Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
iio: buffer-dmaengine: Use the cleanup.h API
Make use of the cleanup.h API for locks in order to simplify some code
paths.
Signed-off-by: Nuno Sá <nuno.sa@analog.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
authored by
Nuno Sá
and committed by
Jonathan Cameron
a0dcec6a
0c1316b9
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drivers/iio/buffer/industrialio-buffer-dmaengine.c
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drivers/iio/buffer/industrialio-buffer-dmaengine.c
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#include <linux/slab.h>
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#include <linux/kernel.h>
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#include <linux/cleanup.h>
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#include <linux/dmaengine.h>
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#include <linux/dma-mapping.h>
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#include <linux/spinlock.h>
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const struct dmaengine_result *result)
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{
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struct iio_dma_buffer_block *block = data;
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unsigned long flags;
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spin_lock_irqsave(&block->queue->list_lock, flags);
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list_del(&block->head);
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spin_unlock_irqrestore(&block->queue->list_lock, flags);
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scoped_guard(spinlock_irqsave, &block->queue->list_lock)
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list_del(&block->head);
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block->bytes_used -= result->residue;
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iio_dma_buffer_block_done(block);
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}
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if (dma_submit_error(cookie))
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return dma_submit_error(cookie);
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spin_lock_irq(&dmaengine_buffer->queue.list_lock);
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list_add_tail(&block->head, &dmaengine_buffer->active);
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spin_unlock_irq(&dmaengine_buffer->queue.list_lock);
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scoped_guard(spinlock_irq, &dmaengine_buffer->queue.list_lock)
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list_add_tail(&block->head, &dmaengine_buffer->active);
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dma_async_issue_pending(dmaengine_buffer->chan);
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