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From: Wang YanQing <udknight@gmail.com>
To: mingo@kernel.org
Cc: yinghai@kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH] x86:aperture_64: drop not needed checking
Date: Tue, 16 Apr 2013 09:37:34 +0800	[thread overview]
Message-ID: <20130416013734.GA14641@udknight> (raw)


The memblock_find_in_range return value, addr, will
make sure "addr + aper_size" not beyond GART_MAX_ADDR.

Signed-off-by: Wang YanQing <udknight@gmail.com>
---
 arch/x86/kernel/aperture_64.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/x86/kernel/aperture_64.c b/arch/x86/kernel/aperture_64.c
index d5fd66f..fd972a3 100644
--- a/arch/x86/kernel/aperture_64.c
+++ b/arch/x86/kernel/aperture_64.c
@@ -87,7 +87,7 @@ static u32 __init allocate_aperture(void)
 	 */
 	addr = memblock_find_in_range(GART_MIN_ADDR, GART_MAX_ADDR,
 				      aper_size, aper_size);
-	if (!addr || addr + aper_size > GART_MAX_ADDR) {
+	if (!addr) {
 		printk(KERN_ERR
 			"Cannot allocate aperture memory hole (%lx,%uK)\n",
 				addr, aper_size>>10);
-- 
1.7.12.4.dirty

             reply	other threads:[~2013-04-16  1:37 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-04-16  1:37 Wang YanQing [this message]
2013-04-16 13:50 ` [tip:x86/mm] x86/mm/gart: Drop unnecessary check tip-bot for Wang YanQing

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