Remove Clock_driver_support_shutdown_hardware()

The aim of this clock driver hook was to stop clock tick interrupts at
some late point in the exit() procedure.

The use of atexit() pulls in malloc() which pulls in errno. It is
incompatible with the intention of the
CONFIGURE_DISABLE_NEWLIB_REENTRANCY configuration option.

The exit() function must be called from thread context, so accompanied
clock tick interrupts should cause no harm.  On the contrary, someone
may assume a normal operating system operation, e.g. working timeouts.

Remove the Clock_driver_support_shutdown_hardware() clock driver hook.

Close #3436.

8 files changed, 0 insertions, 64 deletions

diff --git a/bsps/m68k/av5282/clock/clock.c b/bsps/m68k/av5282/clock/clock.c
index f6e42f254d..b1e169b4c9 100644
--- a/bsps/m68k/av5282/clock/clock.c
+++ b/bsps/m68k/av5282/clock/clock.c
@@ -26,14 +26,6 @@
     set_vector(_new, CLOCK_VECTOR, 1)
 
 /*
- * Turn off the clock
- */
-#define Clock_driver_support_shutdown_hardware()   \
-    do {                                           \
-        MCF5282_PIT3_PCSR &= ~MCF5282_PIT_PCSR_EN; \
-    } while(0)
-
-/*
  * Set up the clock hardware
  *
  * We need to have 1 interrupt every 10,000 microseconds
diff --git a/bsps/m68k/gen68360/clock/clock.c b/bsps/m68k/gen68360/clock/clock.c
index b95ca5d275..4bd3204fcb 100644
--- a/bsps/m68k/gen68360/clock/clock.c
+++ b/bsps/m68k/gen68360/clock/clock.c
@@ -55,14 +55,6 @@ static unsigned long nsec;
     set_vector(_new, CLOCK_VECTOR, 1)
 
 /*
- * Turn off the clock
- */
-#define Clock_driver_support_shutdown_hardware() \
-    do {                       \
-        m360.pitr &= ~0xFF;    \
-    } while(0)
-
-/*
  * Set up the clock hardware
  *     The rate at which the periodic interval timer
  *     can generate interrupts is almost certainly not
diff --git a/bsps/m68k/genmcf548x/clock/clock.c b/bsps/m68k/genmcf548x/clock/clock.c
index 68b7c5f61b..b3a574dab6 100644
--- a/bsps/m68k/genmcf548x/clock/clock.c
+++ b/bsps/m68k/genmcf548x/clock/clock.c
@@ -73,14 +73,6 @@
     set_vector(_new, CLOCK_IRQ + 64, 1)
 
 /*
- * Turn off the clock
- */
-#define Clock_driver_support_shutdown_hardware()                         \
-    do {                                                                 \
-        MCF548X_SLT_SCR0 &= ~(MCF548X_SLT_SCR_TEN | MCF548X_SLT_SCR_RUN | MCF548X_SLT_SCR_IEN); \
-    } while(0)
-
-/*
  * Set up the clock hardware
  *
  * We need to have 1 interrupt every 10,000 microseconds
diff --git a/bsps/m68k/mcf52235/clock/clock.c b/bsps/m68k/mcf52235/clock/clock.c
index a879a770b1..d5e1817536 100644
--- a/bsps/m68k/mcf52235/clock/clock.c
+++ b/bsps/m68k/mcf52235/clock/clock.c
@@ -53,14 +53,6 @@ static void mcf52235_tc_tick(void)
   set_vector(_new, CLOCK_VECTOR, 1)
 
 /*
- * Turn off the clock
- */
-#define Clock_driver_support_shutdown_hardware() \
-  do { \
-    MCF_PIT1_PCSR &= ~MCF_PIT_PCSR_EN; \
-  } while (0)
-
-/*
  * Set up the clock hardware
  *
  * We need to have 1 interrupt every rtems_configuration_get_microseconds_per_tick()
diff --git a/bsps/m68k/mcf5225x/clock/clock.c b/bsps/m68k/mcf5225x/clock/clock.c
index b01c37aef7..9a9c7cabe4 100644
--- a/bsps/m68k/mcf5225x/clock/clock.c
+++ b/bsps/m68k/mcf5225x/clock/clock.c
@@ -53,14 +53,6 @@ static void mcf5225x_tc_tick(void)
   set_vector(_new, CLOCK_VECTOR, 1)
 
 /*
- * Turn off the clock
- */
-#define Clock_driver_support_shutdown_hardware() \
-  do { \
-    MCF_PIT1_PCSR &= ~MCF_PIT_PCSR_EN; \
-  } while (0)
-
-/*
  * Set up the clock hardware
  *
  * We need to have 1 interrupt every BSP_rtems_configuration_get_microseconds_per_tick()
diff --git a/bsps/m68k/mcf5235/clock/clock.c b/bsps/m68k/mcf5235/clock/clock.c
index db3a5850fb..8b848de006 100644
--- a/bsps/m68k/mcf5235/clock/clock.c
+++ b/bsps/m68k/mcf5235/clock/clock.c
@@ -26,14 +26,6 @@
     set_vector(_new, CLOCK_VECTOR, 1)
 
 /*
- * Turn off the clock
- */
-#define Clock_driver_support_shutdown_hardware()   \
-    do {                                           \
-        MCF5235_PIT_PCSR3 &= ~MCF5235_PIT_PCSR_EN; \
-    } while(0)
-
-/*
  * Set up the clock hardware
  *
  * We need to have 1 interrupt every 10,000 microseconds
diff --git a/bsps/m68k/mcf5329/clock/clock.c b/bsps/m68k/mcf5329/clock/clock.c
index 5638238921..6ad46fe5a1 100644
--- a/bsps/m68k/mcf5329/clock/clock.c
+++ b/bsps/m68k/mcf5329/clock/clock.c
@@ -53,14 +53,6 @@ static void mcf5329_tc_tick(void)
   set_vector(_new, CLOCK_VECTOR, 1)
 
 /*
- * Turn off the clock
- */
-#define Clock_driver_support_shutdown_hardware() \
-  do { \
-    MCF_PIT3_PCSR &= ~MCF_PIT_PCSR_EN; \
-  } while (0)
-
-/*
  * Set up the clock hardware
  *
  * We need to have 1 interrupt every rtems_configuration_get_microseconds_per_tick()
diff --git a/bsps/m68k/uC5282/clock/clock.c b/bsps/m68k/uC5282/clock/clock.c
index 8fffdc0457..b156d660b1 100644
--- a/bsps/m68k/uC5282/clock/clock.c
+++ b/bsps/m68k/uC5282/clock/clock.c
@@ -79,14 +79,6 @@ static void uC5282_tc_tick(void)
     set_vector(_new, CLOCK_VECTOR, 1)
 
 /*
- * Turn off the clock
- */
-#define Clock_driver_support_shutdown_hardware()   \
-    do {                                           \
-        MCF5282_PIT3_PCSR &= ~MCF5282_PIT_PCSR_EN; \
-    } while(0)
-
-/*
  * Set up the clock hardware
  *
  * f_pit = f_clk / 2^(preScaleCode+1) / N  = 1/(us_per_tick/us_per_s)