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authorGreg Kroah-Hartman <gregkh@linuxfoundation.org>2023-01-11 12:30:03 +0100
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2023-01-27 13:45:28 +0100
commita77ad4bf792652340ab334956e69b46ec2fdaefb (patch)
treefcb8692b4f9218194cca346d0ed8af82385d0022
parent8e3938a5d2d89d8a4b9688ba9cbec500640d401d (diff)
of: device: make of_device_uevent_modalias() take a const device *
of_device_uevent_modalias() does not modify the device pointer passed to it, so mark it constant. In order to properly do this, a number of busses need to have a modalias function added as they were attempting to just point to of_device_uevent_modalias instead of their bus-specific modalias function. This is fine except if the prototype for a bus and device type modalias function diverges and then problems could happen. To prevent all of that, just wrap the call to of_device_uevent_modalias() directly for each bus and device type individually. Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Nicholas Piggin <npiggin@gmail.com> Cc: Christophe Leroy <christophe.leroy@csgroup.eu> Cc: Chen-Yu Tsai <wens@csie.org> Cc: Jernej Skrabec <jernej.skrabec@gmail.com> Cc: Samuel Holland <samuel@sholland.org> Cc: David Airlie <airlied@gmail.com> Cc: Daniel Vetter <daniel@ffwll.ch> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Rob Herring <robh+dt@kernel.org> Cc: Frank Rowand <frowand.list@gmail.com> Cc: Liang He <windhl@126.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Christophe JAILLET <christophe.jaillet@wanadoo.fr> Cc: Thomas Zimmermann <tzimmermann@suse.de> Cc: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> Cc: Douglas Anderson <dianders@chromium.org> Cc: Lyude Paul <lyude@redhat.com> Cc: Corentin Labbe <clabbe@baylibre.com> Cc: Zou Wei <zou_wei@huawei.com> Cc: linuxppc-dev@lists.ozlabs.org Cc: linux-kernel@vger.kernel.org Cc: linux-arm-kernel@lists.infradead.org Cc: linux-sunxi@lists.linux.dev Cc: dri-devel@lists.freedesktop.org Cc: devicetree@vger.kernel.org Acked-by: Hans de Goede <hdegoede@redhat.com> Link: https://lore.kernel.org/r/20230111113018.459199-2-gregkh@linuxfoundation.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-rw-r--r--arch/powerpc/platforms/pseries/ibmebus.c7
-rw-r--r--drivers/bus/sunxi-rsb.c7
-rw-r--r--drivers/gpu/drm/display/drm_dp_aux_bus.c7
-rw-r--r--drivers/macintosh/macio_asic.c7
-rw-r--r--drivers/of/device.c4
-rw-r--r--include/linux/of_device.h4
6 files changed, 28 insertions, 8 deletions
diff --git a/arch/powerpc/platforms/pseries/ibmebus.c b/arch/powerpc/platforms/pseries/ibmebus.c
index a870cada7acd..58b798a0e879 100644
--- a/arch/powerpc/platforms/pseries/ibmebus.c
+++ b/arch/powerpc/platforms/pseries/ibmebus.c
@@ -426,9 +426,14 @@ static struct attribute *ibmebus_bus_device_attrs[] = {
};
ATTRIBUTE_GROUPS(ibmebus_bus_device);
+static int ibmebus_bus_modalias(struct device *dev, struct kobj_uevent_env *env)
+{
+ return of_device_uevent_modalias(dev, env);
+}
+
struct bus_type ibmebus_bus_type = {
.name = "ibmebus",
- .uevent = of_device_uevent_modalias,
+ .uevent = ibmebus_bus_modalias,
.bus_groups = ibmbus_bus_groups,
.match = ibmebus_bus_bus_match,
.probe = ibmebus_bus_device_probe,
diff --git a/drivers/bus/sunxi-rsb.c b/drivers/bus/sunxi-rsb.c
index 3aa91aed3bf7..a180af11e034 100644
--- a/drivers/bus/sunxi-rsb.c
+++ b/drivers/bus/sunxi-rsb.c
@@ -172,12 +172,17 @@ static void sunxi_rsb_device_remove(struct device *dev)
drv->remove(to_sunxi_rsb_device(dev));
}
+static int sunxi_rsb_device_modalias(struct device *dev, struct kobj_uevent_env *env)
+{
+ return of_device_uevent_modalias(dev, env);
+}
+
static struct bus_type sunxi_rsb_bus = {
.name = RSB_CTRL_NAME,
.match = sunxi_rsb_device_match,
.probe = sunxi_rsb_device_probe,
.remove = sunxi_rsb_device_remove,
- .uevent = of_device_uevent_modalias,
+ .uevent = sunxi_rsb_device_modalias,
};
static void sunxi_rsb_dev_release(struct device *dev)
diff --git a/drivers/gpu/drm/display/drm_dp_aux_bus.c b/drivers/gpu/drm/display/drm_dp_aux_bus.c
index f5741b45ca07..e31a0261c53e 100644
--- a/drivers/gpu/drm/display/drm_dp_aux_bus.c
+++ b/drivers/gpu/drm/display/drm_dp_aux_bus.c
@@ -161,9 +161,14 @@ static void dp_aux_ep_dev_release(struct device *dev)
kfree(aux_ep_with_data);
}
+static int dp_aux_ep_dev_modalias(struct device *dev, struct kobj_uevent_env *env)
+{
+ return of_device_uevent_modalias(dev, env);
+}
+
static struct device_type dp_aux_device_type_type = {
.groups = dp_aux_ep_dev_groups,
- .uevent = of_device_uevent_modalias,
+ .uevent = dp_aux_ep_dev_modalias,
.release = dp_aux_ep_dev_release,
};
diff --git a/drivers/macintosh/macio_asic.c b/drivers/macintosh/macio_asic.c
index 3bc1f374e657..7f2b0107c733 100644
--- a/drivers/macintosh/macio_asic.c
+++ b/drivers/macintosh/macio_asic.c
@@ -128,12 +128,17 @@ static int macio_device_resume(struct device * dev)
return 0;
}
+static int macio_device_modalias(struct device *dev, struct kobj_uevent_env *env)
+{
+ return of_device_uevent_modalias(dev, env);
+}
+
extern const struct attribute_group *macio_dev_groups[];
struct bus_type macio_bus_type = {
.name = "macio",
.match = macio_bus_match,
- .uevent = of_device_uevent_modalias,
+ .uevent = macio_device_modalias,
.probe = macio_device_probe,
.remove = macio_device_remove,
.shutdown = macio_device_shutdown,
diff --git a/drivers/of/device.c b/drivers/of/device.c
index c674a13c3055..dda51b7ce597 100644
--- a/drivers/of/device.c
+++ b/drivers/of/device.c
@@ -248,7 +248,7 @@ const void *of_device_get_match_data(const struct device *dev)
}
EXPORT_SYMBOL(of_device_get_match_data);
-static ssize_t of_device_get_modalias(struct device *dev, char *str, ssize_t len)
+static ssize_t of_device_get_modalias(const struct device *dev, char *str, ssize_t len)
{
const char *compat;
char *c;
@@ -372,7 +372,7 @@ void of_device_uevent(const struct device *dev, struct kobj_uevent_env *env)
mutex_unlock(&of_mutex);
}
-int of_device_uevent_modalias(struct device *dev, struct kobj_uevent_env *env)
+int of_device_uevent_modalias(const struct device *dev, struct kobj_uevent_env *env)
{
int sl;
diff --git a/include/linux/of_device.h b/include/linux/of_device.h
index ab7d557d541d..f4b57614979d 100644
--- a/include/linux/of_device.h
+++ b/include/linux/of_device.h
@@ -36,7 +36,7 @@ extern ssize_t of_device_modalias(struct device *dev, char *str, ssize_t len);
extern int of_device_request_module(struct device *dev);
extern void of_device_uevent(const struct device *dev, struct kobj_uevent_env *env);
-extern int of_device_uevent_modalias(struct device *dev, struct kobj_uevent_env *env);
+extern int of_device_uevent_modalias(const struct device *dev, struct kobj_uevent_env *env);
static inline struct device_node *of_cpu_device_node_get(int cpu)
{
@@ -83,7 +83,7 @@ static inline int of_device_request_module(struct device *dev)
return -ENODEV;
}
-static inline int of_device_uevent_modalias(struct device *dev,
+static inline int of_device_uevent_modalias(const struct device *dev,
struct kobj_uevent_env *env)
{
return -ENODEV;