From: Su Hui <suhui@nfschina.com>
Date: Thu, 31 Aug 2023 07:34:56 +0000 (+0800)
Subject: ACPI: OSL: add __printf format attribute to acpi_os_vprintf()
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=83f5ad58daf1576640bec3aa2f81f003f8e6c48b;p=linux.git

ACPI: OSL: add __printf format attribute to acpi_os_vprintf()

With gcc and W=1 option to compile the kernel, warning occurs:

drivers/acpi/osl.c:156:2: error:
function ‘acpi_os_vprintf’ might be a candidate for ‘gnu_printf’
format attribute [-Werror=suggest-attribute=format].

Allow the compiler to recognize and check format strings is safer.

Signed-off-by: Su Hui <suhui@nfschina.com>
[ rjw: Subject and changelog edits ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
---

diff --git a/drivers/acpi/osl.c b/drivers/acpi/osl.c
index f725813d0cce6..357f1325485db 100644
--- a/drivers/acpi/osl.c
+++ b/drivers/acpi/osl.c
@@ -149,7 +149,7 @@ void acpi_os_printf(const char *fmt, ...)
 }
 EXPORT_SYMBOL(acpi_os_printf);
 
-void acpi_os_vprintf(const char *fmt, va_list args)
+void __printf(1, 0) acpi_os_vprintf(const char *fmt, va_list args)
 {
 	static char buffer[512];