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From: "Michael S. Tsirkin" <mst@redhat.com>
To: linux-kernel@vger.kernel.org
Cc: Arnd Bergmann <arnd@arndb.de>,
	linux-arch@vger.kernel.org, Tony Luck <tony.luck@intel.com>,
	Fenghua Yu <fenghua.yu@intel.com>,
	linux-ia64@vger.kernel.org
Subject: [PATCH 07/18] ia64/uaccess: fix sparse errors
Date: Sun, 14 Dec 2014 18:52:27 +0200	[thread overview]
Message-ID: <1418575877-21488-8-git-send-email-mst@redhat.com> (raw)
In-Reply-To: <1418575877-21488-1-git-send-email-mst@redhat.com>

virtio wants to read bitwise types from userspace using get_user.  At the
moment this triggers sparse errors, since the value is passed through an
integer.

Fix that up using __force.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
---
 arch/ia64/include/asm/uaccess.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/ia64/include/asm/uaccess.h b/arch/ia64/include/asm/uaccess.h
index 449c8c0..d818ae4 100644
--- a/arch/ia64/include/asm/uaccess.h
+++ b/arch/ia64/include/asm/uaccess.h
@@ -197,7 +197,7 @@ extern void __get_user_unknown (void);
 		      case 8: __get_user_size(__gu_val, __gu_ptr, 8, __gu_err); break;	\
 		      default: __get_user_unknown(); break;				\
 		}									\
-	(x) = (__typeof__(*(__gu_ptr))) __gu_val;					\
+	(x) = (__force __typeof__(*(__gu_ptr))) __gu_val;					\
 	__gu_err;									\
 })
 
-- 
MST


  parent reply	other threads:[~2014-12-14 16:52 UTC|newest]

Thread overview: 58+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-12-14 16:51 [PATCH 00/18] uaccess: fix sparse warning on get_user for bitwise types Michael S. Tsirkin
2014-12-14 16:51 ` [PATCH 01/18] x86/uaccess: fix sparse errors Michael S. Tsirkin
2014-12-14 16:51   ` Michael S. Tsirkin
2014-12-16 16:47   ` Michael S. Tsirkin
2014-12-14 16:52 ` [PATCH 02/18] alpha/uaccess: " Michael S. Tsirkin
2014-12-14 16:52 ` [PATCH 03/18] arm64/uaccess: " Michael S. Tsirkin
2014-12-15 11:17   ` Will Deacon
2014-12-15 11:23     ` Russell King - ARM Linux
2014-12-15 11:29       ` Michael S. Tsirkin
2014-12-15 12:54       ` Michael S. Tsirkin
2014-12-14 16:52 ` [PATCH 04/18] avr32/uaccess: " Michael S. Tsirkin
2014-12-14 16:52   ` Michael S. Tsirkin
2014-12-14 20:35   ` Hans-Christian Egtvedt
2014-12-14 16:52 ` [PATCH 05/18] blackfin/uaccess: " Michael S. Tsirkin
2014-12-14 16:52   ` Michael S. Tsirkin
2014-12-18  3:11   ` Steven Miao
2014-12-14 16:52 ` [PATCH 06/18] cris/uaccess: " Michael S. Tsirkin
2014-12-14 16:52   ` Michael S. Tsirkin
2014-12-14 16:52 ` Michael S. Tsirkin [this message]
2014-12-14 16:52   ` [PATCH 07/18] ia64/uaccess: " Michael S. Tsirkin
2014-12-14 16:52 ` [PATCH 08/18] m32r/uaccess: " Michael S. Tsirkin
2014-12-14 16:52 ` [PATCH 09/18] metag/uaccess: " Michael S. Tsirkin
2014-12-14 16:52   ` Michael S. Tsirkin
2014-12-14 16:52 ` [PATCH 10/18] microblaze/uaccess: " Michael S. Tsirkin
2014-12-14 16:52   ` Michael S. Tsirkin
2014-12-14 16:52 ` [PATCH 11/18] openrisc/uaccess: " Michael S. Tsirkin
2014-12-14 16:52   ` Michael S. Tsirkin
2014-12-14 16:52 ` [PATCH 12/18] parisc/uaccess: " Michael S. Tsirkin
2014-12-14 16:52 ` [PATCH 13/18] powerpc/uaccess: " Michael S. Tsirkin
2014-12-14 16:52   ` Michael S. Tsirkin
2014-12-15  0:05   ` Benjamin Herrenschmidt
2014-12-15  1:37     ` Benjamin Herrenschmidt
2014-12-16 16:47   ` Michael S. Tsirkin
2014-12-16 23:50     ` Michael Ellerman
2014-12-17  0:52     ` Benjamin Herrenschmidt
2014-12-17 10:53       ` Arnd Bergmann
2014-12-17 11:05         ` Benjamin Herrenschmidt
2014-12-14 16:52 ` [PATCH 14/18] sh/uaccess: " Michael S. Tsirkin
2014-12-14 16:52   ` Michael S. Tsirkin
2014-12-14 16:52 ` [PATCH 15/18] sparc/uaccess: " Michael S. Tsirkin
2014-12-14 16:52   ` Michael S. Tsirkin
2014-12-14 16:53 ` [PATCH 16/18] " Michael S. Tsirkin
2014-12-14 16:53   ` Michael S. Tsirkin
2014-12-14 16:53 ` [PATCH 17/18] xtensa/uaccess: " Michael S. Tsirkin
2014-12-14 16:53   ` Michael S. Tsirkin
2014-12-14 16:53 ` [PATCH 18/18] m68k/uaccess: " Michael S. Tsirkin
2014-12-14 16:53   ` Michael S. Tsirkin
2014-12-15  0:40 ` [PATCH 00/18] uaccess: fix sparse warning on get_user for bitwise types Michael Ellerman
2014-12-15 10:22   ` Michael S. Tsirkin
2014-12-15 10:22     ` Michael S. Tsirkin
2014-12-16 23:49     ` Michael Ellerman
2014-12-15 10:03 ` LF.Tan
2014-12-15 10:17   ` Michael S. Tsirkin
2014-12-16  6:06     ` Ley Foon Tan
2014-12-16  6:57       ` Michael S. Tsirkin
2014-12-16 16:45       ` Michael S. Tsirkin
2014-12-18  6:54         ` Ley Foon Tan
2014-12-18  6:54           ` Ley Foon Tan

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