aboutsummaryrefslogtreecommitdiffstats
path: root/meta-rcar-gen3-adas/recipes-kernel/linux/linux-renesas/0001-spi-sh-msiof-fixes.patch
blob: d8806ba2e4746bd968a4522542b9d52f3b298702 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
From 32db8cc989d7dfdf0315d286b06234e008e56d7c Mon Sep 17 00:00:00 2001
From: Vladimir Barinov <vladimir.barinov@cogentembedded.com>
Date: Sun, 15 May 2016 21:53:13 +0300
Subject: [PATCH] spi: sh-msiof: fixes

speed up polling of CTR register

Signed-off-by: Vladimir Barinov <vladimir.barinov@cogentembedded.com>
---
 drivers/spi/spi-sh-msiof.c | 30 ++++++++++++++++++++----------
 1 file changed, 20 insertions(+), 10 deletions(-)

diff --git a/drivers/spi/spi-sh-msiof.c b/drivers/spi/spi-sh-msiof.c
index d096f5a..6817304 100644
--- a/drivers/spi/spi-sh-msiof.c
+++ b/drivers/spi/spi-sh-msiof.c
@@ -228,11 +228,11 @@ static int sh_msiof_modify_ctr_wait(struct sh_msiof_spi_priv *p,
 	data |= set;
 	sh_msiof_write(p, CTR, data);
 
-	for (k = 100; k > 0; k--) {
+	for (k = 1000; k > 0; k--) {
 		if ((sh_msiof_read(p, CTR) & mask) == set)
 			break;
 
-		udelay(10);
+		udelay(1);
 	}
 
 	return k > 0 ? 0 : -ETIMEDOUT;
-- 
1.9.1