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tools/bootconfig: Fix wrong __VA_ARGS__ usage

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Since printk() wrapper macro uses __VA_ARGS__ without "##" prefix, it causes
a build error if there is no variable arguments (e.g. only fmt is
specified.) To fix this error, use ##__VA_ARGS__ instead of __VAR_ARGS__.

Link: http://lkml.kernel.org/r/158108370130.2758.10893830923800978011.stgit@devnote2

Fixes: 950313ebf7 ("tools: bootconfig: Add bootconfig command")
Reported-by: Michael Ellerman <mpe@ellerman.id.au>
Tested-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
This commit is contained in:
Masami Hiramatsu 2020-02-07 22:55:01 +09:00 committed by Steven Rostedt (VMware)
parent a00574036c
commit 17d25ae7f1
1 changed files with 1 additions and 1 deletions
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2
tools/bootconfig/include/linux/printk.h
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@ -7,7 +7,7 @@
/* controllable printf */
extern int pr_output;
#define printk(fmt, ...) \
(pr_output ? printf(fmt, __VA_ARGS__) : 0)
(pr_output ? printf(fmt, ##__VA_ARGS__) : 0)
#define pr_err printk
#define pr_warn printk