[tip:x86/debug] x86/fpu/xsave: Keep __user annotation in casts
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Message ID tip-5c7d03e99cb1ed449328ed9fba0c632944d39e7e@git.kernel.org
State New, archived
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  • [tip:x86/debug] x86/fpu/xsave: Keep __user annotation in casts
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Commit Message

Mathias Krause Sept. 5, 2012, 10:58 a.m. UTC
Commit-ID:  5c7d03e99cb1ed449328ed9fba0c632944d39e7e
Gitweb:     http://git.kernel.org/tip/5c7d03e99cb1ed449328ed9fba0c632944d39e7e
Author:     Mathias Krause <minipli@googlemail.com>
AuthorDate: Sun, 2 Sep 2012 23:31:44 +0200
Committer:  Ingo Molnar <mingo@kernel.org>
CommitDate: Wed, 5 Sep 2012 10:52:25 +0200

x86/fpu/xsave: Keep __user annotation in casts

Don't remove the __user annotation of the fpstate pointer, but
drop the superfluous void * cast instead.

This fixes the following sparse warnings:

  xsave.c:135:15: warning: cast removes address space of expression
  xsave.c:135:15: warning: incorrect type in argument 1 (different address spaces)
  xsave.c:135:15:    expected void const volatile [noderef] <asn:1>*<noident>
  [...]

Signed-off-by: Mathias Krause <minipli@googlemail.com>
Cc: Suresh Siddha <suresh.b.siddha@intel.com>
Link: http://lkml.kernel.org/r/1346621506-30857-6-git-send-email-minipli@googlemail.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
---
 arch/x86/kernel/xsave.c |    6 +++---
 1 files changed, 3 insertions(+), 3 deletions(-)

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Patch
diff mbox series

diff --git a/arch/x86/kernel/xsave.c b/arch/x86/kernel/xsave.c
index 3d3e207..9e1a8a7 100644
--- a/arch/x86/kernel/xsave.c
+++ b/arch/x86/kernel/xsave.c
@@ -132,9 +132,9 @@  int check_for_xstate(struct i387_fxsave_struct __user *buf,
 	    fx_sw_user->xstate_size > fx_sw_user->extended_size)
 		return -EINVAL;
 
-	err = __get_user(magic2, (__u32 *) (((void *)fpstate) +
-					    fx_sw_user->extended_size -
-					    FP_XSTATE_MAGIC2_SIZE));
+	err = __get_user(magic2, (__u32 __user *) (fpstate +
+						   fx_sw_user->extended_size -
+						   FP_XSTATE_MAGIC2_SIZE));
 	if (err)
 		return err;
 	/*