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authorSergei Shtylyov <sergei.shtylyov@cogentembedded.com>2013-09-26 02:31:37 +0400
committerVinod Koul <vinod.koul@intel.com>2013-10-11 05:54:36 +0400
commit08d08bcdee30d3a28426bd60dfbdae44b36250bc (patch)
treebd2ab50c2c4deb05b5f5550051c46b6570b57649 /drivers
parentcdeb5c033f0389c44e5b36cafd623bdf44bbe25c (diff)
downloadlinux-08d08bcdee30d3a28426bd60dfbdae44b36250bc.tar.xz
rcar-hpbdma: add parameter to set_slave() method
Commit 4981c4dc194efb18f0e9a02f1b43e926f2f0d2bb (DMA: shdma: switch DT mode to use configuration data from a match table) added a new parameter to set_slave() method but unfortunately got merged later than commit c4f6c41ba790bbbfcebb4c47a (dma: add driver for R-Car HPB-DMAC), so that the HPB-DMAC driver retained the old prototype which caused this warning: drivers/dma/sh/rcar-hpbdma.c:485: warning: initialization from incompatible pointer type The newly added parameter is used to override DMA slave address from 'struct hpb_dmae_slave_config', so we have to add the 'slave_addr' field to 'struct hpb_dmae_chan', conditionally assign it in set_slave() method, and return in slave_addr() method. Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com> Tested-by: Simon Horman <horms+renesas@verge.net.au> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/dma/sh/rcar-hpbdma.c7
1 files changed, 5 insertions, 2 deletions
diff --git a/drivers/dma/sh/rcar-hpbdma.c b/drivers/dma/sh/rcar-hpbdma.c
index b2f50d8bd755..ebad84591a6e 100644
--- a/drivers/dma/sh/rcar-hpbdma.c
+++ b/drivers/dma/sh/rcar-hpbdma.c
@@ -93,6 +93,7 @@ struct hpb_dmae_chan {
void __iomem *base;
const struct hpb_dmae_slave_config *cfg;
char dev_id[16]; /* unique name per DMAC of channel */
+ dma_addr_t slave_addr;
};
struct hpb_dmae_device {
@@ -445,7 +446,8 @@ hpb_dmae_alloc_chan_resources(struct hpb_dmae_chan *hpb_chan,
return 0;
}
-static int hpb_dmae_set_slave(struct shdma_chan *schan, int slave_id, bool try)
+static int hpb_dmae_set_slave(struct shdma_chan *schan, int slave_id,
+ dma_addr_t slave_addr, bool try)
{
struct hpb_dmae_chan *chan = to_chan(schan);
const struct hpb_dmae_slave_config *sc =
@@ -456,6 +458,7 @@ static int hpb_dmae_set_slave(struct shdma_chan *schan, int slave_id, bool try)
if (try)
return 0;
chan->cfg = sc;
+ chan->slave_addr = slave_addr ? : sc->addr;
return hpb_dmae_alloc_chan_resources(chan, sc);
}
@@ -467,7 +470,7 @@ static dma_addr_t hpb_dmae_slave_addr(struct shdma_chan *schan)
{
struct hpb_dmae_chan *chan = to_chan(schan);
- return chan->cfg->addr;
+ return chan->slave_addr;
}
static struct shdma_desc *hpb_dmae_embedded_desc(void *buf, int i)