Since a local variable contains the number of hardware desriptors at the
beginning of idma64_desc_fill() we may use it to index the last descriptor as
well.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
---
drivers/dma/idma64.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/drivers/dma/idma64.c b/drivers/dma/idma64.c
index b6c13f9..3cb7b2c 100644
--- a/drivers/dma/idma64.c
+++ b/drivers/dma/idma64.c
@@ -274,10 +274,10 @@ static void idma64_desc_fill(struct idma64_chan *idma64c,
struct idma64_desc *desc)
{
struct dma_slave_config *config = &idma64c->config;
- struct idma64_hw_desc *hw = &desc->hw[desc->ndesc - 1];
+ unsigned int i = desc->ndesc;
+ struct idma64_hw_desc *hw = &desc->hw[i - 1];
struct idma64_lli *lli = hw->lli;
u64 llp = 0;
- unsigned int i = desc->ndesc;
/* Fill the hardware descriptors and link them to a list */
do {
@@ -287,7 +287,7 @@ static void idma64_desc_fill(struct idma64_chan *idma64c,
desc->length += hw->len;
} while (i);
- /* Trigger interrupt after last block */
+ /* Trigger an interrupt after the last block is transfered */
lli->ctllo |= IDMA64C_CTLL_INT_EN;
}
--
2.6.2
--
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