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Message-Id: <20250627-arm_cs_fix_clock_v4-v4-8-0ce0009c38f8@arm.com>
Date: Fri, 27 Jun 2025 12:51:54 +0100
From: Leo Yan <leo.yan@....com>
To: Suzuki K Poulose <suzuki.poulose@....com>,
Mike Leach <mike.leach@...aro.org>, James Clark <james.clark@...aro.org>,
Anshuman Khandual <anshuman.khandual@....com>,
Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc: coresight@...ts.linaro.org, linux-arm-kernel@...ts.infradead.org,
linux-kernel@...r.kernel.org, Leo Yan <leo.yan@....com>
Subject: [PATCH v4 08/10] coresight: Refactor driver data allocation
The driver data no longer needs to be allocated separately in the static
and dynamic probes. Moved the allocation into the low-level functions to
avoid code duplication.
Signed-off-by: Leo Yan <leo.yan@....com>
---
drivers/hwtracing/coresight/coresight-catu.c | 20 +++++++-------------
drivers/hwtracing/coresight/coresight-cpu-debug.c | 21 +++++++--------------
drivers/hwtracing/coresight/coresight-tmc-core.c | 20 +++++++-------------
3 files changed, 21 insertions(+), 40 deletions(-)
diff --git a/drivers/hwtracing/coresight/coresight-catu.c b/drivers/hwtracing/coresight/coresight-catu.c
index 0f476a0cbd740c233d039c5c411ca192681e2023..a3ccb7034ae14d7339bc2549bccadf11e28c45e2 100644
--- a/drivers/hwtracing/coresight/coresight-catu.c
+++ b/drivers/hwtracing/coresight/coresight-catu.c
@@ -515,11 +515,17 @@ static int __catu_probe(struct device *dev, struct resource *res)
{
int ret = 0;
u32 dma_mask;
- struct catu_drvdata *drvdata = dev_get_drvdata(dev);
+ struct catu_drvdata *drvdata;
struct coresight_desc catu_desc;
struct coresight_platform_data *pdata = NULL;
void __iomem *base;
+ drvdata = devm_kzalloc(dev, sizeof(*drvdata), GFP_KERNEL);
+ if (!drvdata)
+ return -ENOMEM;
+
+ dev_set_drvdata(dev, drvdata);
+
ret = coresight_get_enable_clocks(dev, &drvdata->pclk, &drvdata->atclk);
if (ret)
return ret;
@@ -580,14 +586,8 @@ static int __catu_probe(struct device *dev, struct resource *res)
static int catu_probe(struct amba_device *adev, const struct amba_id *id)
{
- struct catu_drvdata *drvdata;
int ret;
- drvdata = devm_kzalloc(&adev->dev, sizeof(*drvdata), GFP_KERNEL);
- if (!drvdata)
- return -ENOMEM;
-
- amba_set_drvdata(adev, drvdata);
ret = __catu_probe(&adev->dev, &adev->res);
if (!ret)
pm_runtime_put(&adev->dev);
@@ -627,18 +627,12 @@ static struct amba_driver catu_driver = {
static int catu_platform_probe(struct platform_device *pdev)
{
struct resource *res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- struct catu_drvdata *drvdata;
int ret = 0;
- drvdata = devm_kzalloc(&pdev->dev, sizeof(*drvdata), GFP_KERNEL);
- if (!drvdata)
- return -ENOMEM;
-
pm_runtime_get_noresume(&pdev->dev);
pm_runtime_set_active(&pdev->dev);
pm_runtime_enable(&pdev->dev);
- dev_set_drvdata(&pdev->dev, drvdata);
ret = __catu_probe(&pdev->dev, res);
pm_runtime_put(&pdev->dev);
if (ret)
diff --git a/drivers/hwtracing/coresight/coresight-cpu-debug.c b/drivers/hwtracing/coresight/coresight-cpu-debug.c
index 5f6db2fb95d4623a0bab08828ae00442870abd7d..3edfb5d3d02056afcaab4da575d1101c68aeac80 100644
--- a/drivers/hwtracing/coresight/coresight-cpu-debug.c
+++ b/drivers/hwtracing/coresight/coresight-cpu-debug.c
@@ -562,10 +562,16 @@ static void debug_func_exit(void)
static int __debug_probe(struct device *dev, struct resource *res)
{
- struct debug_drvdata *drvdata = dev_get_drvdata(dev);
+ struct debug_drvdata *drvdata;
void __iomem *base;
int ret;
+ drvdata = devm_kzalloc(dev, sizeof(*drvdata), GFP_KERNEL);
+ if (!drvdata)
+ return -ENOMEM;
+
+ dev_set_drvdata(dev, drvdata);
+
ret = coresight_get_enable_clocks(dev, &drvdata->pclk, NULL);
if (ret)
return ret;
@@ -629,13 +635,6 @@ static int __debug_probe(struct device *dev, struct resource *res)
static int debug_probe(struct amba_device *adev, const struct amba_id *id)
{
- struct debug_drvdata *drvdata;
-
- drvdata = devm_kzalloc(&adev->dev, sizeof(*drvdata), GFP_KERNEL);
- if (!drvdata)
- return -ENOMEM;
-
- amba_set_drvdata(adev, drvdata);
return __debug_probe(&adev->dev, &adev->res);
}
@@ -694,14 +693,8 @@ static struct amba_driver debug_driver = {
static int debug_platform_probe(struct platform_device *pdev)
{
struct resource *res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- struct debug_drvdata *drvdata;
int ret = 0;
- drvdata = devm_kzalloc(&pdev->dev, sizeof(*drvdata), GFP_KERNEL);
- if (!drvdata)
- return -ENOMEM;
-
- dev_set_drvdata(&pdev->dev, drvdata);
pm_runtime_get_noresume(&pdev->dev);
pm_runtime_set_active(&pdev->dev);
pm_runtime_enable(&pdev->dev);
diff --git a/drivers/hwtracing/coresight/coresight-tmc-core.c b/drivers/hwtracing/coresight/coresight-tmc-core.c
index ead3f5358d411b1d9e45f87986bd85cbe5be720a..e5ab4a0323354d826c831f68c71d81808cbcd8ff 100644
--- a/drivers/hwtracing/coresight/coresight-tmc-core.c
+++ b/drivers/hwtracing/coresight/coresight-tmc-core.c
@@ -785,10 +785,16 @@ static int __tmc_probe(struct device *dev, struct resource *res)
u32 devid;
void __iomem *base;
struct coresight_platform_data *pdata = NULL;
- struct tmc_drvdata *drvdata = dev_get_drvdata(dev);
+ struct tmc_drvdata *drvdata;
struct coresight_desc desc = { 0 };
struct coresight_dev_list *dev_list = NULL;
+ drvdata = devm_kzalloc(dev, sizeof(*drvdata), GFP_KERNEL);
+ if (!drvdata)
+ return -ENOMEM;
+
+ dev_set_drvdata(dev, drvdata);
+
ret = coresight_get_enable_clocks(dev, &drvdata->pclk, &drvdata->atclk);
if (ret)
return ret;
@@ -898,14 +904,8 @@ static int __tmc_probe(struct device *dev, struct resource *res)
static int tmc_probe(struct amba_device *adev, const struct amba_id *id)
{
- struct tmc_drvdata *drvdata;
int ret;
- drvdata = devm_kzalloc(&adev->dev, sizeof(*drvdata), GFP_KERNEL);
- if (!drvdata)
- return -ENOMEM;
-
- amba_set_drvdata(adev, drvdata);
ret = __tmc_probe(&adev->dev, &adev->res);
if (!ret)
pm_runtime_put(&adev->dev);
@@ -982,14 +982,8 @@ static struct amba_driver tmc_driver = {
static int tmc_platform_probe(struct platform_device *pdev)
{
struct resource *res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- struct tmc_drvdata *drvdata;
int ret = 0;
- drvdata = devm_kzalloc(&pdev->dev, sizeof(*drvdata), GFP_KERNEL);
- if (!drvdata)
- return -ENOMEM;
-
- dev_set_drvdata(&pdev->dev, drvdata);
pm_runtime_get_noresume(&pdev->dev);
pm_runtime_set_active(&pdev->dev);
pm_runtime_enable(&pdev->dev);
--
2.34.1
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