Merge drm/drm-fixes into drm-misc-fixes

Getting fixes and updates from v7.1-rc1.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>

1 files changed, 94 insertions, 2 deletions

diff --git a/include/linux/device.h b/include/linux/device.h
index e65d564f01cd..9c8fde6a3d86 100644
--- a/include/linux/device.h
+++ b/include/linux/device.h
@@ -190,6 +190,22 @@ ssize_t device_show_string(struct device *dev, struct device_attribute *attr,
 	struct device_attribute dev_attr_##_name = __ATTR_RW_MODE(_name, 0600)
 
 /**
+ * DEVICE_ATTR_RW_NAMED - Define a read-write device attribute with a sysfs name
+ * that differs from the function name.
+ * @_name: Attribute function preface
+ * @_attrname: Attribute name as it wil be exposed in the sysfs.
+ *
+ * Like DEVICE_ATTR_RW(), but allows for reusing names under separate paths in
+ * the same driver.
+ */
+#define DEVICE_ATTR_RW_NAMED(_name, _attrname)                            \
+	struct device_attribute dev_attr_##_name = {                      \
+		.attr = { .name = _attrname, .mode = 0644 }, \
+		.show = _name##_show,                                     \
+		.store = _name##_store,                                   \
+	}
+
+/**
  * DEVICE_ATTR_RO - Define a readable device attribute.
  * @_name: Attribute name.
  *
@@ -208,6 +224,21 @@ ssize_t device_show_string(struct device *dev, struct device_attribute *attr,
 	struct device_attribute dev_attr_##_name = __ATTR_RO_MODE(_name, 0400)
 
 /**
+ * DEVICE_ATTR_RO_NAMED - Define a read-only device attribute with a sysfs name
+ * that differs from the function name.
+ * @_name: Attribute function preface
+ * @_attrname: Attribute name as it wil be exposed in the sysfs.
+ *
+ * Like DEVICE_ATTR_RO(), but allows for reusing names under separate paths in
+ * the same driver.
+ */
+#define DEVICE_ATTR_RO_NAMED(_name, _attrname)                            \
+	struct device_attribute dev_attr_##_name = {                      \
+		.attr = { .name = _attrname, .mode = 0444 }, \
+		.show = _name##_show,                                     \
+	}
+
+/**
  * DEVICE_ATTR_WO - Define an admin-only writable device attribute.
  * @_name: Attribute name.
  *
@@ -217,6 +248,21 @@ ssize_t device_show_string(struct device *dev, struct device_attribute *attr,
 	struct device_attribute dev_attr_##_name = __ATTR_WO(_name)
 
 /**
+ * DEVICE_ATTR_WO_NAMED - Define a read-only device attribute with a sysfs name
+ * that differs from the function name.
+ * @_name: Attribute function preface
+ * @_attrname: Attribute name as it wil be exposed in the sysfs.
+ *
+ * Like DEVICE_ATTR_WO(), but allows for reusing names under separate paths in
+ * the same driver.
+ */
+#define DEVICE_ATTR_WO_NAMED(_name, _attrname)                            \
+	struct device_attribute dev_attr_##_name = {                      \
+		.attr = { .name = _attrname, .mode = 0200 }, \
+		.store = _name##_store,                                   \
+	}
+
+/**
  * DEVICE_ULONG_ATTR - Define a device attribute backed by an unsigned long.
  * @_name: Attribute name.
  * @_mode: File mode.
@@ -459,6 +505,22 @@ struct device_physical_location {
 };
 
 /**
+ * enum struct_device_flags - Flags in struct device
+ *
+ * Each flag should have a set of accessor functions created via
+ * __create_dev_flag_accessors() for each access.
+ *
+ * @DEV_FLAG_READY_TO_PROBE: If set then device_add() has finished enough
+ *		initialization that probe could be called.
+ * @DEV_FLAG_COUNT: Number of defined struct_device_flags.
+ */
+enum struct_device_flags {
+	DEV_FLAG_READY_TO_PROBE = 0,
+
+	DEV_FLAG_COUNT
+};
+
+/**
  * struct device - The basic device structure
  * @parent:	The device's "parent" device, the device to which it is attached.
  * 		In most cases, a parent device is some sort of bus or host
@@ -553,6 +615,7 @@ struct device_physical_location {
  * @dma_skip_sync: DMA sync operations can be skipped for coherent buffers.
  * @dma_iommu: Device is using default IOMMU implementation for DMA and
  *		doesn't rely on dma_ops structure.
+ * @flags:	DEV_FLAG_XXX flags. Use atomic bitfield operations to modify.
  *
  * At the lowest level, every device in a Linux system is represented by an
  * instance of struct device. The device structure contains the information
@@ -675,8 +738,36 @@ struct device {
 #ifdef CONFIG_IOMMU_DMA
 	bool			dma_iommu:1;
 #endif
+
+	DECLARE_BITMAP(flags, DEV_FLAG_COUNT);
 };
 
+#define __create_dev_flag_accessors(accessor_name, flag_name) \
+static inline bool dev_##accessor_name(const struct device *dev) \
+{ \
+	return test_bit(flag_name, dev->flags); \
+} \
+static inline void dev_set_##accessor_name(struct device *dev) \
+{ \
+	set_bit(flag_name, dev->flags); \
+} \
+static inline void dev_clear_##accessor_name(struct device *dev) \
+{ \
+	clear_bit(flag_name, dev->flags); \
+} \
+static inline void dev_assign_##accessor_name(struct device *dev, bool value) \
+{ \
+	assign_bit(flag_name, dev->flags, value); \
+} \
+static inline bool dev_test_and_set_##accessor_name(struct device *dev) \
+{ \
+	return test_and_set_bit(flag_name, dev->flags); \
+}
+
+__create_dev_flag_accessors(ready_to_probe, DEV_FLAG_READY_TO_PROBE);
+
+#undef __create_dev_flag_accessors
+
 /**
  * struct device_link - Device link representation.
  * @supplier: The device on the supplier end of the link.
@@ -965,6 +1056,7 @@ static inline void device_unlock(struct device *dev)
 }
 
 DEFINE_GUARD(device, struct device *, device_lock(_T), device_unlock(_T))
+DEFINE_GUARD_COND(device, _intr, device_lock_interruptible(_T), _RET == 0)
 
 static inline void device_lock_assert(struct device *dev)
 {
@@ -1185,9 +1277,9 @@ device_create_with_groups(const struct class *cls, struct device *parent, dev_t
 void device_destroy(const struct class *cls, dev_t devt);
 
 int __must_check device_add_groups(struct device *dev,
-				   const struct attribute_group **groups);
+				   const struct attribute_group *const *groups);
 void device_remove_groups(struct device *dev,
-			  const struct attribute_group **groups);
+			  const struct attribute_group *const *groups);
 
 static inline int __must_check device_add_group(struct device *dev,
 					const struct attribute_group *grp)