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05c8afe425
This should not happen in production systems but we should test for all callback arguments before invoking the config_stream callback. Update the prototype to clarify that the first argument is mandatory. Also use local variable instead of multiple dereferences to improve readability. Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Link: https://lore.kernel.org/r/20190806005522.22642-2-pierre-louis.bossart@linux.intel.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
40 lines
979 B
C
40 lines
979 B
C
/* SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause) */
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/* Copyright(c) 2015-17 Intel Corporation. */
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#ifndef __SDW_INTEL_H
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#define __SDW_INTEL_H
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/**
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* struct sdw_intel_ops: Intel audio driver callback ops
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*
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* @config_stream: configure the stream with the hw_params
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* the first argument containing the context is mandatory
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*/
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struct sdw_intel_ops {
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int (*config_stream)(void *arg, void *substream,
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void *dai, void *hw_params, int stream_num);
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};
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/**
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* struct sdw_intel_res - Soundwire Intel resource structure
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* @mmio_base: mmio base of SoundWire registers
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* @irq: interrupt number
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* @handle: ACPI parent handle
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* @parent: parent device
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* @ops: callback ops
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* @arg: callback arg
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*/
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struct sdw_intel_res {
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void __iomem *mmio_base;
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int irq;
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acpi_handle handle;
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struct device *parent;
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const struct sdw_intel_ops *ops;
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void *arg;
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};
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void *sdw_intel_init(acpi_handle *parent_handle, struct sdw_intel_res *res);
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void sdw_intel_exit(void *arg);
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#endif
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