[SPARC]: Don't zero out tail during copy_from_user_inatomic().



Actually, since we use the same code for all the copying
types in and out of userspace, we check at runtime whether
preemption is disabled.

Signed-off-by: David S. Miller <davem@davemloft.net>

parent d6c64102

arch/sparc/lib/copy_user.S

+4 −0

Original line number	Diff line number	Diff line
		@@ -14,6 +14,7 @@
		#include <asm/ptrace.h>
		#include <asm/asmmacro.h>
		#include <asm/page.h>
		#include <asm/thread_info.h>

		/* Work around cpp -rob */
		#define ALLOC #alloc
		@@ -366,6 +367,9 @@ fixupretl:
		blu 1f
		cmp %o1, %g1
		bgeu 1f
		ld [%g6 + TI_PREEMPT], %g1
		cmp %g1, 0
		bne 1f
		nop
		save %sp, -64, %sp
		mov %i0, %o0