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dmaengine fixes for v6.3

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- apple admac driver fixes for current_tx, src_addr_widths and global'
   interrupt flags handling
 - xdma kerneldoc fix
 - core fix for use of devm_add_action_or_reset
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Merge tag 'dmaengine-fix-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/dmaengine

Pull dmaengine fixes from Vinod Koul:
 "A couple of fixes in apple driver, core and kernedoc fix for dmaengine
  subsystem:

   - apple admac driver fixes for current_tx, src_addr_widths and
     global' interrupt flags handling

   - xdma kerneldoc fix

   - core fix for use of devm_add_action_or_reset"

* tag 'dmaengine-fix-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/dmaengine:
  dmaengine: apple-admac: Fix 'current_tx' not getting freed
  dmaengine: apple-admac: Set src_addr_widths capability
  dmaengine: apple-admac: Handle 'global' interrupt flags
  dmaengine: xilinx: xdma: Fix some kernel-doc comments
  dmaengine: Actually use devm_add_action_or_reset()
This commit is contained in:
Linus Torvalds 2023-04-12 17:20:55 -07:00
commit b05e0f5e74
3 changed files with 19 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

20
drivers/dma/apple-admac.c
View File

@ -75,6 +75,7 @@
#define REG_TX_INTSTATE(idx) (0x0030 + (idx) * 4)
#define REG_RX_INTSTATE(idx) (0x0040 + (idx) * 4)
#define REG_GLOBAL_INTSTATE(idx) (0x0050 + (idx) * 4)
#define REG_CHAN_INTSTATUS(ch, idx) (0x8010 + (ch) * 0x200 + (idx) * 4)
#define REG_CHAN_INTMASK(ch, idx) (0x8020 + (ch) * 0x200 + (idx) * 4)
@ -511,7 +512,10 @@ static int admac_terminate_all(struct dma_chan *chan)
admac_stop_chan(adchan);
admac_reset_rings(adchan);
adchan->current_tx = NULL;
if (adchan->current_tx) {
list_add_tail(&adchan->current_tx->node, &adchan->to_free);
adchan->current_tx = NULL;
}
/*
* Descriptors can only be freed after the tasklet
* has been killed (in admac_synchronize).
@ -672,13 +676,14 @@ static void admac_handle_chan_int(struct admac_data *ad, int no)
static irqreturn_t admac_interrupt(int irq, void *devid)
{
struct admac_data *ad = devid;
u32 rx_intstate, tx_intstate;
u32 rx_intstate, tx_intstate, global_intstate;
int i;
rx_intstate = readl_relaxed(ad->base + REG_RX_INTSTATE(ad->irq_index));
tx_intstate = readl_relaxed(ad->base + REG_TX_INTSTATE(ad->irq_index));
global_intstate = readl_relaxed(ad->base + REG_GLOBAL_INTSTATE(ad->irq_index));
if (!tx_intstate && !rx_intstate)
if (!tx_intstate && !rx_intstate && !global_intstate)
return IRQ_NONE;
for (i = 0; i < ad->nchannels; i += 2) {
@ -693,6 +698,12 @@ static irqreturn_t admac_interrupt(int irq, void *devid)
rx_intstate >>= 1;
}
if (global_intstate) {
dev_warn(ad->dev, "clearing unknown global interrupt flag: %x\n",
global_intstate);
writel_relaxed(~(u32) 0, ad->base + REG_GLOBAL_INTSTATE(ad->irq_index));
}
return IRQ_HANDLED;
}
@ -850,6 +861,9 @@ static int admac_probe(struct platform_device *pdev)
dma->directions = BIT(DMA_MEM_TO_DEV) | BIT(DMA_DEV_TO_MEM);
dma->residue_granularity = DMA_RESIDUE_GRANULARITY_BURST;
dma->src_addr_widths = BIT(DMA_SLAVE_BUSWIDTH_1_BYTE) |
BIT(DMA_SLAVE_BUSWIDTH_2_BYTES) |
BIT(DMA_SLAVE_BUSWIDTH_4_BYTES);
dma->dst_addr_widths = BIT(DMA_SLAVE_BUSWIDTH_1_BYTE) |
BIT(DMA_SLAVE_BUSWIDTH_2_BYTES) |
BIT(DMA_SLAVE_BUSWIDTH_4_BYTES);

2
drivers/dma/dmaengine.c
View File

@ -1342,7 +1342,7 @@ int dmaenginem_async_device_register(struct dma_device *device)
if (ret)
return ret;
return devm_add_action(device->dev, dmaenginem_async_device_unregister, device);
return devm_add_action_or_reset(device->dev, dmaenginem_async_device_unregister, device);
}
EXPORT_SYMBOL(dmaenginem_async_device_register);

2
drivers/dma/xilinx/xdma.c
View File

@ -277,7 +277,7 @@ xdma_alloc_desc(struct xdma_chan *chan, u32 desc_num)
/**
* xdma_xfer_start - Start DMA transfer
* @xdma_chan: DMA channel pointer
* @xchan: DMA channel pointer
*/
static int xdma_xfer_start(struct xdma_chan *xchan)
{