Messages in this thread Patch in this message |  | | Date | Sat, 13 Feb 2021 14:41:59 +0000 | From | Chris Down <> | Subject | [PATCH] ia64: Depend on non-static printk for cmpxchg debug |
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With !CONFIG_PRINTK, printk() is static in the header, but ia64's cmpxchg.h with CONFIG_IA64_DEBUG_CMPXCHG doesn't take this into account before trying to use it as extern, resulting in a compiler error:
./include/linux/printk.h:219:5: error: static declaration of 'printk' follows non-static declaration 219 | int printk(const char *s, ...) | ^~~~~~ ./arch/ia64/include/uapi/asm/cmpxchg.h:142:14: note: previous declaration of 'printk' was here 142 | extern int printk(const char *fmt, ...); \ | ^~~~~~
Make CONFIG_IA64_DEBUG_CMPXCHG dependent on CONFIG_PRINTK to avoid this.
Signed-off-by: Chris Down <chris@chrisdown.name> Reported-by: kernel test robot <lkp@intel.com> Cc: Tony Luck <tony.luck@intel.com> Cc: Fenghua Yu <fenghua.yu@intel.com> Cc: linux-ia64@vger.kernel.org --- arch/ia64/Kconfig.debug | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/ia64/Kconfig.debug b/arch/ia64/Kconfig.debug index 40ca23bd228d..2ce008e2d164 100644 --- a/arch/ia64/Kconfig.debug +++ b/arch/ia64/Kconfig.debug @@ -39,7 +39,7 @@ config DISABLE_VHPT config IA64_DEBUG_CMPXCHG bool "Turn on compare-and-exchange bug checking (slow!)" - depends on DEBUG_KERNEL + depends on DEBUG_KERNEL && PRINTK help Selecting this option turns on bug checking for the IA-64 compare-and-exchange instructions. This is slow! Itaniums -- 2.30.1
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