This is a note to let you know that I've just added the patch titled
spi: sh-msiof: Add runtime PM lock in initializing
to the 3.18-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
spi-sh-msiof-add-runtime-pm-lock-in-initializing.patch
and it can be found in the queue-3.18 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 015760563ec77bf17cec712fa94afdf53b285287 Mon Sep 17 00:00:00 2001
From: Hisashi Nakamura <hisashi.nakamura.ak@xxxxxxxxxxx>
Date: Mon, 15 Dec 2014 23:01:11 +0900
Subject: spi: sh-msiof: Add runtime PM lock in initializing
From: Hisashi Nakamura <hisashi.nakamura.ak@xxxxxxxxxxx>
commit 015760563ec77bf17cec712fa94afdf53b285287 upstream.
SH-MSIOF driver is enabled autosuspend API of spi framework.
But autosuspend framework doesn't work during initializing.
So runtime PM lock is added in SH-MSIOF driver initializing.
Fixes: e2a0ba547ba31c (spi: sh-msiof: Convert to spi core auto_runtime_pm framework)
Signed-off-by: Hisashi Nakamura <hisashi.nakamura.ak@xxxxxxxxxxx>
Signed-off-by: Yoshihiro Kaneko <ykaneko0929@xxxxxxxxx>
Signed-off-by: Mark Brown <broonie@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/spi/spi-sh-msiof.c | 5 +++++
1 file changed, 5 insertions(+)
--- a/drivers/spi/spi-sh-msiof.c
+++ b/drivers/spi/spi-sh-msiof.c
@@ -480,6 +480,8 @@ static int sh_msiof_spi_setup(struct spi
struct device_node *np = spi->master->dev.of_node;
struct sh_msiof_spi_priv *p = spi_master_get_devdata(spi->master);
+ pm_runtime_get_sync(&p->pdev->dev);
+
if (!np) {
/*
* Use spi->controller_data for CS (same strategy as spi_gpio),
@@ -498,6 +500,9 @@ static int sh_msiof_spi_setup(struct spi
if (spi->cs_gpio >= 0)
gpio_set_value(spi->cs_gpio, !(spi->mode & SPI_CS_HIGH));
+
+ pm_runtime_put_sync(&p->pdev->dev);
+
return 0;
}
Patches currently in stable-queue which might be from hisashi.nakamura.ak@xxxxxxxxxxx are
queue-3.18/spi-sh-msiof-add-runtime-pm-lock-in-initializing.patch
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