summaryrefslogtreecommitdiff
path: root/drivers/dma
diff options
context:
space:
mode:
authorRob Herring <robh@kernel.org>2023-10-07 00:38:35 +0300
committerVinod Koul <vkoul@kernel.org>2023-10-09 08:25:16 +0300
commitc48de45d4cefc5a2f0d0e4101c39884326ac704c (patch)
tree20d0558911921bf7384f1ed5e96f48186052a74e /drivers/dma
parenta67ba97dfb30486deb4661f770b954387acc898d (diff)
downloadlinux-c48de45d4cefc5a2f0d0e4101c39884326ac704c.tar.xz
dmaengine: Drop unnecessary of_match_device() calls
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>
Diffstat (limited to 'drivers/dma')
-rw-r--r--drivers/dma/k3dma.c25
-rw-r--r--drivers/dma/mmp_pdma.c5
-rw-r--r--drivers/dma/pxa_dma.c7
-rw-r--r--drivers/dma/stm32-dma.c8
4 files changed, 13 insertions, 32 deletions
diff --git a/drivers/dma/k3dma.c b/drivers/dma/k3dma.c
index 22b37b525a48..5de8c21d41e7 100644
--- a/drivers/dma/k3dma.c
+++ b/drivers/dma/k3dma.c
@@ -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)) {
diff --git a/drivers/dma/mmp_pdma.c b/drivers/dma/mmp_pdma.c
index 492ec491a59b..136fcaeff8dd 100644
--- a/drivers/dma/mmp_pdma.c
+++ b/drivers/dma/mmp_pdma.c
@@ -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))
diff --git a/drivers/dma/pxa_dma.c b/drivers/dma/pxa_dma.c
index c6e2862896e3..31f8da810c05 100644
--- a/drivers/dma/pxa_dma.c
+++ b/drivers/dma/pxa_dma.c
@@ -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))
diff --git a/drivers/dma/stm32-dma.c b/drivers/dma/stm32-dma.c
index a732b3807b11..c8089e77c950 100644
--- a/drivers/dma/stm32-dma.c
+++ b/drivers/dma/stm32-dma.c
@@ -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;