CRIS changes for 3.20

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Merge tag 'cris-for-3.20' of git://git.kernel.org/pub/scm/linux/kernel/git/jesper/cris

Pull CRIS changes from Jesper Nilsson.

* tag 'cris-for-3.20' of git://git.kernel.org/pub/scm/linux/kernel/git/jesper/cris:
  CRIS: Whitespace cleanup
  CRIS: macro whitespace fixes in uaccess.h
  CRIS: uaccess: fix sparse errors
  CRISv32: Remove unnecessary KERN_INFO from sync_serial
  CRIS: Fix missing NR_CPUS in menuconfig
  CRISv32: Avoid warning of unused variable
  CRIS: Avoid warning in cris mm/fault.c
  CRIS: Export csum_partial_copy_nocheck

arch/cris/Kconfig

@@ -57,6 +57,10 @@ config HZ
 	int
 	default 100
 
+config NR_CPUS
+	int
+	default "1"
+
 source "init/Kconfig"
 
 source "kernel/Kconfig.freezer"

arch/cris/arch-v32/drivers/sync_serial.c

@@ -1286,7 +1286,7 @@ static void start_dma_out(struct sync_port *port, const char *data, int count)
 
 		tr_cfg.tr_en = regk_sser_yes;
 		REG_WR(sser, port->regi_sser, rw_tr_cfg, tr_cfg);
-		DEBUGTRDMA(pr_info(KERN_INFO "dma s\n"););
+		DEBUGTRDMA(pr_info("dma s\n"););
 	} else {
 		DMA_CONTINUE_DATA(port->regi_dmaout);
 		DEBUGTRDMA(pr_info("dma c\n"););
@@ -1443,7 +1443,7 @@ static inline void handle_rx_packet(struct sync_port *port)
 	reg_dma_rw_ack_intr ack_intr = { .data = regk_dma_yes };
 	unsigned long flags;
 
-	DEBUGRXINT(pr_info(KERN_INFO "!"));
+	DEBUGRXINT(pr_info("!"));
 	spin_lock_irqsave(&port->lock, flags);
 
 	/* If we overrun the user experience is crap regardless if we

arch/cris/arch-v32/kernel/time.c

@@ -107,8 +107,10 @@ static short int watchdog_key = 42;  /* arbitrary 7 bit number */
  * is used though, so set this really low. */
 #define WATCHDOG_MIN_FREE_PAGES 8
 
+#if defined(CONFIG_ETRAX_WATCHDOG_NICE_DOGGY)
 /* for reliable NICE_DOGGY behaviour */
 static int bite_in_progress;
+#endif
 
 void reset_watchdog(void)
 {
@@ -155,7 +157,9 @@ void handle_watchdog_bite(struct pt_regs *regs)
 
 	nmi_enter();
 	oops_in_progress = 1;
+#if defined(CONFIG_ETRAX_WATCHDOG_NICE_DOGGY)
 	bite_in_progress = 1;
+#endif
 	printk(KERN_WARNING "Watchdog bite\n");
 
 	/* Check if forced restart or unexpected watchdog */

arch/cris/include/asm/uaccess.h

@@ -1,4 +1,4 @@
-/* 
+/*
  * Authors:    Bjorn Wesen (bjornw@axis.com)
  *	       Hans-Peter Nilsson (hp@axis.com)
  */
@@ -35,7 +35,7 @@
 #define MAKE_MM_SEG(s)	((mm_segment_t) { (s) })
 
 /* addr_limit is the maximum accessible address for the task. we misuse
- * the KERNEL_DS and USER_DS values to both assign and compare the 
+ * the KERNEL_DS and USER_DS values to both assign and compare the
  * addr_limit values through the equally misnamed get/set_fs macros.
  * (see above)
  */
@@ -47,12 +47,13 @@
 #define get_fs()	(current_thread_info()->addr_limit)
 #define set_fs(x)	(current_thread_info()->addr_limit = (x))
 
-#define segment_eq(a,b)	((a).seg == (b).seg)
+#define segment_eq(a, b)	((a).seg == (b).seg)
 
 #define __kernel_ok (segment_eq(get_fs(), KERNEL_DS))
-#define __user_ok(addr,size) (((size) <= TASK_SIZE)&&((addr) <= TASK_SIZE-(size)))
-#define __access_ok(addr,size) (__kernel_ok || __user_ok((addr),(size)))
-#define access_ok(type,addr,size) __access_ok((unsigned long)(addr),(size))
+#define __user_ok(addr, size) \
+	(((size) <= TASK_SIZE) && ((addr) <= TASK_SIZE-(size)))
+#define __access_ok(addr, size) (__kernel_ok || __user_ok((addr), (size)))
+#define access_ok(type, addr, size) __access_ok((unsigned long)(addr), (size))
 
 #include <arch/uaccess.h>
 
@@ -69,8 +70,7 @@
  * on our cache or tlb entries.
  */
 
-struct exception_table_entry
-{
+struct exception_table_entry {
 	unsigned long insn, fixup;
 };
 
@@ -92,56 +92,74 @@ struct exception_table_entry
  * CRIS, we can just do these as direct assignments.  (Of course, the
  * exception handling means that it's no longer "just"...)
  */
-#define get_user(x,ptr) \
-  __get_user_check((x),(ptr),sizeof(*(ptr)))
-#define put_user(x,ptr) \
-  __put_user_check((__typeof__(*(ptr)))(x),(ptr),sizeof(*(ptr)))
+#define get_user(x, ptr) \
+	__get_user_check((x), (ptr), sizeof(*(ptr)))
+#define put_user(x, ptr) \
+	__put_user_check((__typeof__(*(ptr)))(x), (ptr), sizeof(*(ptr)))
 
-#define __get_user(x,ptr) \
-  __get_user_nocheck((x),(ptr),sizeof(*(ptr)))
-#define __put_user(x,ptr) \
-  __put_user_nocheck((__typeof__(*(ptr)))(x),(ptr),sizeof(*(ptr)))
+#define __get_user(x, ptr) \
+	__get_user_nocheck((x), (ptr), sizeof(*(ptr)))
+#define __put_user(x, ptr) \
+	__put_user_nocheck((__typeof__(*(ptr)))(x), (ptr), sizeof(*(ptr)))
 
 extern long __put_user_bad(void);
 
-#define __put_user_size(x,ptr,size,retval)			\
-do {								\
-	retval = 0;						\
-	switch (size) {						\
-	  case 1: __put_user_asm(x,ptr,retval,"move.b"); break;	\
-	  case 2: __put_user_asm(x,ptr,retval,"move.w"); break;	\
-	  case 4: __put_user_asm(x,ptr,retval,"move.d"); break;	\
-	  case 8: __put_user_asm_64(x,ptr,retval); break;	\
-	  default: __put_user_bad();				\
-	}							\
+#define __put_user_size(x, ptr, size, retval)				\
+do {									\
+	retval = 0;							\
+	switch (size) {							\
+	case 1:								\
+		__put_user_asm(x, ptr, retval, "move.b");		\
+		break;							\
+	case 2:								\
+		__put_user_asm(x, ptr, retval, "move.w");		\
+		break;							\
+	case 4:								\
+		__put_user_asm(x, ptr, retval, "move.d");		\
+		break;							\
+	case 8:								\
+		__put_user_asm_64(x, ptr, retval);			\
+		break;							\
+	default:							\
+		__put_user_bad();					\
+	}								\
 } while (0)
 
-#define __get_user_size(x,ptr,size,retval)			\
-do {								\
-	retval = 0;						\
-	switch (size) {						\
-	  case 1: __get_user_asm(x,ptr,retval,"move.b"); break;	\
-	  case 2: __get_user_asm(x,ptr,retval,"move.w"); break;	\
-	  case 4: __get_user_asm(x,ptr,retval,"move.d"); break;	\
-	  case 8: __get_user_asm_64(x,ptr,retval); break;	\
-	  default: (x) = __get_user_bad();			\
-	}							\
+#define __get_user_size(x, ptr, size, retval)				\
+do {									\
+	retval = 0;							\
+	switch (size) {							\
+	case 1:								\
+		__get_user_asm(x, ptr, retval, "move.b");		\
+		break;							\
+	case 2:								\
+		__get_user_asm(x, ptr, retval, "move.w");		\
+		break;							\
+	case 4:								\
+		__get_user_asm(x, ptr, retval, "move.d");		\
+		break;							\
+	case 8:								\
+		__get_user_asm_64(x, ptr, retval);			\
+		break;							\
+	default:							\
+		(x) = __get_user_bad();					\
+	}								\
 } while (0)
 
-#define __put_user_nocheck(x,ptr,size)			\
+#define __put_user_nocheck(x, ptr, size)		\
 ({							\
 	long __pu_err;					\
-	__put_user_size((x),(ptr),(size),__pu_err);	\
+	__put_user_size((x), (ptr), (size), __pu_err);	\
 	__pu_err;					\
 })
 
-#define __put_user_check(x,ptr,size)				\
-({								\
-	long __pu_err = -EFAULT;				\
-	__typeof__(*(ptr)) *__pu_addr = (ptr);			\
-	if (access_ok(VERIFY_WRITE,__pu_addr,size))		\
-		__put_user_size((x),__pu_addr,(size),__pu_err);	\
-	__pu_err;						\
+#define __put_user_check(x, ptr, size)					\
+({									\
+	long __pu_err = -EFAULT;					\
+	__typeof__(*(ptr)) *__pu_addr = (ptr);				\
+	if (access_ok(VERIFY_WRITE, __pu_addr, size))			\
+		__put_user_size((x), __pu_addr, (size), __pu_err);	\
+	__pu_err;							\
 })
 
 struct __large_struct { unsigned long buf[100]; };
@@ -149,21 +167,21 @@ struct __large_struct { unsigned long buf[100]; };
 
 
 
-#define __get_user_nocheck(x,ptr,size)				\
+#define __get_user_nocheck(x, ptr, size)			\
 ({								\
 	long __gu_err, __gu_val;				\
-	__get_user_size(__gu_val,(ptr),(size),__gu_err);	\
-	(x) = (__typeof__(*(ptr)))__gu_val;			\
+	__get_user_size(__gu_val, (ptr), (size), __gu_err);	\
+	(x) = (__force __typeof__(*(ptr)))__gu_val;		\
 	__gu_err;						\
 })
 
-#define __get_user_check(x,ptr,size)					\
+#define __get_user_check(x, ptr, size)					\
 ({									\
 	long __gu_err = -EFAULT, __gu_val = 0;				\
 	const __typeof__(*(ptr)) *__gu_addr = (ptr);			\
-	if (access_ok(VERIFY_READ,__gu_addr,size))			\
-		__get_user_size(__gu_val,__gu_addr,(size),__gu_err);	\
-	(x) = (__typeof__(*(ptr)))__gu_val;				\
+	if (access_ok(VERIFY_READ, __gu_addr, size))			\
+		__get_user_size(__gu_val, __gu_addr, (size), __gu_err);	\
+	(x) = (__force __typeof__(*(ptr)))__gu_val;			\
 	__gu_err;							\
 })
 
@@ -180,7 +198,7 @@ static inline unsigned long
 __generic_copy_to_user(void __user *to, const void *from, unsigned long n)
 {
 	if (access_ok(VERIFY_WRITE, to, n))
-		return __copy_user(to,from,n);
+		return __copy_user(to, from, n);
 	return n;
 }
 
@@ -188,7 +206,7 @@ static inline unsigned long
 __generic_copy_from_user(void *to, const void __user *from, unsigned long n)
 {
 	if (access_ok(VERIFY_READ, from, n))
-		return __copy_user_zeroing(to,from,n);
+		return __copy_user_zeroing(to, from, n);
 	return n;
 }
 
@@ -196,7 +214,7 @@ static inline unsigned long
 __generic_clear_user(void __user *to, unsigned long n)
 {
 	if (access_ok(VERIFY_WRITE, to, n))
-		return __do_clear_user(to,n);
+		return __do_clear_user(to, n);
 	return n;
 }
 
@@ -210,6 +228,7 @@ static inline long
 strncpy_from_user(char *dst, const char __user *src, long count)
 {
 	long res = -EFAULT;
+
 	if (access_ok(VERIFY_READ, src, 1))
 		res = __do_strncpy_from_user(dst, src, count);
 	return res;
@@ -223,6 +242,7 @@ static inline unsigned long
 __constant_copy_from_user(void *to, const void __user *from, unsigned long n)
 {
 	unsigned long ret = 0;
+
 	if (n == 0)
 		;
 	else if (n == 1)
@@ -273,6 +293,7 @@ static inline unsigned long
 __constant_copy_to_user(void __user *to, const void *from, unsigned long n)
 {
 	unsigned long ret = 0;
+
 	if (n == 0)
 		;
 	else if (n == 1)
@@ -323,6 +344,7 @@ static inline unsigned long
 __constant_clear_user(void __user *to, unsigned long n)
 {
 	unsigned long ret = 0;
+
 	if (n == 0)
 		;
 	else if (n == 1)
@@ -350,20 +372,20 @@ __constant_clear_user(void __user *to, unsigned long n)
 }
 
 
-#define clear_user(to, n)			\
-(__builtin_constant_p(n) ?			\
- __constant_clear_user(to, n) :			\
- __generic_clear_user(to, n))
+#define clear_user(to, n)				\
+	(__builtin_constant_p(n) ?			\
+	 __constant_clear_user(to, n) :			\
+	 __generic_clear_user(to, n))
 
-#define copy_from_user(to, from, n)		\
-(__builtin_constant_p(n) ?			\
- __constant_copy_from_user(to, from, n) :	\
- __generic_copy_from_user(to, from, n))
+#define copy_from_user(to, from, n)			\
+	(__builtin_constant_p(n) ?			\
+	 __constant_copy_from_user(to, from, n) :	\
+	 __generic_copy_from_user(to, from, n))
 
-#define copy_to_user(to, from, n)		\
-(__builtin_constant_p(n) ?			\
- __constant_copy_to_user(to, from, n) :		\
- __generic_copy_to_user(to, from, n))
+#define copy_to_user(to, from, n)			\
+	(__builtin_constant_p(n) ?			\
+	 __constant_copy_to_user(to, from, n) :		\
+	 __generic_copy_to_user(to, from, n))
 
 /* We let the __ versions of copy_from/to_user inline, because they're often
  * used in fast paths and have only a small space overhead.
@@ -373,29 +395,31 @@ static inline unsigned long
 __generic_copy_from_user_nocheck(void *to, const void __user *from,
 				 unsigned long n)
 {
-	return __copy_user_zeroing(to,from,n);
+	return __copy_user_zeroing(to, from, n);
 }
 
 static inline unsigned long
 __generic_copy_to_user_nocheck(void __user *to, const void *from,
 			       unsigned long n)
 {
-	return __copy_user(to,from,n);
+	return __copy_user(to, from, n);
 }
 
 static inline unsigned long
 __generic_clear_user_nocheck(void __user *to, unsigned long n)
 {
-	return __do_clear_user(to,n);
+	return __do_clear_user(to, n);
 }
 
 /* without checking */
 
-#define __copy_to_user(to,from,n)   __generic_copy_to_user_nocheck((to),(from),(n))
-#define __copy_from_user(to,from,n) __generic_copy_from_user_nocheck((to),(from),(n))
+#define __copy_to_user(to, from, n) \
+	__generic_copy_to_user_nocheck((to), (from), (n))
+#define __copy_from_user(to, from, n) \
+	__generic_copy_from_user_nocheck((to), (from), (n))
 #define __copy_to_user_inatomic __copy_to_user
 #define __copy_from_user_inatomic __copy_from_user
-#define __clear_user(to,n) __generic_clear_user_nocheck((to),(n))
+#define __clear_user(to, n) __generic_clear_user_nocheck((to), (n))
 
 #define strlen_user(str)	strnlen_user((str), 0x7ffffffe)
 

arch/cris/kernel/crisksyms.c

@@ -67,3 +67,4 @@ EXPORT_SYMBOL(schedule_usleep);
 #endif
 EXPORT_SYMBOL(csum_partial);
 EXPORT_SYMBOL(csum_partial_copy_from_user);
+EXPORT_SYMBOL(csum_partial_copy_nocheck);

arch/cris/mm/fault.c

@@ -219,6 +219,9 @@ do_page_fault(unsigned long address, struct pt_regs *regs,
 	/* User mode accesses just cause a SIGSEGV */
 
 	if (user_mode(regs)) {
+#ifdef CONFIG_NO_SEGFAULT_TERMINATION
+		DECLARE_WAIT_QUEUE_HEAD(wq);
+#endif
 		printk(KERN_NOTICE "%s (pid %d) segfaults for page "
 			"address %08lx at pc %08lx\n",
 			tsk->comm, tsk->pid,
@@ -229,7 +232,6 @@ do_page_fault(unsigned long address, struct pt_regs *regs,
 			show_registers(regs);
 
 #ifdef CONFIG_NO_SEGFAULT_TERMINATION
-		DECLARE_WAIT_QUEUE_HEAD(wq);
 		wait_event_interruptible(wq, 0 == 1);
 #else
 		info.si_signo = SIGSEGV;