linux-kernel - [PATCH 5.1 19/54] x86/efi: fix a -Wtype-limits compilation warning

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Message-Id: <20190718030054.892867977@linuxfoundation.org>
Date:   Thu, 18 Jul 2019 12:01:14 +0900
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Qian Cai <cai@....pw>,
        "Prakhya, Sai Praneeth" <sai.praneeth.prakhya@...el.com>,
        Ard Biesheuvel <ard.biesheuvel@...aro.org>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.1 19/54] x86/efi: fix a -Wtype-limits compilation warning

[ Upstream commit 919aef44d73d5d0c04213cb1bc31149cc074e65e ]

Compiling a kernel with W=1 generates this warning,

arch/x86/platform/efi/quirks.c:731:16: warning: comparison of unsigned
expression >= 0 is always true [-Wtype-limits]

Fixes: 3425d934fc03 ("efi/x86: Handle page faults occurring while running ...")
Signed-off-by: Qian Cai <cai@....pw>
Acked-by: "Prakhya, Sai Praneeth" <sai.praneeth.prakhya@...el.com>
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@...aro.org>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 arch/x86/platform/efi/quirks.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/x86/platform/efi/quirks.c b/arch/x86/platform/efi/quirks.c
index a25a9fd987a9..529522c62d89 100644
--- a/arch/x86/platform/efi/quirks.c
+++ b/arch/x86/platform/efi/quirks.c
@@ -724,7 +724,7 @@ void efi_recover_from_page_fault(unsigned long phys_addr)
 	 * Address range 0x0000 - 0x0fff is always mapped in the efi_pgd, so
 	 * page faulting on these addresses isn't expected.
 	 */
-	if (phys_addr >= 0x0000 && phys_addr <= 0x0fff)
+	if (phys_addr <= 0x0fff)
 		return;
 
 	/*
-- 
2.20.1