[PATCH 09/15] tty: hvc: remove unexplained "just in case" spin delay

[Nicholas Piggin <npiggin@gmail.com>]

This delay was in the very first OPAL console commit 6.5 years ago,
and came from the vio hvc driver. The firmware console has hardened
sufficiently to remove it.

Reviewed-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
---
 drivers/tty/hvc/hvc_opal.c | 8 +-------
 1 file changed, 1 insertion(+), 7 deletions(-)

diff --git a/drivers/tty/hvc/hvc_opal.c b/drivers/tty/hvc/hvc_opal.c
index 0a72f98ee082..786e76a1e06d 100644
--- a/drivers/tty/hvc/hvc_opal.c
+++ b/drivers/tty/hvc/hvc_opal.c
@@ -313,14 +313,8 @@ static int udbg_opal_getc(void)
 	int ch;
 	for (;;) {
 		ch = udbg_opal_getc_poll();
-		if (ch == -1) {
-			/* This shouldn't be needed...but... */
-			volatile unsigned long delay;
-			for (delay=0; delay < 2000000; delay++)
-				;
-		} else {
+		if (ch != -1)
 			return ch;
-		}
 	}
 }
 
-- 
2.17.0