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Date: Mon, 19 Feb 2024 09:40:50 -0300
From: "Ricardo B. Marliere" <ricardo@...liere.net>
To: Johan Hovold <johan@...nel.org>, Alex Elder <elder@...nel.org>,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc: greybus-dev@...ts.linaro.org, linux-kernel@...r.kernel.org,
"Ricardo B. Marliere" <ricardo@...liere.net>
Subject: [PATCH] greybus: constify the struct device_type usage
Since commit aed65af1cc2f ("drivers: make device_type const"), the driver
core can properly handle constant struct device_type. Move the
greybus_hd_type, greybus_module_type, greybus_interface_type,
greybus_control_type, greybus_bundle_type and greybus_svc_type variables to
be constant structures as well, placing it into read-only memory which can
not be modified at runtime.
Signed-off-by: Ricardo B. Marliere <ricardo@...liere.net>
---
drivers/greybus/bundle.c | 2 +-
drivers/greybus/control.c | 2 +-
drivers/greybus/hd.c | 2 +-
drivers/greybus/interface.c | 2 +-
drivers/greybus/module.c | 2 +-
drivers/greybus/svc.c | 2 +-
include/linux/greybus.h | 12 ++++++------
7 files changed, 12 insertions(+), 12 deletions(-)
diff --git a/drivers/greybus/bundle.c b/drivers/greybus/bundle.c
index 84660729538b..a6e1cca06172 100644
--- a/drivers/greybus/bundle.c
+++ b/drivers/greybus/bundle.c
@@ -166,7 +166,7 @@ static const struct dev_pm_ops gb_bundle_pm_ops = {
SET_RUNTIME_PM_OPS(gb_bundle_suspend, gb_bundle_resume, gb_bundle_idle)
};
-struct device_type greybus_bundle_type = {
+const struct device_type greybus_bundle_type = {
.name = "greybus_bundle",
.release = gb_bundle_release,
.pm = &gb_bundle_pm_ops,
diff --git a/drivers/greybus/control.c b/drivers/greybus/control.c
index 359a25841973..b5cf49d09df2 100644
--- a/drivers/greybus/control.c
+++ b/drivers/greybus/control.c
@@ -436,7 +436,7 @@ static void gb_control_release(struct device *dev)
kfree(control);
}
-struct device_type greybus_control_type = {
+const struct device_type greybus_control_type = {
.name = "greybus_control",
.release = gb_control_release,
};
diff --git a/drivers/greybus/hd.c b/drivers/greybus/hd.c
index 72b21bf2d7d3..e2f3496bddc3 100644
--- a/drivers/greybus/hd.c
+++ b/drivers/greybus/hd.c
@@ -116,7 +116,7 @@ static void gb_hd_release(struct device *dev)
kfree(hd);
}
-struct device_type greybus_hd_type = {
+const struct device_type greybus_hd_type = {
.name = "greybus_host_device",
.release = gb_hd_release,
};
diff --git a/drivers/greybus/interface.c b/drivers/greybus/interface.c
index 9ec949a438ef..a88dc701289c 100644
--- a/drivers/greybus/interface.c
+++ b/drivers/greybus/interface.c
@@ -765,7 +765,7 @@ static const struct dev_pm_ops gb_interface_pm_ops = {
gb_interface_runtime_idle)
};
-struct device_type greybus_interface_type = {
+const struct device_type greybus_interface_type = {
.name = "greybus_interface",
.release = gb_interface_release,
.pm = &gb_interface_pm_ops,
diff --git a/drivers/greybus/module.c b/drivers/greybus/module.c
index 36f77f9e1d74..7f7153a1dd60 100644
--- a/drivers/greybus/module.c
+++ b/drivers/greybus/module.c
@@ -81,7 +81,7 @@ static void gb_module_release(struct device *dev)
kfree(module);
}
-struct device_type greybus_module_type = {
+const struct device_type greybus_module_type = {
.name = "greybus_module",
.release = gb_module_release,
};
diff --git a/drivers/greybus/svc.c b/drivers/greybus/svc.c
index 0d7e749174a4..4256467fcd35 100644
--- a/drivers/greybus/svc.c
+++ b/drivers/greybus/svc.c
@@ -1305,7 +1305,7 @@ static void gb_svc_release(struct device *dev)
kfree(svc);
}
-struct device_type greybus_svc_type = {
+const struct device_type greybus_svc_type = {
.name = "greybus_svc",
.release = gb_svc_release,
};
diff --git a/include/linux/greybus.h b/include/linux/greybus.h
index 18c0fb958b74..5f9791fae3c0 100644
--- a/include/linux/greybus.h
+++ b/include/linux/greybus.h
@@ -106,12 +106,12 @@ struct dentry *gb_debugfs_get(void);
extern struct bus_type greybus_bus_type;
-extern struct device_type greybus_hd_type;
-extern struct device_type greybus_module_type;
-extern struct device_type greybus_interface_type;
-extern struct device_type greybus_control_type;
-extern struct device_type greybus_bundle_type;
-extern struct device_type greybus_svc_type;
+extern const struct device_type greybus_hd_type;
+extern const struct device_type greybus_module_type;
+extern const struct device_type greybus_interface_type;
+extern const struct device_type greybus_control_type;
+extern const struct device_type greybus_bundle_type;
+extern const struct device_type greybus_svc_type;
static inline int is_gb_host_device(const struct device *dev)
{
---
base-commit: b401b621758e46812da61fa58a67c3fd8d91de0d
change-id: 20240219-device_cleanup-greybus-c97c1ef52458
Best regards,
--
Ricardo B. Marliere <ricardo@...liere.net>
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