From 48a9db462d99494583dad829969616ac90a8df4e Mon Sep 17 00:00:00 2001 From: Bartlomiej Zolnierkiewicz Date: Wed, 3 Jul 2013 15:05:06 -0700 Subject: drivers/dma: remove unused support for MEMSET operations There have never been any real users of MEMSET operations since they have been introduced in January 2007 by commit 7405f74badf4 ("dmaengine: refactor dmaengine around dma_async_tx_descriptor"). Therefore remove support for them for now, it can be always brought back when needed. [sebastian.hesselbarth@gmail.com: fix drivers/dma/mv_xor] Signed-off-by: Bartlomiej Zolnierkiewicz Signed-off-by: Kyungmin Park Signed-off-by: Sebastian Hesselbarth Cc: Vinod Koul Acked-by: Dan Williams Cc: Tomasz Figa Cc: Herbert Xu Cc: Olof Johansson Cc: Kevin Hilman Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/dma/ppc4xx/adma.c | 47 ----------------------------------------------- 1 file changed, 47 deletions(-) (limited to 'drivers/dma/ppc4xx') diff --git a/drivers/dma/ppc4xx/adma.c b/drivers/dma/ppc4xx/adma.c index 5d3d95569a1e..1e220f8dfd8c 100644 --- a/drivers/dma/ppc4xx/adma.c +++ b/drivers/dma/ppc4xx/adma.c @@ -2322,47 +2322,6 @@ static struct dma_async_tx_descriptor *ppc440spe_adma_prep_dma_memcpy( return sw_desc ? &sw_desc->async_tx : NULL; } -/** - * ppc440spe_adma_prep_dma_memset - prepare CDB for a MEMSET operation - */ -static struct dma_async_tx_descriptor *ppc440spe_adma_prep_dma_memset( - struct dma_chan *chan, dma_addr_t dma_dest, int value, - size_t len, unsigned long flags) -{ - struct ppc440spe_adma_chan *ppc440spe_chan; - struct ppc440spe_adma_desc_slot *sw_desc, *group_start; - int slot_cnt, slots_per_op; - - ppc440spe_chan = to_ppc440spe_adma_chan(chan); - - if (unlikely(!len)) - return NULL; - - BUG_ON(len > PPC440SPE_ADMA_DMA_MAX_BYTE_COUNT); - - spin_lock_bh(&ppc440spe_chan->lock); - - dev_dbg(ppc440spe_chan->device->common.dev, - "ppc440spe adma%d: %s cal: %u len: %u int_en %d\n", - ppc440spe_chan->device->id, __func__, value, len, - flags & DMA_PREP_INTERRUPT ? 1 : 0); - - slot_cnt = slots_per_op = 1; - sw_desc = ppc440spe_adma_alloc_slots(ppc440spe_chan, slot_cnt, - slots_per_op); - if (sw_desc) { - group_start = sw_desc->group_head; - ppc440spe_desc_init_memset(group_start, value, flags); - ppc440spe_adma_set_dest(group_start, dma_dest, 0); - ppc440spe_desc_set_byte_count(group_start, ppc440spe_chan, len); - sw_desc->unmap_len = len; - sw_desc->async_tx.flags = flags; - } - spin_unlock_bh(&ppc440spe_chan->lock); - - return sw_desc ? &sw_desc->async_tx : NULL; -} - /** * ppc440spe_adma_prep_dma_xor - prepare CDB for a XOR operation */ @@ -4125,7 +4084,6 @@ static void ppc440spe_adma_init_capabilities(struct ppc440spe_adma_device *adev) case PPC440SPE_DMA1_ID: dma_cap_set(DMA_MEMCPY, adev->common.cap_mask); dma_cap_set(DMA_INTERRUPT, adev->common.cap_mask); - dma_cap_set(DMA_MEMSET, adev->common.cap_mask); dma_cap_set(DMA_PQ, adev->common.cap_mask); dma_cap_set(DMA_PQ_VAL, adev->common.cap_mask); dma_cap_set(DMA_XOR_VAL, adev->common.cap_mask); @@ -4151,10 +4109,6 @@ static void ppc440spe_adma_init_capabilities(struct ppc440spe_adma_device *adev) adev->common.device_prep_dma_memcpy = ppc440spe_adma_prep_dma_memcpy; } - if (dma_has_cap(DMA_MEMSET, adev->common.cap_mask)) { - adev->common.device_prep_dma_memset = - ppc440spe_adma_prep_dma_memset; - } if (dma_has_cap(DMA_XOR, adev->common.cap_mask)) { adev->common.max_xor = XOR_MAX_OPS; adev->common.device_prep_dma_xor = @@ -4217,7 +4171,6 @@ static void ppc440spe_adma_init_capabilities(struct ppc440spe_adma_device *adev) dma_has_cap(DMA_XOR, adev->common.cap_mask) ? "xor " : "", dma_has_cap(DMA_XOR_VAL, adev->common.cap_mask) ? "xor_val " : "", dma_has_cap(DMA_MEMCPY, adev->common.cap_mask) ? "memcpy " : "", - dma_has_cap(DMA_MEMSET, adev->common.cap_mask) ? "memset " : "", dma_has_cap(DMA_INTERRUPT, adev->common.cap_mask) ? "intr " : ""); } -- cgit v1.2.3