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authorSuthikulpanit, Suravee <Suravee.Suthikulpanit@amd.com>2015-10-28 15:50:51 -0700
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2015-11-07 01:29:22 +0100
commitab3d527329f01dd63dc852041006d1a24895d116 (patch)
tree992f8b6afc3af79edb8ce18c31b579f33cda8313 /include/acpi
parent1831eff876bd0bb8d64e9965a7ff47486c9a3ecd (diff)
device property: ACPI: Remove unused DMA APIs
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.Suthikulpanit@amd.com> Acked-by: Bjorn Helgaas <bhelgaas@google.com> Reviewed-by: Hanjun Guo <hanjun.guo@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'include/acpi')
-rw-r--r--include/acpi/acpi_bus.h34
1 files changed, 0 insertions, 34 deletions
diff --git a/include/acpi/acpi_bus.h b/include/acpi/acpi_bus.h
index e56e6520edce..e45d58d6b0a7 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

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