linux-mips-commits

[James S. <jsi...@us...>]

Update of /cvsroot/linux-mips/linux/arch/mips64/kernel
In directory usw-pr-cvs1:/tmp/cvs-serv24711/arch/mips64/kernel

Modified Files:
	process.c 
Added Files:
	ptrace.c 
Log Message:
Don't set CU1 bit if we don't have an FPU.  Some b0rken silicon doesn't like it at all.


Index: process.c
===================================================================
RCS file: /cvsroot/linux-mips/linux/arch/mips64/kernel/process.c,v
retrieving revision 1.3
retrieving revision 1.4
diff -u -d -r1.3 -r1.4
--- process.c	2001/10/27 17:28:54	1.3
+++ process.c	2001/10/31 17:28:54	1.4
@@ -53,7 +53,7 @@
 {
 	/* Forget lazy fpu state */
 	if (IS_FPU_OWNER()) {
-		set_cp0_status(ST0_CU1);
+		__enable_fpu();
 		__asm__ __volatile__("cfc1\t$0,$31");
 		CLEAR_FPU_OWNER();
 	}
@@ -63,7 +63,7 @@
 {
 	/* Forget lazy fpu state */
 	if (IS_FPU_OWNER()) {
-		set_cp0_status(ST0_CU1);
+		__enable_fpu();
 		__asm__ __volatile__("cfc1\t$0,$31");
 		CLEAR_FPU_OWNER();
 	}
@@ -123,10 +123,11 @@
 	/* We actually store the FPU info in the task->thread
 	 * area.
 	 */
-	if(regs->cp0_status & ST0_CU1) {
+	if (regs->cp0_status & ST0_CU1) {
 		memcpy(r, &current->thread.fpu, sizeof(current->thread.fpu));
 		return 1;
 	}
+
 	return 0; /* Task didn't use the fpu at all. */
 }