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dmaengine fixes for 4.9-rc6 

Some driver fixes which we pending in my tree:
 o return error code fix in edma driver
 o Kconfig fix for genric allocator in mmp_tdma
 o fix uninitialized value in sun6i
 o Runtime pm fixes for cppi
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Merge tag 'dmaengine-fix-4.9-rc6' of git://git.infradead.org/users/vkoul/slave-dma

Pull dmaengine fixes from Vinod Koul:
 "Some driver fixes which we pending in my tree:

   - return error code fix in edma driver
   - Kconfig fix for genric allocator in mmp_tdma
   - fix uninitialized value in sun6i
   - Runtime pm fixes for cppi"

* tag 'dmaengine-fix-4.9-rc6' of git://git.infradead.org/users/vkoul/slave-dma:
  dmaengine: cppi41: More PM runtime fixes
  dmaengine: cpp41: Fix handling of error path
  dmaengine: cppi41: Fix unpaired pm runtime when only a USB hub is connected
  dmaengine: cppi41: Fix list not empty warning on module removal
  dmaengine: sun6i: fix the uninitialized value for v_lli
  dmaengine: mmp_tdma: add missing select GENERIC_ALLOCATOR in Kconfig
  dmaengine: edma: Fix error return code in edma_alloc_chan_resources()
This commit is contained in:
Linus Torvalds 2016-11-19 11:05:47 -08:00
parent 20afa6e2f9 d5afc1b68a
commit eab8d4bc0a
4 changed files with 29 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
drivers/dma/Kconfig
View File

@ -306,6 +306,7 @@ config MMP_TDMA
depends on ARCH_MMP || COMPILE_TEST
select DMA_ENGINE
select MMP_SRAM if ARCH_MMP
select GENERIC_ALLOCATOR
help
Support the MMP Two-Channel DMA engine.
This engine used for MMP Audio DMA and pxa910 SQU.

31
drivers/dma/cppi41.c
View File

@ -317,6 +317,12 @@ static irqreturn_t cppi41_irq(int irq, void *data)
while (val) {
u32 desc, len;
int error;
error = pm_runtime_get(cdd->ddev.dev);
if (error < 0)
dev_err(cdd->ddev.dev, "%s pm runtime get: %i\n",
__func__, error);
q_num = __fls(val);
val &= ~(1 << q_num);
@ -338,7 +344,6 @@ static irqreturn_t cppi41_irq(int irq, void *data)
dma_cookie_complete(&c->txd);
dmaengine_desc_get_callback_invoke(&c->txd, NULL);
/* Paired with cppi41_dma_issue_pending */
pm_runtime_mark_last_busy(cdd->ddev.dev);
pm_runtime_put_autosuspend(cdd->ddev.dev);
}
@ -362,8 +367,13 @@ static int cppi41_dma_alloc_chan_resources(struct dma_chan *chan)
int error;
error = pm_runtime_get_sync(cdd->ddev.dev);
if (error < 0)
if (error < 0) {
dev_err(cdd->ddev.dev, "%s pm runtime get: %i\n",
__func__, error);
pm_runtime_put_noidle(cdd->ddev.dev);
return error;
}
dma_cookie_init(chan);
dma_async_tx_descriptor_init(&c->txd, chan);
@ -385,8 +395,11 @@ static void cppi41_dma_free_chan_resources(struct dma_chan *chan)
int error;
error = pm_runtime_get_sync(cdd->ddev.dev);
if (error < 0)
if (error < 0) {
pm_runtime_put_noidle(cdd->ddev.dev);
return;
}
WARN_ON(!list_empty(&cdd->pending));
@ -460,9 +473,9 @@ static void cppi41_dma_issue_pending(struct dma_chan *chan)
struct cppi41_dd *cdd = c->cdd;
int error;
/* PM runtime paired with dmaengine_desc_get_callback_invoke */
error = pm_runtime_get(cdd->ddev.dev);
if ((error != -EINPROGRESS) && error < 0) {
pm_runtime_put_noidle(cdd->ddev.dev);
dev_err(cdd->ddev.dev, "Failed to pm_runtime_get: %i\n",
error);
@ -473,6 +486,9 @@ static void cppi41_dma_issue_pending(struct dma_chan *chan)
push_desc_queue(c);
else
pending_desc(c);
pm_runtime_mark_last_busy(cdd->ddev.dev);
pm_runtime_put_autosuspend(cdd->ddev.dev);
}
static u32 get_host_pd0(u32 length)
@ -1059,8 +1075,8 @@ err_chans:
deinit_cppi41(dev, cdd);
err_init_cppi:
pm_runtime_dont_use_autosuspend(dev);
pm_runtime_put_sync(dev);
err_get_sync:
pm_runtime_put_sync(dev);
pm_runtime_disable(dev);
iounmap(cdd->usbss_mem);
iounmap(cdd->ctrl_mem);
@ -1072,7 +1088,12 @@ err_get_sync:
static int cppi41_dma_remove(struct platform_device *pdev)
{
struct cppi41_dd *cdd = platform_get_drvdata(pdev);
int error;
error = pm_runtime_get_sync(&pdev->dev);
if (error < 0)
dev_err(&pdev->dev, "%s could not pm_runtime_get: %i\n",
__func__, error);
of_dma_controller_free(pdev->dev.of_node);
dma_async_device_unregister(&cdd->ddev);

1
drivers/dma/edma.c
View File

@ -1628,6 +1628,7 @@ static int edma_alloc_chan_resources(struct dma_chan *chan)
if (echan->slot[0] < 0) {
dev_err(dev, "Entry slot allocation failed for channel %u\n",
EDMA_CHAN_SLOT(echan->ch_num));
ret = echan->slot[0];
goto err_slot;
}

2
drivers/dma/sun6i-dma.c
View File

@ -578,7 +578,7 @@ static struct dma_async_tx_descriptor *sun6i_dma_prep_dma_memcpy(
burst = convert_burst(8);
width = convert_buswidth(DMA_SLAVE_BUSWIDTH_4_BYTES);
v_lli->cfg |= DMA_CHAN_CFG_SRC_DRQ(DRQ_SDRAM) |
v_lli->cfg = DMA_CHAN_CFG_SRC_DRQ(DRQ_SDRAM) |
DMA_CHAN_CFG_DST_DRQ(DRQ_SDRAM) |
DMA_CHAN_CFG_DST_LINEAR_MODE |
DMA_CHAN_CFG_SRC_LINEAR_MODE |