X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=arch%2Farm%2Fkernel%2Ftraps.c;h=071772c42e9cf23d7af71c9efeb676a203e13542;hb=a4cb4b1277a499ebced7f7534d5cfb11a30eb224;hp=3f9b4e7073a7370e9caebcd573816a28dd966de0;hpb=15d5e883c4f1844e8c6ffc5cf8b1c7b2b74a6da9;p=pandora-kernel.git

diff --git a/arch/arm/kernel/traps.c b/arch/arm/kernel/traps.c
index 3f9b4e7073a7..071772c42e9c 100644
--- a/arch/arm/kernel/traps.c
+++ b/arch/arm/kernel/traps.c
@@ -37,12 +37,18 @@
 
 #include "signal.h"
 
-static const char *handler[]= { "prefetch abort", "data abort", "address exception", "interrupt" };
+static const char *handler[]= {
+	"prefetch abort",
+	"data abort",
+	"address exception",
+	"interrupt",
+	"undefined instruction",
+};
 
 void *vectors_page;
 
 #ifdef CONFIG_DEBUG_USER
-unsigned int user_debug;
+unsigned int user_debug = UDBG_SEGV_SHORT;
 
 static int __init user_debug_setup(char *str)
 {
@@ -466,14 +472,14 @@ static int bad_syscall(int n, struct pt_regs *regs)
 	return regs->ARM_r0;
 }
 
-static inline void
+static inline int
 do_cache_op(unsigned long start, unsigned long end, int flags)
 {
 	struct mm_struct *mm = current->active_mm;
 	struct vm_area_struct *vma;
 
 	if (end < start || flags)
-		return;
+		return -EINVAL;
 
 	down_read(&mm->mmap_sem);
 	vma = find_vma(mm, start);
@@ -484,10 +490,10 @@ do_cache_op(unsigned long start, unsigned long end, int flags)
 			end = vma->vm_end;
 
 		up_read(&mm->mmap_sem);
-		flush_cache_user_range(start, end);
-		return;
+		return flush_cache_user_range(start, end);
 	}
 	up_read(&mm->mmap_sem);
+	return -EINVAL;
 }
 
 /*
@@ -533,8 +539,7 @@ asmlinkage int arm_syscall(int no, struct pt_regs *regs)
 	 * the specified region).
 	 */
 	case NR(cacheflush):
-		do_cache_op(regs->ARM_r0, regs->ARM_r1, regs->ARM_r2);
-		return 0;
+		return do_cache_op(regs->ARM_r0, regs->ARM_r1, regs->ARM_r2);
 
 	case NR(usr26):
 		if (!(elf_hwcap & HWCAP_26BIT))