[PATCH 1/3] spi: dw_spi: fix a bug in wait_till_not_busy()

[PATCH 1/3] spi: dw_spi: fix a bug in wait_till_not_busy()

[Feng Tang]

>From 124fda393891d31debc2a3b760627edb18422203 Mon Sep 17 00:00:00 2001
From: Feng Tang <feng.tang-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
Date: Fri, 25 Dec 2009 11:18:32 +0800
Subject: [PATCH 1/3] spi: dw_spi: fix a bug in wait_till_not_busy()

Make the driver wait at least  for 1 jiffie before issuing the
warning, no matter what HZ is set to

Signed-off-by: Feng Tang <feng.tang-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
---
 drivers/spi/dw_spi.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/drivers/spi/dw_spi.c b/drivers/spi/dw_spi.c
index 31620fa..521d680 100644
--- a/drivers/spi/dw_spi.c
+++ b/drivers/spi/dw_spi.c
@@ -161,7 +161,7 @@ static inline void mrst_spi_debugfs_remove(struct dw_spi *dws)
 
 static void wait_till_not_busy(struct dw_spi *dws)
 {
-	unsigned long end = jiffies + usecs_to_jiffies(1000);
+	unsigned long end = jiffies + 1 + usecs_to_jiffies(1000);
 
 	while (time_before(jiffies, end)) {
 		if (!(dw_readw(dws, sr) & SR_BUSY))
-- 
1.6.0.4

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