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authorVinod Koul <vinod.koul@linux.intel.com>2012-04-25 15:28:54 +0530
committerVinod Koul <vinod.koul@linux.intel.com>2012-04-25 15:28:54 +0530
commit56cbb3dd48623c01e7c589d29da743d486c95a58 (patch)
tree66626f63f4effa03d8d5b14f0ea40b834e4195ae /drivers/dma
parentaffa115ed365d646ad1a8cc7d2d063b8181cce37 (diff)
parent88c08a3fba9954ce0ec3e1eab07c498a419ad7e3 (diff)
downloadlinux-56cbb3dd48623c01e7c589d29da743d486c95a58.tar.bz2
Merge branch 'fixes' into next
Diffstat (limited to 'drivers/dma')
-rw-r--r--drivers/dma/amba-pl08x.c1
-rw-r--r--drivers/dma/pl330.c25
2 files changed, 16 insertions, 10 deletions
diff --git a/drivers/dma/amba-pl08x.c b/drivers/dma/amba-pl08x.c
index 629250e36d3b..e7d5550266e0 100644
--- a/drivers/dma/amba-pl08x.c
+++ b/drivers/dma/amba-pl08x.c
@@ -1433,6 +1433,7 @@ static int pl08x_control(struct dma_chan *chan, enum dma_ctrl_cmd cmd,
* signal
*/
release_phy_channel(plchan);
+ plchan->phychan_hold = 0;
}
/* Dequeue jobs and free LLIs */
if (plchan->at) {
diff --git a/drivers/dma/pl330.c b/drivers/dma/pl330.c
index 282caf118be8..2ee6e23930ad 100644
--- a/drivers/dma/pl330.c
+++ b/drivers/dma/pl330.c
@@ -2225,12 +2225,9 @@ static inline void free_desc_list(struct list_head *list)
{
struct dma_pl330_dmac *pdmac;
struct dma_pl330_desc *desc;
- struct dma_pl330_chan *pch;
+ struct dma_pl330_chan *pch = NULL;
unsigned long flags;
- if (list_empty(list))
- return;
-
/* Finish off the work list */
list_for_each_entry(desc, list, node) {
dma_async_tx_callback callback;
@@ -2247,6 +2244,10 @@ static inline void free_desc_list(struct list_head *list)
desc->pchan = NULL;
}
+ /* pch will be unset if list was empty */
+ if (!pch)
+ return;
+
pdmac = pch->dmac;
spin_lock_irqsave(&pdmac->pool_lock, flags);
@@ -2257,12 +2258,9 @@ static inline void free_desc_list(struct list_head *list)
static inline void handle_cyclic_desc_list(struct list_head *list)
{
struct dma_pl330_desc *desc;
- struct dma_pl330_chan *pch;
+ struct dma_pl330_chan *pch = NULL;
unsigned long flags;
- if (list_empty(list))
- return;
-
list_for_each_entry(desc, list, node) {
dma_async_tx_callback callback;
@@ -2274,6 +2272,10 @@ static inline void handle_cyclic_desc_list(struct list_head *list)
callback(desc->txd.callback_param);
}
+ /* pch will be unset if list was empty */
+ if (!pch)
+ return;
+
spin_lock_irqsave(&pch->lock, flags);
list_splice_tail_init(list, &pch->work_list);
spin_unlock_irqrestore(&pch->lock, flags);
@@ -2926,8 +2928,11 @@ pl330_probe(struct amba_device *adev, const struct amba_id *id)
INIT_LIST_HEAD(&pd->channels);
/* Initialize channel parameters */
- num_chan = max(pdat ? pdat->nr_valid_peri : (u8)pi->pcfg.num_peri,
- (u8)pi->pcfg.num_chan);
+ if (pdat)
+ num_chan = max_t(int, pdat->nr_valid_peri, pi->pcfg.num_chan);
+ else
+ num_chan = max_t(int, pi->pcfg.num_peri, pi->pcfg.num_chan);
+
pdmac->peripherals = kzalloc(num_chan * sizeof(*pch), GFP_KERNEL);
for (i = 0; i < num_chan; i++) {