linux-kernel - [PATCH] x86/boot: fix cast to pointer compiler warning

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Date:   Wed, 8 Jan 2020 00:38:28 -0500
From:   Edwin Zimmerman <edwin@...mainstreet.net>
To:     x86@...nel.org, Matthew Garrett <mjg59@...gle.com>,
        linux-kernel@...r.kernel.org
Cc:     Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
        "H. Peter Anvin" <hpa@...or.com>,
        Chao Fan <fanc.fnst@...fujitsu.com>,
        Junichi Nomura <j-nomura@...jp.nec.com>,
        Erik Schmauss <erik.schmauss@...el.com>,
        Edwin Zimmerman <edwin@...mainstreet.net>,
        Zhenzhong Duan <zhenzhong.duan@...cle.com>,
        Josh Boyer <jwboyer@...hat.com>
Subject: [PATCH] x86/boot: fix cast to pointer compiler warning

Fix cast-to-pointer compiler warning

arch/x86/boot/compressed/acpi.c: In function ‘get_acpi_srat_table’:
arch/x86/boot/compressed/acpi.c:316:9: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]
rsdp = (struct acpi_table_rsdp *)get_cmdline_acpi_rsdp();
        ^
Fixes: 41fa1ee9c6d6 ("acpi: Ignore acpi_rsdp kernel param when the kernel has been locked down")
Signed-off-by: Edwin Zimmerman <edwin@...mainstreet.net>
---
arch/x86/boot/compressed/acpi.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/x86/boot/compressed/acpi.c b/arch/x86/boot/compressed/acpi.c
index 25019d42ae93..5d2568066d58 100644
--- a/arch/x86/boot/compressed/acpi.c
+++ b/arch/x86/boot/compressed/acpi.c
@@ -313,7 +313,7 @@ static unsigned long get_acpi_srat_table(void)
* stash this in boot params because the kernel itself may have
* different ideas about whether to trust a command-line parameter.
*/
- rsdp = (struct acpi_table_rsdp *)get_cmdline_acpi_rsdp();
+ rsdp = (struct acpi_table_rsdp *)(long)get_cmdline_acpi_rsdp();
if (!rsdp)
rsdp = (struct acpi_table_rsdp *)(long)

-- 
2.17.1