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dmaengine: idma64: use local variable to index descriptor

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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@linux.intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
This commit is contained in:
Andy Shevchenko 2015-11-17 13:37:10 +02:00 committed by Vinod Koul
parent ac02979413
commit 390c49f717
1 changed files with 3 additions and 3 deletions
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6
drivers/dma/idma64.c
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@ -274,10 +274,10 @@ static void idma64_desc_fill(struct idma64_chan *idma64c,
struct idma64_desc *desc) struct idma64_desc *desc)
{ {
struct dma_slave_config *config = &idma64c->config; 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; struct idma64_lli *lli = hw->lli;
u64 llp = 0; u64 llp = 0;
unsigned int i = desc->ndesc;
/* Fill the hardware descriptors and link them to a list */ /* Fill the hardware descriptors and link them to a list */
do { do {
@ -287,7 +287,7 @@ static void idma64_desc_fill(struct idma64_chan *idma64c,
desc->length += hw->len; desc->length += hw->len;
} while (i); } while (i);
/* Trigger interrupt after last block */ /* Trigger an interrupt after the last block is transfered */
lli->ctllo |= IDMA64C_CTLL_INT_EN; lli->ctllo |= IDMA64C_CTLL_INT_EN;
} }