diff options
author | David S. Miller <davem@davemloft.net> | 2013-10-23 16:28:39 -0400 |
---|---|---|
committer | David S. Miller <davem@davemloft.net> | 2013-10-23 16:49:34 -0400 |
commit | c3fa32b9764dc45dcf8a2231b1c110abc4a63e0b (patch) | |
tree | 6cf2896a77b65bec64284681e1c3851eb3263e09 /drivers/dma/imx-dma.c | |
parent | 34d92d5315b64a3e5292b7e9511c1bb617227fb6 (diff) | |
parent | 320437af954cbe66478f1f5e8b34cb5a8d072191 (diff) |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Conflicts:
drivers/net/usb/qmi_wwan.c
include/net/dst.h
Trivial merge conflicts, both were overlapping changes.
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/dma/imx-dma.c')
-rw-r--r-- | drivers/dma/imx-dma.c | 31 |
1 files changed, 15 insertions, 16 deletions
diff --git a/drivers/dma/imx-dma.c b/drivers/dma/imx-dma.c index 78f8ca5fccee..55852c026791 100644 --- a/drivers/dma/imx-dma.c +++ b/drivers/dma/imx-dma.c | |||
@@ -437,17 +437,18 @@ static void dma_irq_handle_channel(struct imxdma_channel *imxdmac) | |||
437 | struct imxdma_engine *imxdma = imxdmac->imxdma; | 437 | struct imxdma_engine *imxdma = imxdmac->imxdma; |
438 | int chno = imxdmac->channel; | 438 | int chno = imxdmac->channel; |
439 | struct imxdma_desc *desc; | 439 | struct imxdma_desc *desc; |
440 | unsigned long flags; | ||
440 | 441 | ||
441 | spin_lock(&imxdma->lock); | 442 | spin_lock_irqsave(&imxdma->lock, flags); |
442 | if (list_empty(&imxdmac->ld_active)) { | 443 | if (list_empty(&imxdmac->ld_active)) { |
443 | spin_unlock(&imxdma->lock); | 444 | spin_unlock_irqrestore(&imxdma->lock, flags); |
444 | goto out; | 445 | goto out; |
445 | } | 446 | } |
446 | 447 | ||
447 | desc = list_first_entry(&imxdmac->ld_active, | 448 | desc = list_first_entry(&imxdmac->ld_active, |
448 | struct imxdma_desc, | 449 | struct imxdma_desc, |
449 | node); | 450 | node); |
450 | spin_unlock(&imxdma->lock); | 451 | spin_unlock_irqrestore(&imxdma->lock, flags); |
451 | 452 | ||
452 | if (desc->sg) { | 453 | if (desc->sg) { |
453 | u32 tmp; | 454 | u32 tmp; |
@@ -519,7 +520,6 @@ static int imxdma_xfer_desc(struct imxdma_desc *d) | |||
519 | { | 520 | { |
520 | struct imxdma_channel *imxdmac = to_imxdma_chan(d->desc.chan); | 521 | struct imxdma_channel *imxdmac = to_imxdma_chan(d->desc.chan); |
521 | struct imxdma_engine *imxdma = imxdmac->imxdma; | 522 | struct imxdma_engine *imxdma = imxdmac->imxdma; |
522 | unsigned long flags; | ||
523 | int slot = -1; | 523 | int slot = -1; |
524 | int i; | 524 | int i; |
525 | 525 | ||
@@ -527,7 +527,6 @@ static int imxdma_xfer_desc(struct imxdma_desc *d) | |||
527 | switch (d->type) { | 527 | switch (d->type) { |
528 | case IMXDMA_DESC_INTERLEAVED: | 528 | case IMXDMA_DESC_INTERLEAVED: |
529 | /* Try to get a free 2D slot */ | 529 | /* Try to get a free 2D slot */ |
530 | spin_lock_irqsave(&imxdma->lock, flags); | ||
531 | for (i = 0; i < IMX_DMA_2D_SLOTS; i++) { | 530 | for (i = 0; i < IMX_DMA_2D_SLOTS; i++) { |
532 | if ((imxdma->slots_2d[i].count > 0) && | 531 | if ((imxdma->slots_2d[i].count > 0) && |
533 | ((imxdma->slots_2d[i].xsr != d->x) || | 532 | ((imxdma->slots_2d[i].xsr != d->x) || |
@@ -537,10 +536,8 @@ static int imxdma_xfer_desc(struct imxdma_desc *d) | |||
537 | slot = i; | 536 | slot = i; |
538 | break; | 537 | break; |
539 | } | 538 | } |
540 | if (slot < 0) { | 539 | if (slot < 0) |
541 | spin_unlock_irqrestore(&imxdma->lock, flags); | ||
542 | return -EBUSY; | 540 | return -EBUSY; |
543 | } | ||
544 | 541 | ||
545 | imxdma->slots_2d[slot].xsr = d->x; | 542 | imxdma->slots_2d[slot].xsr = d->x; |
546 | imxdma->slots_2d[slot].ysr = d->y; | 543 | imxdma->slots_2d[slot].ysr = d->y; |
@@ -549,7 +546,6 @@ static int imxdma_xfer_desc(struct imxdma_desc *d) | |||
549 | 546 | ||
550 | imxdmac->slot_2d = slot; | 547 | imxdmac->slot_2d = slot; |
551 | imxdmac->enabled_2d = true; | 548 | imxdmac->enabled_2d = true; |
552 | spin_unlock_irqrestore(&imxdma->lock, flags); | ||
553 | 549 | ||
554 | if (slot == IMX_DMA_2D_SLOT_A) { | 550 | if (slot == IMX_DMA_2D_SLOT_A) { |
555 | d->config_mem &= ~CCR_MSEL_B; | 551 | d->config_mem &= ~CCR_MSEL_B; |
@@ -625,18 +621,17 @@ static void imxdma_tasklet(unsigned long data) | |||
625 | struct imxdma_channel *imxdmac = (void *)data; | 621 | struct imxdma_channel *imxdmac = (void *)data; |
626 | struct imxdma_engine *imxdma = imxdmac->imxdma; | 622 | struct imxdma_engine *imxdma = imxdmac->imxdma; |
627 | struct imxdma_desc *desc; | 623 | struct imxdma_desc *desc; |
624 | unsigned long flags; | ||
628 | 625 | ||
629 | spin_lock(&imxdma->lock); | 626 | spin_lock_irqsave(&imxdma->lock, flags); |
630 | 627 | ||
631 | if (list_empty(&imxdmac->ld_active)) { | 628 | if (list_empty(&imxdmac->ld_active)) { |
632 | /* Someone might have called terminate all */ | 629 | /* Someone might have called terminate all */ |
633 | goto out; | 630 | spin_unlock_irqrestore(&imxdma->lock, flags); |
631 | return; | ||
634 | } | 632 | } |
635 | desc = list_first_entry(&imxdmac->ld_active, struct imxdma_desc, node); | 633 | desc = list_first_entry(&imxdmac->ld_active, struct imxdma_desc, node); |
636 | 634 | ||
637 | if (desc->desc.callback) | ||
638 | desc->desc.callback(desc->desc.callback_param); | ||
639 | |||
640 | /* If we are dealing with a cyclic descriptor, keep it on ld_active | 635 | /* If we are dealing with a cyclic descriptor, keep it on ld_active |
641 | * and dont mark the descriptor as complete. | 636 | * and dont mark the descriptor as complete. |
642 | * Only in non-cyclic cases it would be marked as complete | 637 | * Only in non-cyclic cases it would be marked as complete |
@@ -663,7 +658,11 @@ static void imxdma_tasklet(unsigned long data) | |||
663 | __func__, imxdmac->channel); | 658 | __func__, imxdmac->channel); |
664 | } | 659 | } |
665 | out: | 660 | out: |
666 | spin_unlock(&imxdma->lock); | 661 | spin_unlock_irqrestore(&imxdma->lock, flags); |
662 | |||
663 | if (desc->desc.callback) | ||
664 | desc->desc.callback(desc->desc.callback_param); | ||
665 | |||
667 | } | 666 | } |
668 | 667 | ||
669 | static int imxdma_control(struct dma_chan *chan, enum dma_ctrl_cmd cmd, | 668 | static int imxdma_control(struct dma_chan *chan, enum dma_ctrl_cmd cmd, |
@@ -883,7 +882,7 @@ static struct dma_async_tx_descriptor *imxdma_prep_dma_cyclic( | |||
883 | kfree(imxdmac->sg_list); | 882 | kfree(imxdmac->sg_list); |
884 | 883 | ||
885 | imxdmac->sg_list = kcalloc(periods + 1, | 884 | imxdmac->sg_list = kcalloc(periods + 1, |
886 | sizeof(struct scatterlist), GFP_KERNEL); | 885 | sizeof(struct scatterlist), GFP_ATOMIC); |
887 | if (!imxdmac->sg_list) | 886 | if (!imxdmac->sg_list) |
888 | return NULL; | 887 | return NULL; |
889 | 888 | ||