DMAENGINE: DMA40 fix for allocation of logical channel 0
Fix for allocation failure of logical channel when event line
happens to be number 0.
Signed-off-by: Marcin Mielczarczyk <marcin.mielczarczyk@tieto.com>
Signed-off-by: Linus Walleij <linus.walleij@stericsson.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
diff --git a/drivers/dma/ste_dma40.c b/drivers/dma/ste_dma40.c
index 16a7d2b..81fec95 100644
--- a/drivers/dma/ste_dma40.c
+++ b/drivers/dma/ste_dma40.c
@@ -1039,11 +1039,11 @@
}
static bool d40_alloc_mask_set(struct d40_phy_res *phy, bool is_src,
- int log_event_line)
+ int log_event_line, bool is_log)
{
unsigned long flags;
spin_lock_irqsave(&phy->lock, flags);
- if (!log_event_line) {
+ if (!is_log) {
/* Physical interrupts are masked per physical full channel */
if (phy->allocated_src == D40_ALLOC_FREE &&
phy->allocated_dst == D40_ALLOC_FREE) {
@@ -1161,15 +1161,16 @@
/* Find physical half channel */
for (i = 0; i < d40c->base->num_phy_chans; i++) {
- if (d40_alloc_mask_set(&phys[i], is_src, 0))
+ if (d40_alloc_mask_set(&phys[i], is_src,
+ 0, is_log))
goto found_phy;
}
} else
for (j = 0; j < d40c->base->num_phy_chans; j += 8) {
int phy_num = j + event_group * 2;
for (i = phy_num; i < phy_num + 2; i++) {
- if (d40_alloc_mask_set(&phys[i],
- is_src, 0))
+ if (d40_alloc_mask_set(&phys[i], is_src,
+ 0, is_log))
goto found_phy;
}
}
@@ -1193,13 +1194,13 @@
if (is_src) {
for (i = phy_num; i < phy_num + 2; i++) {
if (d40_alloc_mask_set(&phys[i], is_src,
- event_line))
+ event_line, is_log))
goto found_log;
}
} else {
for (i = phy_num + 1; i >= phy_num; i--) {
if (d40_alloc_mask_set(&phys[i], is_src,
- event_line))
+ event_line, is_log))
goto found_log;
}
}