From: Roel Kluin <roel.kluin@gmail.com>
Date: Thu, 16 Apr 2009 20:49:17 +0000 (+0200)
Subject: microblaze: iowrite upon timeout
X-Git-Tag: firefly_0821_release~14340^2~6
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=6e60c14810d8da792e418fdcb2110b4185d1b9a2;p=firefly-linux-kernel-4.4.55.git

microblaze: iowrite upon timeout

retries reaches -1, so the iowrite occurrs upon timeout.

Acked-by: John Williams <john.williams@petalogix.com>
Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Signed-off-by: Michal Simek <monstr@monstr.eu>
---

diff --git a/arch/microblaze/kernel/early_printk.c b/arch/microblaze/kernel/early_printk.c
index 62cc78993f44..4b0f0fdb9ca0 100644
--- a/arch/microblaze/kernel/early_printk.c
+++ b/arch/microblaze/kernel/early_printk.c
@@ -36,7 +36,7 @@ static void early_printk_putc(char c)
 
 	unsigned retries = 10000;
 	/* read status bit - 0x8 offset */
-	while (retries-- && (in_be32(base_addr + 8) & (1 << 3)))
+	while (--retries && (in_be32(base_addr + 8) & (1 << 3)))
 		;
 
 	/* Only attempt the iowrite if we didn't timeout */