[PATCH 3.18 141/150] spi: sh-msiof: Add runtime PM lock in initializing

Greg Kroah-Hartman
2015-01-14T07:31:57Z

From: Hisashi Nakamura <hisashi.nakamura.ak@renesas.com>

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@renesas.com>
Signed-off-by: Yoshihiro Kaneko <ykaneko0929@gmail.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
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;
}