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authorDave Jiang <dave.jiang@intel.com>2017-08-21 10:23:13 -0700
committerVinod Koul <vinod.koul@intel.com>2017-08-22 09:22:11 +0530
commitc678fa66341c7b82a57cfed0ba3656162e970f99 (patch)
tree1573dfbd3e1afb9ea57a8231183f836e51e12c43 /drivers/dma/ste_dma40.c
parent61b5f54d8c1fafb97dace958a54cdd72b37138c3 (diff)
downloadlinux-c678fa66341c7b82a57cfed0ba3656162e970f99.tar.bz2
dmaengine: remove DMA_SG as it is dead code in kernel
There are no in kernel consumers for DMA_SG op. Removing operation, dead code, and test code in dmatest. Signed-off-by: Dave Jiang <dave.jiang@intel.com> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Cc: Gary Hook <gary.hook@amd.com> Cc: Ludovic Desroches <ludovic.desroches@microchip.com> Cc: Kedareswara rao Appana <appana.durga.rao@xilinx.com> Cc: Li Yang <leoyang.li@nxp.com> Cc: Michal Simek <michal.simek@xilinx.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Diffstat (limited to 'drivers/dma/ste_dma40.c')
-rw-r--r--drivers/dma/ste_dma40.c18
1 files changed, 0 insertions, 18 deletions
diff --git a/drivers/dma/ste_dma40.c b/drivers/dma/ste_dma40.c
index c3052fbfd092..97e1d8b00e22 100644
--- a/drivers/dma/ste_dma40.c
+++ b/drivers/dma/ste_dma40.c
@@ -2485,19 +2485,6 @@ static struct dma_async_tx_descriptor *d40_prep_memcpy(struct dma_chan *chan,
}
static struct dma_async_tx_descriptor *
-d40_prep_memcpy_sg(struct dma_chan *chan,
- struct scatterlist *dst_sg, unsigned int dst_nents,
- struct scatterlist *src_sg, unsigned int src_nents,
- unsigned long dma_flags)
-{
- if (dst_nents != src_nents)
- return NULL;
-
- return d40_prep_sg(chan, src_sg, dst_sg, src_nents,
- DMA_MEM_TO_MEM, dma_flags);
-}
-
-static struct dma_async_tx_descriptor *
d40_prep_slave_sg(struct dma_chan *chan, struct scatterlist *sgl,
unsigned int sg_len, enum dma_transfer_direction direction,
unsigned long dma_flags, void *context)
@@ -2821,9 +2808,6 @@ static void d40_ops_init(struct d40_base *base, struct dma_device *dev)
dev->copy_align = DMAENGINE_ALIGN_4_BYTES;
}
- if (dma_has_cap(DMA_SG, dev->cap_mask))
- dev->device_prep_dma_sg = d40_prep_memcpy_sg;
-
if (dma_has_cap(DMA_CYCLIC, dev->cap_mask))
dev->device_prep_dma_cyclic = dma40_prep_dma_cyclic;
@@ -2865,7 +2849,6 @@ static int __init d40_dmaengine_init(struct d40_base *base,
dma_cap_zero(base->dma_memcpy.cap_mask);
dma_cap_set(DMA_MEMCPY, base->dma_memcpy.cap_mask);
- dma_cap_set(DMA_SG, base->dma_memcpy.cap_mask);
d40_ops_init(base, &base->dma_memcpy);
@@ -2883,7 +2866,6 @@ static int __init d40_dmaengine_init(struct d40_base *base,
dma_cap_zero(base->dma_both.cap_mask);
dma_cap_set(DMA_SLAVE, base->dma_both.cap_mask);
dma_cap_set(DMA_MEMCPY, base->dma_both.cap_mask);
- dma_cap_set(DMA_SG, base->dma_both.cap_mask);
dma_cap_set(DMA_CYCLIC, base->dma_slave.cap_mask);
d40_ops_init(base, &base->dma_both);