From: Dan Carpenter <dan.carpenter@oracle.com>
Date: Wed, 3 Jul 2013 22:04:54 +0000 (-0700)
Subject: err.h: IS_ERR() can accept __user pointers
X-Git-Tag: omap-for-v3.11/fixes-for-merge-window~17^2~262
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=e7152b97f38f1f5b915c719e6a3040697a700a16;p=pandora-kernel.git

err.h: IS_ERR() can accept __user pointers

Sparse generates a false positive when you pass a __user or __iomem
pointer to the IS_ERR() functions.

  drivers/rtc/rtc-ds1286.c:344:36: sparse: incorrect type in argument 1 (different address spaces)
  drivers/rtc/rtc-ds1286.c:344:36:    expected void const *ptr
  drivers/rtc/rtc-ds1286.c:344:36:    got unsigned int [noderef] [usertype] <asn:2>*rtcregs

We can silence these by adding a __force here and upgrading to Sparse
v0.4.5-rc1 or later.

This change has no effect when using current Sparse releases.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Christopher Li <sparse@chrisli.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

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