       rhport->ep0.xfrtype         = USB_EP_ATTR_XFER_CONTROL;
       rhport->ep0.speed           = USB_SPEED_FULL;
       rhport->ep0.maxpacket       = 8;
+
+      /* The EP0 iocsem semaphore is used for signaling and, hence, should
+       * not have priority inheritance enabled.
+       */
+
       sem_init(&rhport->ep0.iocsem, 0, 0);
+      sem_setprotocol(&rhport->ep0.iocsem, SEM_PRIO_NONE);
 
       /* Initialize the public port representation */
 

arch/arm/src/sama5/sam_ehci.c

@@ -51,6 +51,7 @@
 #include <nuttx/arch.h>
 #include <nuttx/kmalloc.h>
 #include <nuttx/wqueue.h>
+#include <nuttx/semaphore.h>
 #include <nuttx/usb/usb.h>
 #include <nuttx/usb/usbhost.h>
 #include <nuttx/usb/ehci.h>
@@ -3752,7 +3753,13 @@ static int sam_epalloc(FAR struct usbhost_driver_s *drvr,
   epinfo->maxpacket = epdesc->mxpacketsize;
   epinfo->xfrtype   = epdesc->xfrtype;
   epinfo->speed     = hport->speed;
+
+  /* The endpoint iocsem semaphore is used for signaling and, hence,
+   * should not have priority inheritance enabled.
+   */
+
   sem_init(&epinfo->iocsem, 0, 0);
+  sem_setprotocol(&epinfo->iocsem, SEM_PRIO_NONE);
 
   /* Success.. return an opaque reference to the endpoint information structure
    * instance
@@ -4787,6 +4794,12 @@ FAR struct usbhost_connection_s *sam_ehci_initialize(int controller)
   sem_init(&g_ehci.exclsem, 0, 1);
   sem_init(&g_ehci.pscsem,  0, 0);
 
+  /* The pscsem semaphore is used for signaling and, hence, should not have
+   * priority inheritance enabled.
+   */
+
+  sem_setprotocol(&g_ehci.pscsem, SEM_PRIO_NONE);
+
   /* Initialize EP0 */
 
   sem_init(&g_ehci.ep0.iocsem, 0, 1);
@@ -4823,7 +4836,13 @@ FAR struct usbhost_connection_s *sam_ehci_initialize(int controller)
       rhport->ep0.xfrtype         = USB_EP_ATTR_XFER_CONTROL;
       rhport->ep0.speed           = USB_SPEED_FULL;
       rhport->ep0.maxpacket       = 8;
+
+      /* The endpoint 0 iocsem semaphore is used for signaling and, hence,
+       * should not have priority inheritance enabled.
+       */
+
       sem_init(&rhport->ep0.iocsem, 0, 0);
+      sem_setprotocol(&rhport->ep0.iocsem, SEM_PRIO_NONE);
 
       /* Initialize the public port representation */
 

arch/arm/src/sama5/sam_ohci.c

@@ -1,7 +1,7 @@
 /****************************************************************************
  * arch/arm/src/sama5/sam_ohci.c
  *
- *   Copyright (C) 2013, 2015 Gregory Nutt. All rights reserved.
+ *   Copyright (C) 2013, 2015-2016 Gregory Nutt. All rights reserved.
  *   Authors: Gregory Nutt <gnutt@nuttx.org>
  *
  * Redistribution and use in source and binary forms, with or without
@@ -51,6 +51,7 @@
 #include <nuttx/arch.h>
 #include <nuttx/kmalloc.h>
 #include <nuttx/wqueue.h>
+#include <nuttx/semaphore.h>
 #include <nuttx/usb/usb.h>
 #include <nuttx/usb/ohci.h>
 #include <nuttx/usb/usbhost.h>
@@ -2664,6 +2665,12 @@ static int sam_epalloc(struct usbhost_driver_s *drvr,
 
   sem_init(&eplist->wdhsem, 0, 0);
 
+  /* The wdhsem semaphore is used for signaling and, hence, should not have
+   * priority inheritance enabled.
+   */
+
+  sem_setprotocol(&eplist->wdhsem, SEM_PRIO_NONE);
+
   /* We must have exclusive access to the ED pool, the bulk list, the periodic list
    * and the interrupt table.
    */
@@ -3903,6 +3910,12 @@ struct usbhost_connection_s *sam_ohci_initialize(int controller)
   sem_init(&g_ohci.pscsem,  0, 0);
   sem_init(&g_ohci.exclsem, 0, 1);
 
+  /* The pscsem semaphore is used for signaling and, hence, should not have
+   * priority inheritance enabled.
+   */
+
+  sem_setprotocol(&g_ohci.pscsem, SEM_PRIO_NONE);
+
 #ifndef CONFIG_USBHOST_INT_DISABLE
   g_ohci.ininterval  = MAX_PERINTERVAL;
   g_ohci.outinterval = MAX_PERINTERVAL;

arch/arm/src/stm32/stm32_otgfshost.c

@@ -52,6 +52,7 @@
 #include <nuttx/arch.h>
 #include <nuttx/kmalloc.h>
 #include <nuttx/clock.h>
+#include <nuttx/semaphore.h>
 #include <nuttx/usb/usb.h>
 #include <nuttx/usb/usbhost.h>
 #include <nuttx/usb/usbhost_devaddr.h>
@@ -5091,6 +5092,12 @@ static inline void stm32_sw_initialize(FAR struct stm32_usbhost_s *priv)
   sem_init(&priv->pscsem,  0, 0);
   sem_init(&priv->exclsem, 0, 1);
 
+  /* The pscsem semaphore is used for signaling and, hence, should not have
+   * priority inheritance enabled.
+   */
+
+  sem_setprotocol(&priv->pscsem, SEM_PRIO_NONE);
+
   /* Initialize the driver state data */
 
   priv->smstate   = SMSTATE_DETACHED;
@@ -5106,8 +5113,15 @@ static inline void stm32_sw_initialize(FAR struct stm32_usbhost_s *priv)
   for (i = 0; i < STM32_MAX_TX_FIFOS; i++)
     {
       FAR struct stm32_chan_s *chan = &priv->chan[i];
+
       chan->chidx = i;
+
+      /* The waitsem semaphore is used for signaling and, hence, should not
+       * have priority inheritance enabled.
+       */
+
       sem_init(&chan->waitsem,  0, 0);
+      sem_setprotocol(&chan->waitsem, SEM_PRIO_NONE);
     }
 }
 

arch/arm/src/stm32/stm32_otghshost.c

@@ -52,6 +52,7 @@
 #include <nuttx/arch.h>
 #include <nuttx/kmalloc.h>
 #include <nuttx/clock.h>
+#include <nuttx/semaphore.h>
 #include <nuttx/usb/usb.h>
 #include <nuttx/usb/usbhost.h>
 #include <nuttx/usb/usbhost_devaddr.h>
@@ -5091,6 +5092,12 @@ static inline void stm32_sw_initialize(FAR struct stm32_usbhost_s *priv)
   sem_init(&priv->pscsem,  0, 0);
   sem_init(&priv->exclsem, 0, 1);
 
+  /* The pscsem semaphore is used for signaling and, hence, should not have
+   * priority inheritance enabled.
+   */
+
+ sem_setprotocol(&priv->pscsem, SEM_PRIO_NONE);
+
   /* Initialize the driver state data */
 
   priv->smstate   = SMSTATE_DETACHED;
@@ -5106,8 +5113,15 @@ static inline void stm32_sw_initialize(FAR struct stm32_usbhost_s *priv)
   for (i = 0; i < STM32_MAX_TX_FIFOS; i++)
     {
       FAR struct stm32_chan_s *chan = &priv->chan[i];
+
       chan->chidx = i;
+
+      /* The waitsem semaphore is used for signaling and, hence, should not
+       * have priority inheritance enabled.
+       */
+
       sem_init(&chan->waitsem,  0, 0);
+      sem_setprotocol(&chan->waitsem, SEM_PRIO_NONE);
     }
 }
 

arch/arm/src/stm32f7/stm32_otghost.c

@@ -53,6 +53,7 @@
 #include <nuttx/arch.h>
 #include <nuttx/kmalloc.h>
 #include <nuttx/clock.h>
+#include <nuttx/semaphore.h>
 #include <nuttx/usb/usb.h>
 #include <nuttx/usb/usbhost.h>
 #include <nuttx/usb/usbhost_devaddr.h>
@@ -5089,6 +5090,12 @@ static inline void stm32_sw_initialize(FAR struct stm32_usbhost_s *priv)
   sem_init(&priv->pscsem,  0, 0);
   sem_init(&priv->exclsem, 0, 1);
 
+  /* The pscsem semaphore is used for signaling and, hence, should not have
+   * priority inheritance enabled.
+   */
+
+ sem_setprotocol(&priv->pscsem, SEM_PRIO_NONE);
+
   /* Initialize the driver state data */
 
   priv->smstate   = SMSTATE_DETACHED;
@@ -5104,8 +5111,15 @@ static inline void stm32_sw_initialize(FAR struct stm32_usbhost_s *priv)
   for (i = 0; i < STM32_MAX_TX_FIFOS; i++)
     {
       FAR struct stm32_chan_s *chan = &priv->chan[i];
+
       chan->chidx = i;
+
+      /* The waitsem semaphore is used for signaling and, hence, should not
+       * have priority inheritance enabled.
+       */
+
       sem_init(&chan->waitsem,  0, 0);
+      sem_setprotocol(&chan->waitsem, SEM_PRIO_NONE);
     }
 }
 

arch/arm/src/stm32l4/stm32l4_otgfshost.c

@@ -53,6 +53,7 @@
 #include <nuttx/arch.h>
 #include <nuttx/kmalloc.h>
 #include <nuttx/clock.h>
+#include <nuttx/semaphore.h>
 #include <nuttx/usb/usb.h>
 #include <nuttx/usb/usbhost.h>
 #include <nuttx/usb/usbhost_devaddr.h>
@@ -5096,6 +5097,12 @@ static inline void stm32l4_sw_initialize(FAR struct stm32l4_usbhost_s *priv)
   sem_init(&priv->pscsem,  0, 0);
   sem_init(&priv->exclsem, 0, 1);
 
+  /* The pscsem semaphore is used for signaling and, hence, should not have
+   * priority inheritance enabled.
+   */
+
+ sem_setprotocol(&priv->pscsem, SEM_PRIO_NONE);
+
   /* Initialize the driver state data */
 
   priv->smstate   = SMSTATE_DETACHED;
@@ -5111,8 +5118,15 @@ static inline void stm32l4_sw_initialize(FAR struct stm32l4_usbhost_s *priv)
   for (i = 0; i < STM32L4_MAX_TX_FIFOS; i++)
     {
       FAR struct stm32l4_chan_s *chan = &priv->chan[i];
+
       chan->chidx = i;
+
+      /* The waitsem semaphore is used for signaling and, hence, should not
+       * have priority inheritance enabled.
+       */
+
       sem_init(&chan->waitsem,  0, 0);
+      sem_setprotocol(&chan->waitsem, SEM_PRIO_NONE);
     }
 }