These DMA APIs are replaced with the newer versions, which return
the enum dev_dma_attr. So, we can safely remove them.
Signed-off-by: Suravee Suthikulpanit <suravee.suthikulpa...@amd.com>
CC: Rafael J. Wysocki <r...@rjwysocki.net>
---
drivers/base/property.c | 13 -------------
include/acpi/acpi_bus.h | 34 ----------------------------------
include/linux/acpi.h | 5 -----
include/linux/property.h | 2 --
4 files changed, 54 deletions(-)
diff --git a/drivers/base/property.c b/drivers/base/property.c
index 05d57a2..1325ff2 100644
--- a/drivers/base/property.c
+++ b/drivers/base/property.c
@@ -598,19 +598,6 @@ unsigned int device_get_child_node_count(struct device
*dev)
}
EXPORT_SYMBOL_GPL(device_get_child_node_count);
-bool device_dma_is_coherent(struct device *dev)
-{
- bool coherent = false;
-
- if (IS_ENABLED(CONFIG_OF) && dev->of_node)
- coherent = of_dma_is_coherent(dev->of_node);
- else
- acpi_check_dma(ACPI_COMPANION(dev), &coherent);
-
- return coherent;
-}
-EXPORT_SYMBOL_GPL(device_dma_is_coherent);
-
bool device_dma_supported(struct device *dev)
{
/* For DT, this is always supported.
diff --git a/include/acpi/acpi_bus.h b/include/acpi/acpi_bus.h
index 920b774..ad0a5ff 100644
--- a/include/acpi/acpi_bus.h
+++ b/include/acpi/acpi_bus.h
@@ -390,40 +390,6 @@ struct acpi_data_node {
struct completion kobj_done;
};
-static inline bool acpi_check_dma(struct acpi_device *adev, bool *coherent)
-{
- bool ret = false;
-
- if (!adev)
- return ret;
-
- /**
- * Currently, we only support _CCA=1 (i.e. coherent_dma=1)
- * This should be equivalent to specifyig dma-coherent for
- * a device in OF.
- *
- * For the case when _CCA=0 (i.e. coherent_dma=0 && cca_seen=1),
- * There are two cases:
- * case 1. Do not support and disable DMA.
- * case 2. Support but rely on arch-specific cache maintenance for
- * non-coherence DMA operations.
- * Currently, we implement case 2 above.
- *
- * For the case when _CCA is missing (i.e. cca_seen=0) and
- * platform specifies ACPI_CCA_REQUIRED, we do not support DMA,
- * and fallback to arch-specific default handling.
- *
- * See acpi_init_coherency() for more info.
- */
- if (adev->flags.coherent_dma ||
- (adev->flags.cca_seen && IS_ENABLED(CONFIG_ARM64))) {
- ret = true;
- if (coherent)
- *coherent = adev->flags.coherent_dma;
- }
- return ret;
-}
-
static inline bool is_acpi_node(struct fwnode_handle *fwnode)
{
return fwnode && (fwnode->type == FWNODE_ACPI
diff --git a/include/linux/acpi.h b/include/linux/acpi.h
index 6527920..fa2bbc0 100644
--- a/include/linux/acpi.h
+++ b/include/linux/acpi.h
@@ -593,11 +593,6 @@ static inline int acpi_device_modalias(struct device *dev,
return -ENODEV;
}
-static inline bool acpi_check_dma(struct acpi_device *adev, bool *coherent)
-{
- return false;
-}
-
static inline bool acpi_dma_supported(struct acpi_device *adev)
{
return false;
diff --git a/include/linux/property.h b/include/linux/property.h
index 7200490..0a3705a 100644
--- a/include/linux/property.h
+++ b/include/linux/property.h
@@ -174,8 +174,6 @@ struct property_set {
void device_add_property_set(struct device *dev, struct property_set *pset);
-bool device_dma_is_coherent(struct device *dev);
-
bool device_dma_supported(struct device *dev);
enum dev_dma_attr device_get_dma_attr(struct device *dev);
--
2.1.0
--
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