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| author | Jarkko Nikula <jarkko.nikula@linux.intel.com> | 2015-09-04 16:12:30 +0300 |
|---|---|---|
| committer | Vinod Koul <vinod.koul@intel.com> | 2015-09-30 12:21:27 +0530 |
| commit | aff1e0cee36ab679552846a18d15dcb6d2e3fc4c (patch) | |
| tree | 701c6f1980561c8cb7e701f43f64ecc07bb879db /drivers/dma/acpi-dma.c | |
| parent | ddfe4d0cce7828d79f3e3762c664342658c3f254 (diff) | |
| download | linux-aff1e0cee36ab679552846a18d15dcb6d2e3fc4c.tar.bz2 | |
dmaengine: acpi: Use ACPI_COMPANION() instead of acpi_bus_get_device()
Get pointer to the struct acpi_device by using ACPI_COMPANION() macro. This
is more efficient than using ACPI_HANDLE() and acpi_bus_get_device().
Signed-off-by: Jarkko Nikula <jarkko.nikula@linux.intel.com>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Diffstat (limited to 'drivers/dma/acpi-dma.c')
| -rw-r--r-- | drivers/dma/acpi-dma.c | 11 |
1 files changed, 5 insertions, 6 deletions
diff --git a/drivers/dma/acpi-dma.c b/drivers/dma/acpi-dma.c index 5a635646e05c..04257432c482 100644 --- a/drivers/dma/acpi-dma.c +++ b/drivers/dma/acpi-dma.c @@ -160,10 +160,8 @@ int acpi_dma_controller_register(struct device *dev, return -EINVAL; /* Check if the device was enumerated by ACPI */ - if (!ACPI_HANDLE(dev)) - return -EINVAL; - - if (acpi_bus_get_device(ACPI_HANDLE(dev), &adev)) + adev = ACPI_COMPANION(dev); + if (!adev) return -EINVAL; adma = kzalloc(sizeof(*adma), GFP_KERNEL); @@ -358,10 +356,11 @@ struct dma_chan *acpi_dma_request_slave_chan_by_index(struct device *dev, int found; /* Check if the device was enumerated by ACPI */ - if (!dev || !ACPI_HANDLE(dev)) + if (!dev) return ERR_PTR(-ENODEV); - if (acpi_bus_get_device(ACPI_HANDLE(dev), &adev)) + adev = ACPI_COMPANION(dev); + if (!adev) return ERR_PTR(-ENODEV); memset(&pdata, 0, sizeof(pdata)); |