diff options
| author | Marcin Mielczarczyk <marcin.mielczarczyk@tieto.com> | 2010-05-18 00:41:21 +0200 |
|---|---|---|
| committer | Dan Williams <dan.j.williams@intel.com> | 2010-05-18 00:45:06 +0200 |
| commit | 4aed79b2818e7330b5d00143e4c20bc6555df91f (patch) | |
| tree | af69dd8e9a09ea2eb1df8a58e67d36cf3a77cb1f /drivers/dma/ste_dma40.c | |
| parent | DMAENGINE: DMA40 support paused channel status (diff) | |
| download | linux-4aed79b2818e7330b5d00143e4c20bc6555df91f.tar.xz linux-4aed79b2818e7330b5d00143e4c20bc6555df91f.zip | |
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>
Diffstat (limited to 'drivers/dma/ste_dma40.c')
| -rw-r--r-- | drivers/dma/ste_dma40.c | 15 |
1 files changed, 8 insertions, 7 deletions
diff --git a/drivers/dma/ste_dma40.c b/drivers/dma/ste_dma40.c index 16a7d2b605ed..81fec95312b6 100644 --- a/drivers/dma/ste_dma40.c +++ b/drivers/dma/ste_dma40.c @@ -1039,11 +1039,11 @@ static int d40_validate_conf(struct d40_chan *d40c, } 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 @@ static int d40_allocate_channel(struct d40_chan *d40c) /* 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 @@ found_phy: 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; } } |