Because sched_lock is now called in spin_lock_irqsave, there is no ne…

arch/arm/src/am335x/am335x_can.c

@@ -27,7 +27,6 @@
 #include <nuttx/config.h>
 
 #include <assert.h>
-#include <sched.h>
 
 #include <arch/board/board.h>
 #include <nuttx/irq.h>
@@ -1084,7 +1083,6 @@ struct can_dev_s *am335x_can_initialize(int port)
   syslog(LOG_DEBUG, "CAN%d\n", port);
 
   flags = spin_lock_irqsave(&g_can_lock);
-  sched_lock();
 
 #ifdef CONFIG_AM335X_CAN0
   if (port == 0)
@@ -1115,12 +1113,10 @@ struct can_dev_s *am335x_can_initialize(int port)
       canerr("Unsupported port: %d\n", port);
 
       spin_unlock_irqrestore(&g_can_lock, flags);
-      sched_unlock();
       return NULL;
     }
 
   spin_unlock_irqrestore(&g_can_lock, flags);
-  sched_unlock();
 
   return candev;
 }
@@ -1132,7 +1128,6 @@ void am335x_can_uninitialize(struct can_dev_s *dev)
   DEBUGASSERT(dev);
 
   flags = spin_lock_irqsave(&g_can_lock);
-  sched_lock();
 
 #ifdef CONFIG_AM335X_CAN0
   if (dev == &g_can0dev)
@@ -1160,7 +1155,6 @@ void am335x_can_uninitialize(struct can_dev_s *dev)
     }
 
   spin_unlock_irqrestore(&g_can_lock, flags);
-  sched_unlock();
 }
 
 #endif

arch/arm/src/cxd56xx/cxd56_timer.c

@@ -35,7 +35,6 @@
 #include <assert.h>
 #include <errno.h>
 #include <debug.h>
-#include <sched.h>
 
 #include <nuttx/irq.h>
 #include <nuttx/spinlock.h>
@@ -434,7 +433,6 @@ static void cxd56_setcallback(struct timer_lowerhalf_s *lower,
   irqstate_t flags;
 
   flags = spin_lock_irqsave(&priv->lock);
-  sched_lock();
 
   DEBUGASSERT(priv);
   tmrinfo("Entry: callback=%p\n", callback);
@@ -445,7 +443,6 @@ static void cxd56_setcallback(struct timer_lowerhalf_s *lower,
   priv->arg      = arg;
 
   spin_unlock_irqrestore(&priv->lock, flags);
-  sched_unlock();
 }
 
 /****************************************************************************

arch/arm/src/cxd56xx/cxd56_usbdev.c

@@ -40,7 +40,6 @@
 #include <debug.h>
 #include <fcntl.h>
 #include <stdio.h>
-#include <sched.h>
 
 #include <nuttx/arch.h>
 #include <nuttx/kmalloc.h>
@@ -1137,12 +1136,10 @@ static void cxd56_cancelrequests_nolock(struct cxd56_ep_s *privep)
 static void cxd56_cancelrequests(struct cxd56_ep_s *privep)
 {
   irqstate_t flags = spin_lock_irqsave(&privep->dev->lock);
-  sched_lock();
 
   cxd56_cancelrequests_nolock(privep);
 
   spin_unlock_irqrestore(&privep->dev->lock, flags);
-  sched_unlock();
 }
 
 /****************************************************************************
@@ -2296,11 +2293,9 @@ static int cxd56_epdisable(struct usbdev_ep_s *ep)
   /* Cancel any ongoing activity and reset the endpoint */
 
   flags = spin_lock_irqsave(&privep->dev->lock);
-  sched_lock();
   cxd56_epstall(&privep->ep, false);
   cxd56_cancelrequests_nolock(privep);
   spin_unlock_irqrestore(&privep->dev->lock, flags);
-  sched_unlock();
   return OK;
 }
 
@@ -2440,7 +2435,6 @@ static int cxd56_epsubmit(struct usbdev_ep_s *ep,
   req->result = -EINPROGRESS;
   req->xfrd   = 0;
   flags       = spin_lock_irqsave(&priv->lock);
-  sched_lock();
 
   /* If we are stalled, then drop all requests on the floor, except OUT */
 
@@ -2545,7 +2539,6 @@ static int cxd56_epsubmit(struct usbdev_ep_s *ep,
     }
 
   spin_unlock_irqrestore(&priv->lock, flags);
-  sched_unlock();
   return ret;
 }
 
@@ -2574,10 +2567,8 @@ static int cxd56_epcancel(struct usbdev_ep_s *ep,
   usbtrace(TRACE_EPCANCEL, privep->epphy);
 
   flags = spin_lock_irqsave(&privep->dev->lock);
-  sched_lock();
   cxd56_cancelrequests_nolock(privep);
   spin_unlock_irqrestore(&privep->dev->lock, flags);
-  sched_unlock();
   return OK;
 }
 
@@ -3174,7 +3165,6 @@ void arm_usbuninitialize(void)
     }
 
   flags = spin_lock_irqsave(&priv->lock);
-  sched_lock();
   cxd56_pullup(&priv->usbdev, false);
   priv->usbdev.speed = USB_SPEED_UNKNOWN;
 
@@ -3192,7 +3182,6 @@ void arm_usbuninitialize(void)
 
   cxd56_usb_clock_disable();
   spin_unlock_irqrestore(&priv->lock, flags);
-  sched_unlock();
 
   /* Clear signal */
 
@@ -3287,7 +3276,6 @@ int usbdev_unregister(struct usbdevclass_driver_s *driver)
   CLASS_UNBIND(driver, &g_usbdev.usbdev);
 
   flags = spin_lock_irqsave(&priv->lock);
-  sched_lock();
 
   /* Disable IRQs */
 
@@ -3308,7 +3296,6 @@ int usbdev_unregister(struct usbdevclass_driver_s *driver)
   cxd56_usbhwuninit();
 
   spin_unlock_irqrestore(&priv->lock, flags);
-  sched_unlock();
 
   up_pm_release_freqlock(&g_hv_lock);
   up_pm_release_wakelock(&g_wake_lock);

arch/arm/src/dm320/dm320_usbdev.c

@@ -34,7 +34,6 @@
 #include <assert.h>
 #include <errno.h>
 #include <debug.h>
-#include <sched.h>
 
 #include <nuttx/arch.h>
 #include <nuttx/kmalloc.h>
@@ -1046,12 +1045,10 @@ static int dm320_wrrequest(struct dm320_ep_s *privep)
 {
   int ret;
   irqstate_t flags = spin_lock_irqsave(&privep->dev->lock);
-  sched_lock();
 
   ret = dm320_wrrequest_nolock(privep);
 
   spin_unlock_irqrestore(&privep->dev->lock, flags);
-  sched_unlock();
 
   return ret;
 }
@@ -2028,12 +2025,10 @@ static int dm320_epdisable(struct usbdev_ep_s *ep)
   /* Cancel any ongoing activity and reset the endpoint */
 
   flags = spin_lock_irqsave(&privep->dev->lock);
-  sched_lock();
   dm320_cancelrequests(privep);
   dm320_epreset(privep->epphy);
 
   spin_unlock_irqrestore(&privep->dev->lock, flags);
-  sched_unlock();
   return OK;
 }
 
@@ -2173,7 +2168,6 @@ static int dm320_epsubmit(struct usbdev_ep_s *ep,
   req->result = -EINPROGRESS;
   req->xfrd   = 0;
   flags       = spin_lock_irqsave(&priv->lock);
-  sched_lock();
 
   /* Check for NULL packet */
 
@@ -2234,7 +2228,6 @@ static int dm320_epsubmit(struct usbdev_ep_s *ep,
     }
 
   spin_unlock_irqrestore(&priv->lock, flags);
-  sched_unlock();
   return ret;
 }
 
@@ -2265,10 +2258,8 @@ static int dm320_epcancel(struct usbdev_ep_s *ep,
   priv = privep->dev;
 
   flags = spin_lock_irqsave(&priv->lock);
-  sched_lock();
   dm320_cancelrequests(privep);
   spin_unlock_irqrestore(&priv->lock, flags);
-  sched_unlock();
   return OK;
 }