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dma-mapping: remove dma_deconfigure 

This goes through a lot of hooks just to call arch_teardown_dma_ops.
Replace it with a direct call instead.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Robin Murphy <robin.murphy@arm.com>
This commit is contained in:
Christoph Hellwig 2018-08-24 10:28:18 +02:00
parent ccf640f4c9
commit dc3c05504d
9 changed files with 3 additions and 43 deletions
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2
drivers/acpi/arm64/iort.c
View File

@ -1428,7 +1428,7 @@ static int __init iort_add_platform_device(struct acpi_iort_node *node,
return 0;
dma_deconfigure:
acpi_dma_deconfigure(&pdev->dev);
arch_teardown_dma_ops(&pdev->dev);
dev_put:
platform_device_put(pdev);

10
drivers/acpi/scan.c
View File

@ -1469,16 +1469,6 @@ int acpi_dma_configure(struct device *dev, enum dev_dma_attr attr)
}
EXPORT_SYMBOL_GPL(acpi_dma_configure);
/**
* acpi_dma_deconfigure - Tear-down DMA configuration for the device.
* @dev: The pointer to the device
*/
void acpi_dma_deconfigure(struct device *dev)
{
arch_teardown_dma_ops(dev);
}
EXPORT_SYMBOL_GPL(acpi_dma_deconfigure);
static void acpi_init_coherency(struct acpi_device *adev)
{
unsigned long long cca = 0;

4
drivers/base/dd.c
View File

@ -539,7 +539,7 @@ static int really_probe(struct device *dev, struct device_driver *drv)
goto done;
probe_failed:
dma_deconfigure(dev);
arch_teardown_dma_ops(dev);
dma_failed:
if (dev->bus)
blocking_notifier_call_chain(&dev->bus->p->bus_notifier,
@ -968,7 +968,7 @@ static void __device_release_driver(struct device *dev, struct device *parent)
drv->remove(dev);
device_links_driver_cleanup(dev);
dma_deconfigure(dev);
arch_teardown_dma_ops(dev);
devres_release_all(dev);
dev->driver = NULL;

12
drivers/of/device.c
View File

@ -170,18 +170,6 @@ int of_dma_configure(struct device *dev, struct device_node *np, bool force_dma)
}
EXPORT_SYMBOL_GPL(of_dma_configure);
/**
* of_dma_deconfigure - Clean up DMA configuration
* @dev: Device for which to clean up DMA configuration
*
* Clean up all configuration performed by of_dma_configure_ops() and free all
* resources that have been allocated.
*/
void of_dma_deconfigure(struct device *dev)
{
arch_teardown_dma_ops(dev);
}
int of_device_register(struct platform_device *pdev)
{
device_initialize(&pdev->dev);

1
include/acpi/acpi_bus.h
View File

@ -595,7 +595,6 @@ enum dev_dma_attr acpi_get_dma_attr(struct acpi_device *adev);
int acpi_dma_get_range(struct device *dev, u64 *dma_addr, u64 *offset,
u64 *size);
int acpi_dma_configure(struct device *dev, enum dev_dma_attr attr);
void acpi_dma_deconfigure(struct device *dev);
struct acpi_device *acpi_find_child_device(struct acpi_device *parent,
u64 address, bool check_children);

2
include/linux/acpi.h
View File

@ -831,8 +831,6 @@ static inline int acpi_dma_configure(struct device *dev,
return 0;
}
static inline void acpi_dma_deconfigure(struct device *dev) { }
#define ACPI_PTR(_ptr) (NULL)
static inline void acpi_device_set_enumerated(struct acpi_device *adev)

6
include/linux/dma-mapping.h
View File

@ -753,12 +753,6 @@ dma_mark_declared_memory_occupied(struct device *dev,
}
#endif /* CONFIG_HAVE_GENERIC_DMA_COHERENT */
#ifdef CONFIG_HAS_DMA
void dma_deconfigure(struct device *dev);
#else
static inline void dma_deconfigure(struct device *dev) {}
#endif
/*
* Managed DMA API
*/

3
include/linux/of_device.h
View File

@ -58,7 +58,6 @@ static inline struct device_node *of_cpu_device_node_get(int cpu)
int of_dma_configure(struct device *dev,
struct device_node *np,
bool force_dma);
void of_dma_deconfigure(struct device *dev);
#else /* CONFIG_OF */
static inline int of_driver_match_device(struct device *dev,
@ -113,8 +112,6 @@ static inline int of_dma_configure(struct device *dev,
{
return 0;
}
static inline void of_dma_deconfigure(struct device *dev)
{}
#endif /* CONFIG_OF */
#endif /* _LINUX_OF_DEVICE_H */

6
kernel/dma/mapping.c
View File

@ -327,9 +327,3 @@ void dma_common_free_remap(void *cpu_addr, size_t size, unsigned long vm_flags)
vunmap(cpu_addr);
}
#endif
void dma_deconfigure(struct device *dev)
{
of_dma_deconfigure(dev);
acpi_dma_deconfigure(dev);
}