[PATCH 3/5 -v2] Remove __pa() use in hvc_lguest

[Steven Rostedt <rostedt@goodmis.org>]

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The hvc_lguest uses __pa in the const initialization.
In some architectures, __pa() is not constant so this fails in compiles.

Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
---
 drivers/char/hvc_lguest.c |    8 +++++++-
 1 files changed, 7 insertions(+), 1 deletions(-)

diff --git a/drivers/char/hvc_lguest.c b/drivers/char/hvc_lguest.c
index feeccba..c7d7d4c 100644
--- a/drivers/char/hvc_lguest.c
+++ b/drivers/char/hvc_lguest.c
@@ -42,7 +42,6 @@
  * use of physical address for the buffer itself. */
 static char inbuf[256];
 static struct lguest_dma cons_input = { .used_len = 0,
-					.addr[0] = __pa(inbuf),
 					.len[0] = sizeof(inbuf),
 					.len[1] = 0 };
 
@@ -114,6 +113,13 @@ static struct hv_ops lguest_cons = {
  * (0), and the struct hv_ops containing the put_chars() function. */
 static int __init cons_init(void)
 {
+	/*
+	 * We can't initialize using __pa in const declarations,
+	 * since __pa(inbuf) does not evaluate into a constant on
+	 * all architectures (namely x86_64).
+	 */
+	cons_input.addr[0] = __pa(inbuf);
+
 	if (strcmp(paravirt_ops.name, "lguest") != 0)
 		return 0;
 
-- 
1.4.4.4

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