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dmaengine: Drop unnecessary of_match_device() calls

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If probe is reached, we've already matched the device and in the case of
DT matching, the struct device_node pointer will be set. Therefore, there
is no need to call of_match_device() in probe.

Signed-off-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20231006213835.332848-1-robh@kernel.org
Signed-off-by: Vinod Koul <vkoul@kernel.org>
This commit is contained in:
Rob Herring 2023-10-06 16:38:35 -05:00 committed by Vinod Koul
parent a67ba97dfb
commit c48de45d4c
4 changed files with 13 additions and 32 deletions
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25
drivers/dma/k3dma.c
View File

@ -15,7 +15,6 @@
#include <linux/platform_device.h>
#include <linux/slab.h>
#include <linux/spinlock.h>
#include <linux/of_device.h>
#include <linux/of.h>
#include <linux/clk.h>
#include <linux/of_dma.h>
@ -839,7 +838,6 @@ static int k3_dma_probe(struct platform_device *op)
{
const struct k3dma_soc_data *soc_data;
struct k3_dma_dev *d;
const struct of_device_id *of_id;
int i, ret, irq = 0;
d = devm_kzalloc(&op->dev, sizeof(*d), GFP_KERNEL);
@ -854,19 +852,16 @@ static int k3_dma_probe(struct platform_device *op)
if (IS_ERR(d->base))
return PTR_ERR(d->base);
of_id = of_match_device(k3_pdma_dt_ids, &op->dev);
if (of_id) {
of_property_read_u32((&op->dev)->of_node,
"dma-channels", &d->dma_channels);
of_property_read_u32((&op->dev)->of_node,
"dma-requests", &d->dma_requests);
ret = of_property_read_u32((&op->dev)->of_node,
"dma-channel-mask", &d->dma_channel_mask);
if (ret) {
dev_warn(&op->dev,
"dma-channel-mask doesn't exist, considering all as available.\n");
d->dma_channel_mask = (u32)~0UL;
}
of_property_read_u32((&op->dev)->of_node,
"dma-channels", &d->dma_channels);
of_property_read_u32((&op->dev)->of_node,
"dma-requests", &d->dma_requests);
ret = of_property_read_u32((&op->dev)->of_node,
"dma-channel-mask", &d->dma_channel_mask);
if (ret) {
dev_warn(&op->dev,
"dma-channel-mask doesn't exist, considering all as available.\n");
d->dma_channel_mask = (u32)~0UL;
}
if (!(soc_data->flags & K3_FLAG_NOCLK)) {

5
drivers/dma/mmp_pdma.c
View File

@ -15,7 +15,6 @@
#include <linux/device.h>
#include <linux/platform_data/mmp_dma.h>
#include <linux/dmapool.h>
#include <linux/of_device.h>
#include <linux/of_dma.h>
#include <linux/of.h>
@ -1019,7 +1018,6 @@ static struct dma_chan *mmp_pdma_dma_xlate(struct of_phandle_args *dma_spec,
static int mmp_pdma_probe(struct platform_device *op)
{
struct mmp_pdma_device *pdev;
const struct of_device_id *of_id;
struct mmp_dma_platdata *pdata = dev_get_platdata(&op->dev);
int i, ret, irq = 0;
int dma_channels = 0, irq_num = 0;
@ -1039,8 +1037,7 @@ static int mmp_pdma_probe(struct platform_device *op)
if (IS_ERR(pdev->base))
return PTR_ERR(pdev->base);
of_id = of_match_device(mmp_pdma_dt_ids, pdev->dev);
if (of_id) {
if (pdev->dev->of_node) {
/* Parse new and deprecated dma-channels properties */
if (of_property_read_u32(pdev->dev->of_node, "dma-channels",
&dma_channels))

7
drivers/dma/pxa_dma.c
View File

@ -15,9 +15,8 @@
#include <linux/device.h>
#include <linux/platform_data/mmp_dma.h>
#include <linux/dmapool.h>
#include <linux/of_device.h>
#include <linux/of_dma.h>
#include <linux/of.h>
#include <linux/of_dma.h>
#include <linux/wait.h>
#include <linux/dma/pxa-dma.h>
@ -1344,7 +1343,6 @@ static int pxad_init_dmadev(struct platform_device *op,
static int pxad_probe(struct platform_device *op)
{
struct pxad_device *pdev;
const struct of_device_id *of_id;
const struct dma_slave_map *slave_map = NULL;
struct mmp_dma_platdata *pdata = dev_get_platdata(&op->dev);
int ret, dma_channels = 0, nb_requestors = 0, slave_map_cnt = 0;
@ -1362,8 +1360,7 @@ static int pxad_probe(struct platform_device *op)
if (IS_ERR(pdev->base))
return PTR_ERR(pdev->base);
of_id = of_match_device(pxad_dt_ids, &op->dev);
if (of_id) {
if (op->dev.of_node) {
/* Parse new and deprecated dma-channels properties */
if (of_property_read_u32(op->dev.of_node, "dma-channels",
&dma_channels))

8
drivers/dma/stm32-dma.c
View File

@ -21,7 +21,6 @@
#include <linux/list.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/of_device.h>
#include <linux/of_dma.h>
#include <linux/platform_device.h>
#include <linux/pm_runtime.h>
@ -1561,17 +1560,10 @@ static int stm32_dma_probe(struct platform_device *pdev)
struct stm32_dma_chan *chan;
struct stm32_dma_device *dmadev;
struct dma_device *dd;
const struct of_device_id *match;
struct resource *res;
struct reset_control *rst;
int i, ret;
match = of_match_device(stm32_dma_of_match, &pdev->dev);
if (!match) {
dev_err(&pdev->dev, "Error: No device match found\n");
return -ENODEV;
}
dmadev = devm_kzalloc(&pdev->dev, sizeof(*dmadev), GFP_KERNEL);
if (!dmadev)
return -ENOMEM;