17d25ae7f1
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>
18 lines
338 B
C
18 lines
338 B
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _SKC_LINUX_PRINTK_H
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#define _SKC_LINUX_PRINTK_H
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#include <stdio.h>
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/* controllable printf */
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extern int pr_output;
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#define printk(fmt, ...) \
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(pr_output ? printf(fmt, ##__VA_ARGS__) : 0)
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#define pr_err printk
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#define pr_warn printk
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#define pr_info printk
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#define pr_debug printk
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#endif
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