xiaomi-sm8450/android_kernel_xiaomi_sm8450
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list.h: Add list_splice_tail() and list_splice_tail_init()

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If you are using linked lists for queues list_splice() will not do what
you would expect even if you use the elements passed reversed. We need
to handle these differently. We add list_splice_tail() and
list_splice_tail_init().

Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Luis R. Rodriguez
2008-08-06 15:21:26 -07:00
committed by John W. Linville
parent e6fce5b916
commit 7d283aee50
3 changed files with 40 additions and 11 deletions
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2
drivers/dma/ioat_dma.c
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@@ -551,7 +551,7 @@ static dma_cookie_t ioat1_tx_submit(struct dma_async_tx_descriptor *tx)
/* write address into NextDescriptor field of last desc in chain */
to_ioat_desc(ioat_chan->used_desc.prev)->hw->next =
first->async_tx.phys;
__list_splice(&new_chain, ioat_chan->used_desc.prev);
list_splice_tail(&new_chain, &ioat_chan->used_desc);
ioat_chan->dmacount += desc_count;
ioat_chan->pending += desc_count;