From 3d7c821c1d8071e517048c8b4afdf33109441c0f Mon Sep 17 00:00:00 2001 From: Andy Shevchenko Date: Fri, 4 Jun 2021 19:50:46 +0300 Subject: [PATCH] ACPI: scan: Constify acpi_dma_supported() helper function Constify arguments to acpi_dma_supported(). The function doesn't need to change the content of the passed argument and when it's const it allows to supply the result of other functions that may return a pointer to a constant object. Signed-off-by: Andy Shevchenko [ rjw: Subject edit ] Signed-off-by: Rafael J. Wysocki --- drivers/acpi/scan.c | 2 +- include/acpi/acpi_bus.h | 2 +- include/linux/acpi.h | 2 +- 3 files changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c index a22778e..609405c 100644 --- a/drivers/acpi/scan.c +++ b/drivers/acpi/scan.c @@ -1404,7 +1404,7 @@ void acpi_free_pnp_ids(struct acpi_device_pnp *pnp) * * Return false if DMA is not supported. Otherwise, return true */ -bool acpi_dma_supported(struct acpi_device *adev) +bool acpi_dma_supported(const struct acpi_device *adev) { if (!adev) return false; diff --git a/include/acpi/acpi_bus.h b/include/acpi/acpi_bus.h index 3a82faa..2fbd2c2 100644 --- a/include/acpi/acpi_bus.h +++ b/include/acpi/acpi_bus.h @@ -586,7 +586,7 @@ struct acpi_pci_root { /* helper */ -bool acpi_dma_supported(struct acpi_device *adev); +bool acpi_dma_supported(const struct acpi_device *adev); 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); diff --git a/include/linux/acpi.h b/include/linux/acpi.h index 40657f2..97f1c55 100644 --- a/include/linux/acpi.h +++ b/include/linux/acpi.h @@ -911,7 +911,7 @@ acpi_create_platform_device(struct acpi_device *adev, return NULL; } -static inline bool acpi_dma_supported(struct acpi_device *adev) +static inline bool acpi_dma_supported(const struct acpi_device *adev) { return false; } -- 2.7.4