diff options
author | Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> | 2013-07-04 02:05:06 +0400 |
---|---|---|
committer | Linus Torvalds <torvalds@linux-foundation.org> | 2013-07-04 03:07:42 +0400 |
commit | 48a9db462d99494583dad829969616ac90a8df4e (patch) | |
tree | d908a6172274a9d4d5c14752aa648086bc4721cd /drivers/dma/iop-adma.c | |
parent | dcf6d294830d46b0e6901477fb4bf455281d90c8 (diff) |
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 <b.zolnierkie@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Cc: Vinod Koul <vinod.koul@intel.com>
Acked-by: Dan Williams <djbw@fb.com>
Cc: Tomasz Figa <t.figa@samsung.com>
Cc: Herbert Xu <herbert@gondor.apana.org.au>
Cc: Olof Johansson <olof@lixom.net>
Cc: Kevin Hilman <khilman@linaro.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/dma/iop-adma.c')
-rw-r--r-- | drivers/dma/iop-adma.c | 66 |
1 files changed, 1 insertions, 65 deletions
diff --git a/drivers/dma/iop-adma.c b/drivers/dma/iop-adma.c index 7dafb9f3785f..c9cc08c2dbba 100644 --- a/drivers/dma/iop-adma.c +++ b/drivers/dma/iop-adma.c @@ -633,39 +633,6 @@ iop_adma_prep_dma_memcpy(struct dma_chan *chan, dma_addr_t dma_dest, } static struct dma_async_tx_descriptor * -iop_adma_prep_dma_memset(struct dma_chan *chan, dma_addr_t dma_dest, - int value, size_t len, unsigned long flags) -{ - struct iop_adma_chan *iop_chan = to_iop_adma_chan(chan); - struct iop_adma_desc_slot *sw_desc, *grp_start; - int slot_cnt, slots_per_op; - - if (unlikely(!len)) - return NULL; - BUG_ON(len > IOP_ADMA_MAX_BYTE_COUNT); - - dev_dbg(iop_chan->device->common.dev, "%s len: %u\n", - __func__, len); - - spin_lock_bh(&iop_chan->lock); - slot_cnt = iop_chan_memset_slot_count(len, &slots_per_op); - sw_desc = iop_adma_alloc_slots(iop_chan, slot_cnt, slots_per_op); - if (sw_desc) { - grp_start = sw_desc->group_head; - iop_desc_init_memset(grp_start, flags); - iop_desc_set_byte_count(grp_start, iop_chan, len); - iop_desc_set_block_fill_val(grp_start, value); - iop_desc_set_dest_addr(grp_start, iop_chan, dma_dest); - sw_desc->unmap_src_cnt = 1; - sw_desc->unmap_len = len; - sw_desc->async_tx.flags = flags; - } - spin_unlock_bh(&iop_chan->lock); - - return sw_desc ? &sw_desc->async_tx : NULL; -} - -static struct dma_async_tx_descriptor * iop_adma_prep_dma_xor(struct dma_chan *chan, dma_addr_t dma_dest, dma_addr_t *dma_src, unsigned int src_cnt, size_t len, unsigned long flags) @@ -1176,33 +1143,6 @@ iop_adma_xor_val_self_test(struct iop_adma_device *device) goto free_resources; } - /* test memset */ - dma_addr = dma_map_page(dma_chan->device->dev, dest, 0, - PAGE_SIZE, DMA_FROM_DEVICE); - tx = iop_adma_prep_dma_memset(dma_chan, dma_addr, 0, PAGE_SIZE, - DMA_PREP_INTERRUPT | DMA_CTRL_ACK); - - cookie = iop_adma_tx_submit(tx); - iop_adma_issue_pending(dma_chan); - msleep(8); - - if (iop_adma_status(dma_chan, cookie, NULL) != DMA_SUCCESS) { - dev_err(dma_chan->device->dev, - "Self-test memset timed out, disabling\n"); - err = -ENODEV; - goto free_resources; - } - - for (i = 0; i < PAGE_SIZE/sizeof(u32); i++) { - u32 *ptr = page_address(dest); - if (ptr[i]) { - dev_err(dma_chan->device->dev, - "Self-test memset failed compare, disabling\n"); - err = -ENODEV; - goto free_resources; - } - } - /* test for non-zero parity sum */ zero_sum_result = 0; for (i = 0; i < IOP_ADMA_NUM_SRC_TEST + 1; i++) @@ -1487,8 +1427,6 @@ static int iop_adma_probe(struct platform_device *pdev) /* set prep routines based on capability */ if (dma_has_cap(DMA_MEMCPY, dma_dev->cap_mask)) dma_dev->device_prep_dma_memcpy = iop_adma_prep_dma_memcpy; - if (dma_has_cap(DMA_MEMSET, dma_dev->cap_mask)) - dma_dev->device_prep_dma_memset = iop_adma_prep_dma_memset; if (dma_has_cap(DMA_XOR, dma_dev->cap_mask)) { dma_dev->max_xor = iop_adma_get_max_xor(); dma_dev->device_prep_dma_xor = iop_adma_prep_dma_xor; @@ -1556,8 +1494,7 @@ static int iop_adma_probe(struct platform_device *pdev) goto err_free_iop_chan; } - if (dma_has_cap(DMA_XOR, dma_dev->cap_mask) || - dma_has_cap(DMA_MEMSET, dma_dev->cap_mask)) { + if (dma_has_cap(DMA_XOR, dma_dev->cap_mask)) { ret = iop_adma_xor_val_self_test(adev); dev_dbg(&pdev->dev, "xor self test returned %d\n", ret); if (ret) @@ -1584,7 +1521,6 @@ static int iop_adma_probe(struct platform_device *pdev) dma_has_cap(DMA_PQ_VAL, dma_dev->cap_mask) ? "pq_val " : "", dma_has_cap(DMA_XOR, dma_dev->cap_mask) ? "xor " : "", dma_has_cap(DMA_XOR_VAL, dma_dev->cap_mask) ? "xor_val " : "", - dma_has_cap(DMA_MEMSET, dma_dev->cap_mask) ? "fill " : "", dma_has_cap(DMA_MEMCPY, dma_dev->cap_mask) ? "cpy " : "", dma_has_cap(DMA_INTERRUPT, dma_dev->cap_mask) ? "intr " : ""); |