From: Linus Walleij <linus.walleij@linaro.org>
Date: Mon, 11 Apr 2016 11:51:03 +0000 (+0200)
Subject: spi: let SPI masters ignore their children for PM
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=d7e2ee257038baeb03baef602500368a51ee9eef;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git

spi: let SPI masters ignore their children for PM

Let all SPI masters ignore their children: when it comes
to power management: SPI children have no business doing
keeping their parents awake: they are completely autonomous
devices that just use their parent to talk, and the latter
usecase must be power managed by the host itself on a
per-message basis.

Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
---

diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c
index de2f2f90d799..6c4c050e6b65 100644
--- a/drivers/spi/spi.c
+++ b/drivers/spi/spi.c
@@ -1764,6 +1764,7 @@ struct spi_master *spi_alloc_master(struct device *dev, unsigned size)
 	master->num_chipselect = 1;
 	master->dev.class = &spi_master_class;
 	master->dev.parent = dev;
+	pm_suspend_ignore_children(&master->dev, true);
 	spi_master_set_devdata(master, &master[1]);
 
 	return master;