Commit 9f482807 authored Aug 18, 2008 by Ingo Molnar

x86, fpu: check __clear_user() return value



fix warning:

  arch/x86/kernel/xsave.c: In function ‘save_i387_xstate’:
  arch/x86/kernel/xsave.c:98: warning: ignoring return value of ‘__clear_user’, declared with attribute warn_unused_result

check the return value and act on it. We should not be ignoring faults
at this point.

Signed-off-by: Ingo Molnar <mingo@elte.hu>

parent 620f2efc

arch/x86/kernel/xsave.c

+3 −1

Original line number	Diff line number	Diff line
		@@ -95,7 +95,9 @@ int save_i387_xstate(void __user *buf)
		* Start with clearing the user buffer. This will present a
		* clean context for the bytes not touched by the fxsave/xsave.
		*/
		__clear_user(buf, sig_xstate_size);
		err = __clear_user(buf, sig_xstate_size);
		if (err)
		return err;

		if (task_thread_info(tsk)->status & TS_XSAVE)
		err = xsave_user(buf);