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dmaengine fixes for v5.9-rc4

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Core:
  - drop ACPI CSRT table reference after using it
  - fix of_dma_router_xlate() error handling
 
 Drivers: Off fixes in:
  - idxd
  - at_hdmac
  - pl330
  - dw-edma
  - jz478
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Merge tag 'dmaengine-fix-5.9-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/dmaengine

Pull dmaengine fixes from Vinod Koul:
 "A couple of core fixes and odd driver fixes for dmaengine subsystem:

  Core:
   - drop ACPI CSRT table reference after using it
   - fix of_dma_router_xlate() error handling

  Drivers fixes in idxd, at_hdmac, pl330, dw-edma and jz478"

* tag 'dmaengine-fix-5.9-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/dmaengine:
  dmaengine: ti: k3-udma: Update rchan_oes_offset for am654 SYSFW ABI 3.0
  drivers/dma/dma-jz4780: Fix race condition between probe and irq handler
  dmaengine: dw-edma: Fix scatter-gather address calculation
  dmaengine: ti: k3-udma: Fix the TR initialization for prep_slave_sg
  dmaengine: pl330: Fix burst length if burst size is smaller than bus width
  dmaengine: at_hdmac: add missing kfree() call in at_dma_xlate()
  dmaengine: at_hdmac: add missing put_device() call in at_dma_xlate()
  dmaengine: at_hdmac: check return value of of_find_device_by_node() in at_dma_xlate()
  dmaengine: of-dma: Fix of_dma_router_xlate's of_dma_xlate handling
  dmaengine: idxd: reset states after device disable or reset
  dmaengine: acpi: Put the CSRT table after using it
This commit is contained in:
Linus Torvalds 2020-09-04 12:12:39 -07:00
commit e2dacf6cd1
9 changed files with 73 additions and 49 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
drivers/dma/acpi-dma.c
View File

@ -135,11 +135,13 @@ static void acpi_dma_parse_csrt(struct acpi_device *adev, struct acpi_dma *adma)
if (ret < 0) {
dev_warn(&adev->dev,
"error in parsing resource group\n");
return;
break;
}
grp = (struct acpi_csrt_group *)((void *)grp + grp->length);
}
acpi_put_table((struct acpi_table_header *)csrt);
}
/**

11
drivers/dma/at_hdmac.c
View File

@ -1650,13 +1650,17 @@ static struct dma_chan *at_dma_xlate(struct of_phandle_args *dma_spec,
return NULL;
dmac_pdev = of_find_device_by_node(dma_spec->np);
if (!dmac_pdev)
return NULL;
dma_cap_zero(mask);
dma_cap_set(DMA_SLAVE, mask);
atslave = kmalloc(sizeof(*atslave), GFP_KERNEL);
if (!atslave)
if (!atslave) {
put_device(&dmac_pdev->dev);
return NULL;
}
atslave->cfg = ATC_DST_H2SEL_HW | ATC_SRC_H2SEL_HW;
/*
@ -1685,8 +1689,11 @@ static struct dma_chan *at_dma_xlate(struct of_phandle_args *dma_spec,
atslave->dma_dev = &dmac_pdev->dev;
chan = dma_request_channel(mask, at_dma_filter, atslave);
if (!chan)
if (!chan) {
put_device(&dmac_pdev->dev);
kfree(atslave);
return NULL;
}
atchan = to_at_dma_chan(chan);
atchan->per_if = dma_spec->args[0] & 0xff;

38
drivers/dma/dma-jz4780.c
View File

@ -879,24 +879,11 @@ static int jz4780_dma_probe(struct platform_device *pdev)
return -EINVAL;
}
ret = platform_get_irq(pdev, 0);
if (ret < 0)
return ret;
jzdma->irq = ret;
ret = request_irq(jzdma->irq, jz4780_dma_irq_handler, 0, dev_name(dev),
jzdma);
if (ret) {
dev_err(dev, "failed to request IRQ %u!\n", jzdma->irq);
return ret;
}
jzdma->clk = devm_clk_get(dev, NULL);
if (IS_ERR(jzdma->clk)) {
dev_err(dev, "failed to get clock\n");
ret = PTR_ERR(jzdma->clk);
goto err_free_irq;
return ret;
}
clk_prepare_enable(jzdma->clk);
@ -949,10 +936,23 @@ static int jz4780_dma_probe(struct platform_device *pdev)
jzchan->vchan.desc_free = jz4780_dma_desc_free;
}
ret = platform_get_irq(pdev, 0);
if (ret < 0)
goto err_disable_clk;
jzdma->irq = ret;
ret = request_irq(jzdma->irq, jz4780_dma_irq_handler, 0, dev_name(dev),
jzdma);
if (ret) {
dev_err(dev, "failed to request IRQ %u!\n", jzdma->irq);
goto err_disable_clk;
}
ret = dmaenginem_async_device_register(dd);
if (ret) {
dev_err(dev, "failed to register device\n");
goto err_disable_clk;
goto err_free_irq;
}
/* Register with OF DMA helpers. */
@ -960,17 +960,17 @@ static int jz4780_dma_probe(struct platform_device *pdev)
jzdma);
if (ret) {
dev_err(dev, "failed to register OF DMA controller\n");
goto err_disable_clk;
goto err_free_irq;
}
dev_info(dev, "JZ4780 DMA controller initialised\n");
return 0;
err_disable_clk:
clk_disable_unprepare(jzdma->clk);
err_free_irq:
free_irq(jzdma->irq, jzdma);
err_disable_clk:
clk_disable_unprepare(jzdma->clk);
return ret;
}

11
drivers/dma/dw-edma/dw-edma-core.c
View File

@ -405,7 +405,7 @@ dw_edma_device_transfer(struct dw_edma_transfer *xfer)
if (xfer->cyclic) {
burst->dar = xfer->xfer.cyclic.paddr;
} else {
burst->dar = sg_dma_address(sg);
burst->dar = dst_addr;
/* Unlike the typical assumption by other
* drivers/IPs the peripheral memory isn't
* a FIFO memory, in this case, it's a
@ -413,14 +413,13 @@ dw_edma_device_transfer(struct dw_edma_transfer *xfer)
* and destination addresses are increased
* by the same portion (data length)
*/
src_addr += sg_dma_len(sg);
}
} else {
burst->dar = dst_addr;
if (xfer->cyclic) {
burst->sar = xfer->xfer.cyclic.paddr;
} else {
burst->sar = sg_dma_address(sg);
burst->sar = src_addr;
/* Unlike the typical assumption by other
* drivers/IPs the peripheral memory isn't
* a FIFO memory, in this case, it's a
@ -428,12 +427,14 @@ dw_edma_device_transfer(struct dw_edma_transfer *xfer)
* and destination addresses are increased
* by the same portion (data length)
*/
dst_addr += sg_dma_len(sg);
}
}
if (!xfer->cyclic)
if (!xfer->cyclic) {
src_addr += sg_dma_len(sg);
dst_addr += sg_dma_len(sg);
sg = sg_next(sg);
}
}
return vchan_tx_prep(&chan->vc, &desc->vd, xfer->flags);

26
drivers/dma/idxd/device.c
View File

@ -410,10 +410,27 @@ int idxd_device_enable(struct idxd_device *idxd)
return 0;
}
void idxd_device_wqs_clear_state(struct idxd_device *idxd)
{
int i;
lockdep_assert_held(&idxd->dev_lock);
for (i = 0; i < idxd->max_wqs; i++) {
struct idxd_wq *wq = &idxd->wqs[i];
if (wq->state == IDXD_WQ_ENABLED) {
idxd_wq_disable_cleanup(wq);
wq->state = IDXD_WQ_DISABLED;
}
}
}
int idxd_device_disable(struct idxd_device *idxd)
{
struct device *dev = &idxd->pdev->dev;
u32 status;
unsigned long flags;
if (!idxd_is_enabled(idxd)) {
dev_dbg(dev, "Device is not enabled\n");
@ -429,13 +446,22 @@ int idxd_device_disable(struct idxd_device *idxd)
return -ENXIO;
}
spin_lock_irqsave(&idxd->dev_lock, flags);
idxd_device_wqs_clear_state(idxd);
idxd->state = IDXD_DEV_CONF_READY;
spin_unlock_irqrestore(&idxd->dev_lock, flags);
return 0;
}
void idxd_device_reset(struct idxd_device *idxd)
{
unsigned long flags;
idxd_cmd_exec(idxd, IDXD_CMD_RESET_DEVICE, 0, NULL);
spin_lock_irqsave(&idxd->dev_lock, flags);
idxd_device_wqs_clear_state(idxd);
idxd->state = IDXD_DEV_CONF_READY;
spin_unlock_irqrestore(&idxd->dev_lock, flags);
}
/* Device configuration bits */

12
drivers/dma/idxd/irq.c
View File

@ -11,18 +11,6 @@
#include "idxd.h"
#include "registers.h"
void idxd_device_wqs_clear_state(struct idxd_device *idxd)
{
int i;
lockdep_assert_held(&idxd->dev_lock);
for (i = 0; i < idxd->max_wqs; i++) {
struct idxd_wq *wq = &idxd->wqs[i];
wq->state = IDXD_WQ_DISABLED;
}
}
static void idxd_device_reinit(struct work_struct *work)
{
struct idxd_device *idxd = container_of(work, struct idxd_device, work);

8
drivers/dma/of-dma.c
View File

@ -71,12 +71,12 @@ static struct dma_chan *of_dma_router_xlate(struct of_phandle_args *dma_spec,
return NULL;
chan = ofdma_target->of_dma_xlate(&dma_spec_target, ofdma_target);
if (chan) {
chan->router = ofdma->dma_router;
chan->route_data = route_data;
} else {
if (IS_ERR_OR_NULL(chan)) {
ofdma->dma_router->route_free(ofdma->dma_router->dev,
route_data);
} else {
chan->router = ofdma->dma_router;
chan->route_data = route_data;
}
/*

2
drivers/dma/pl330.c
View File

@ -2797,6 +2797,7 @@ pl330_prep_dma_memcpy(struct dma_chan *chan, dma_addr_t dst,
while (burst != (1 << desc->rqcfg.brst_size))
desc->rqcfg.brst_size++;
desc->rqcfg.brst_len = get_burst_len(desc, len);
/*
* If burst size is smaller than bus width then make sure we only
* transfer one at a time to avoid a burst stradling an MFIFO entry.
@ -2804,7 +2805,6 @@ pl330_prep_dma_memcpy(struct dma_chan *chan, dma_addr_t dst,
if (desc->rqcfg.brst_size * 8 < pl330->pcfg.data_bus_width)
desc->rqcfg.brst_len = 1;
desc->rqcfg.brst_len = get_burst_len(desc, len);
desc->bytes_requested = len;
desc->txd.flags = flags;

10
drivers/dma/ti/k3-udma.c
View File

@ -2059,9 +2059,9 @@ udma_prep_slave_sg_tr(struct udma_chan *uc, struct scatterlist *sgl,
return NULL;
}
cppi5_tr_init(&tr_req[i].flags, CPPI5_TR_TYPE1, false, false,
CPPI5_TR_EVENT_SIZE_COMPLETION, 0);
cppi5_tr_csf_set(&tr_req[i].flags, CPPI5_TR_CSF_SUPR_EVT);
cppi5_tr_init(&tr_req[tr_idx].flags, CPPI5_TR_TYPE1, false,
false, CPPI5_TR_EVENT_SIZE_COMPLETION, 0);
cppi5_tr_csf_set(&tr_req[tr_idx].flags, CPPI5_TR_CSF_SUPR_EVT);
tr_req[tr_idx].addr = sg_addr;
tr_req[tr_idx].icnt0 = tr0_cnt0;
@ -3101,14 +3101,14 @@ static struct udma_match_data am654_main_data = {
.psil_base = 0x1000,
.enable_memcpy_support = true,
.statictr_z_mask = GENMASK(11, 0),
.rchan_oes_offset = 0x2000,
.rchan_oes_offset = 0x200,
};
static struct udma_match_data am654_mcu_data = {
.psil_base = 0x6000,
.enable_memcpy_support = false,
.statictr_z_mask = GENMASK(11, 0),
.rchan_oes_offset = 0x2000,
.rchan_oes_offset = 0x200,
};
static struct udma_match_data j721e_main_data = {