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authorDmitry Osipenko <digetx@gmail.com>2018-08-02 13:11:43 +0200
committerLinus Walleij <linus.walleij@linaro.org>2018-08-03 19:17:39 +0200
commit1e0813ee5599932c856bda64a568895ed7a33d3a (patch)
tree7af062c439058bc020f867aefb90a741197c73a9 /drivers/pinctrl/tegra
parentpinctrl: baytrail: actually print the apparently misconfigured pin (diff)
downloadlinux-1e0813ee5599932c856bda64a568895ed7a33d3a.tar.xz
linux-1e0813ee5599932c856bda64a568895ed7a33d3a.zip
pinctrl: tegra: Move drivers registration to arch_init level
There is a bug in regards to deferred probing within the drivers core that causes GPIO-driver to suspend after its users. The bug appears if GPIO-driver probe is getting deferred, which happens after introducing dependency on PINCTRL-driver for the GPIO-driver by defining "gpio-ranges" property in device-tree. The bug in the drivers core is old (more than 4 years now) and is well known, unfortunately there is no easy fix for it. The good news is that we can workaround the deferred probe issue by changing GPIO / PINCTRL drivers registration order and hence by moving PINCTRL driver registration to the arch_init level and GPIO to the subsys_init. Signed-off-by: Dmitry Osipenko <digetx@gmail.com> Acked-by: Stefan Agner <stefan@agner.ch> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'drivers/pinctrl/tegra')
-rw-r--r--drivers/pinctrl/tegra/pinctrl-tegra114.c7
-rw-r--r--drivers/pinctrl/tegra/pinctrl-tegra124.c7
-rw-r--r--drivers/pinctrl/tegra/pinctrl-tegra20.c7
-rw-r--r--drivers/pinctrl/tegra/pinctrl-tegra210.c7
-rw-r--r--drivers/pinctrl/tegra/pinctrl-tegra30.c7
5 files changed, 30 insertions, 5 deletions
diff --git a/drivers/pinctrl/tegra/pinctrl-tegra114.c b/drivers/pinctrl/tegra/pinctrl-tegra114.c
index 511a8774fd8d..d43c209e9c30 100644
--- a/drivers/pinctrl/tegra/pinctrl-tegra114.c
+++ b/drivers/pinctrl/tegra/pinctrl-tegra114.c
@@ -1868,4 +1868,9 @@ static struct platform_driver tegra114_pinctrl_driver = {
},
.probe = tegra114_pinctrl_probe,
};
-builtin_platform_driver(tegra114_pinctrl_driver);
+
+static int __init tegra114_pinctrl_init(void)
+{
+ return platform_driver_register(&tegra114_pinctrl_driver);
+}
+arch_initcall(tegra114_pinctrl_init);
diff --git a/drivers/pinctrl/tegra/pinctrl-tegra124.c b/drivers/pinctrl/tegra/pinctrl-tegra124.c
index 57e3cdcf4503..5b07a5834d15 100644
--- a/drivers/pinctrl/tegra/pinctrl-tegra124.c
+++ b/drivers/pinctrl/tegra/pinctrl-tegra124.c
@@ -2080,4 +2080,9 @@ static struct platform_driver tegra124_pinctrl_driver = {
},
.probe = tegra124_pinctrl_probe,
};
-builtin_platform_driver(tegra124_pinctrl_driver);
+
+static int __init tegra124_pinctrl_init(void)
+{
+ return platform_driver_register(&tegra124_pinctrl_driver);
+}
+arch_initcall(tegra124_pinctrl_init);
diff --git a/drivers/pinctrl/tegra/pinctrl-tegra20.c b/drivers/pinctrl/tegra/pinctrl-tegra20.c
index 624889ed3a9d..1fc82a9576e0 100644
--- a/drivers/pinctrl/tegra/pinctrl-tegra20.c
+++ b/drivers/pinctrl/tegra/pinctrl-tegra20.c
@@ -2277,4 +2277,9 @@ static struct platform_driver tegra20_pinctrl_driver = {
},
.probe = tegra20_pinctrl_probe,
};
-builtin_platform_driver(tegra20_pinctrl_driver);
+
+static int __init tegra20_pinctrl_init(void)
+{
+ return platform_driver_register(&tegra20_pinctrl_driver);
+}
+arch_initcall(tegra20_pinctrl_init);
diff --git a/drivers/pinctrl/tegra/pinctrl-tegra210.c b/drivers/pinctrl/tegra/pinctrl-tegra210.c
index 0956a1c73391..3e77f5474dd8 100644
--- a/drivers/pinctrl/tegra/pinctrl-tegra210.c
+++ b/drivers/pinctrl/tegra/pinctrl-tegra210.c
@@ -1582,4 +1582,9 @@ static struct platform_driver tegra210_pinctrl_driver = {
},
.probe = tegra210_pinctrl_probe,
};
-builtin_platform_driver(tegra210_pinctrl_driver);
+
+static int __init tegra210_pinctrl_init(void)
+{
+ return platform_driver_register(&tegra210_pinctrl_driver);
+}
+arch_initcall(tegra210_pinctrl_init);
diff --git a/drivers/pinctrl/tegra/pinctrl-tegra30.c b/drivers/pinctrl/tegra/pinctrl-tegra30.c
index c923ad58af84..10e617003e9c 100644
--- a/drivers/pinctrl/tegra/pinctrl-tegra30.c
+++ b/drivers/pinctrl/tegra/pinctrl-tegra30.c
@@ -2503,4 +2503,9 @@ static struct platform_driver tegra30_pinctrl_driver = {
},
.probe = tegra30_pinctrl_probe,
};
-builtin_platform_driver(tegra30_pinctrl_driver);
+
+static int __init tegra30_pinctrl_init(void)
+{
+ return platform_driver_register(&tegra30_pinctrl_driver);
+}
+arch_initcall(tegra30_pinctrl_init);