DaVinci: EDMA: Fix bug in edma_free_cont_slots API
In the edma_free_cont_slots API, the variable slot was being modified
and then used in the for loop.
This results in incorrect behaviour when the API is used.
Signed-off-by: Sandeep Paulraj <s-paulraj@ti.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
diff --git a/arch/arm/mach-davinci/dma.c b/arch/arm/mach-davinci/dma.c
index f2e57d2..89ce3e1 100644
--- a/arch/arm/mach-davinci/dma.c
+++ b/arch/arm/mach-davinci/dma.c
@@ -813,7 +813,7 @@
*/
int edma_free_cont_slots(unsigned slot, int count)
{
- unsigned ctlr;
+ unsigned ctlr, slot_to_free;
int i;
ctlr = EDMA_CTLR(slot);
@@ -826,11 +826,11 @@
for (i = slot; i < slot + count; ++i) {
ctlr = EDMA_CTLR(i);
- slot = EDMA_CHAN_SLOT(i);
+ slot_to_free = EDMA_CHAN_SLOT(i);
- memcpy_toio(edmacc_regs_base[ctlr] + PARM_OFFSET(slot),
+ memcpy_toio(edmacc_regs_base[ctlr] + PARM_OFFSET(slot_to_free),
&dummy_paramset, PARM_SIZE);
- clear_bit(slot, edma_info[ctlr]->edma_inuse);
+ clear_bit(slot_to_free, edma_info[ctlr]->edma_inuse);
}
return 0;