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-rw-r--r--meta-rcar-gen3-adas/recipes-kernel/linux/linux-renesas/0001-spi-sh-msiof-fixes.patch33
1 files changed, 33 insertions, 0 deletions
diff --git a/meta-rcar-gen3-adas/recipes-kernel/linux/linux-renesas/0001-spi-sh-msiof-fixes.patch b/meta-rcar-gen3-adas/recipes-kernel/linux/linux-renesas/0001-spi-sh-msiof-fixes.patch
new file mode 100644
index 0000000..d8806ba
--- /dev/null
+++ b/meta-rcar-gen3-adas/recipes-kernel/linux/linux-renesas/0001-spi-sh-msiof-fixes.patch
@@ -0,0 +1,33 @@
+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
+