From: Daniel Thompson <daniel.thompson@linaro.org>
Date: Tue, 23 Sep 2014 07:31:30 +0000 (+0100)
Subject: serial: asc: Conditionally use readl_relaxed (COMPILE_TEST)
X-Git-Tag: firefly_0821_release~176^2~3120^2~4
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=daea65a7be76953bb80d13d0ac43e7441fd42cdf;p=firefly-linux-kernel-4.4.55.git

serial: asc: Conditionally use readl_relaxed (COMPILE_TEST)

Commit 08177ece596c ("serial: asc: Adopt readl_/writel_relaxed()) is
regressing the m68k allmodconfig build. This is due to the unconditional
use of readl_relaxed() which, although documented, does not currently
exist for m68k.

This is trivially fixable for st-asc because we can just update the
asc_in() accessor to make this conditional.

Reported-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Daniel Thompson <daniel.thompson@linaro.org>
Cc: Srinivas Kandagatla <srinivas.kandagatla@gmail.com>
Cc: Maxime Coquelin <maxime.coquelin@st.com>
Cc: Patrice Chotard <patrice.chotard@st.com>
Cc: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/tty/serial/st-asc.c b/drivers/tty/serial/st-asc.c
index a3fc1678d2b9..a3165842ca29 100644
--- a/drivers/tty/serial/st-asc.c
+++ b/drivers/tty/serial/st-asc.c
@@ -151,7 +151,11 @@ static inline struct asc_port *to_asc_port(struct uart_port *port)
 
 static inline u32 asc_in(struct uart_port *port, u32 offset)
 {
+#ifdef readl_relaxed
 	return readl_relaxed(port->membase + offset);
+#else
+	return readl(port->membase + offset);
+#endif
 }
 
 static inline void asc_out(struct uart_port *port, u32 offset, u32 value)