linux-kernel - [PATCH] init/calibrate.c - provide proper prototype.

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Date:   Tue, 29 Jan 2019 03:35:38 -0500
From:   valdis.kletnieks@...edu
To:     Andrew Morton <akpm@...ux-foundation.org>
cc:     linux-kernel@...r.kernel.org
Subject: [PATCH] init/calibrate.c - provide proper prototype.

Sparse issues a warning:

  CHECK   init/calibrate.c
init/calibrate.c:271:28: warning: symbol 'calibration_delay_done' was not declared. Should it be static?

The actual issue is that it's a __weak symbol that archs can override (in fact,
ARM does so), but no prototype is provided. Let's provide one to prevent
surprises.

Signed-off-by: Valdis Kletnieks <valdis.kletnieks@...edu>

diff --git a/include/linux/delay.h b/include/linux/delay.h
index b78bab4395d8..8e6828094c1e 100644
--- a/include/linux/delay.h
+++ b/include/linux/delay.h
@@ -55,6 +55,7 @@ static inline void ndelay(unsigned long x)

 extern unsigned long lpj_fine;
 void calibrate_delay(void);
+void __attribute__((weak)) calibration_delay_done(void);
 void msleep(unsigned int msecs);
 unsigned long msleep_interruptible(unsigned int msecs);
 void usleep_range(unsigned long min, unsigned long max);