[PATCH v2 03/16] platform/x86/amd/pmf: Change return type of amd_pmf_set_dram_addr()

[Shyam Sundar S K]

In the current code, the metrics table information was required only
for auto-mode or CnQF at a given time. Hence keeping the return type
of amd_pmf_set_dram_addr() as static made sense.

But with the addition of Smart PC builder feature, the metrics table
information has to be shared by the Smart PC also and this feature
resides outside of core.c.

To make amd_pmf_set_dram_addr() visible outside of core.c make it
as a non-static function and move the allocation of memory for
metrics table from amd_pmf_init_metrics_table() to amd_pmf_set_dram_addr()
as amd_pmf_set_dram_addr() is the common function to set the DRAM
address.

Reviewed-by: Mario Limonciello <mario.limonciello at amd.com>
Signed-off-by: Shyam Sundar S K <Shyam-sundar.S-k at amd.com>
---
 drivers/platform/x86/amd/pmf/core.c | 26 ++++++++++++++++++--------
 drivers/platform/x86/amd/pmf/pmf.h  |  1 +
 2 files changed, 19 insertions(+), 8 deletions(-)

diff --git a/drivers/platform/x86/amd/pmf/core.c b/drivers/platform/x86/amd/pmf/core.c
index 68f1389dda3e..678dce4fea08 100644
--- a/drivers/platform/x86/amd/pmf/core.c
+++ b/drivers/platform/x86/amd/pmf/core.c
@@ -251,29 +251,35 @@ static const struct pci_device_id pmf_pci_ids[] = {
 	{ }
 };
 
-static void amd_pmf_set_dram_addr(struct amd_pmf_dev *dev)
+int amd_pmf_set_dram_addr(struct amd_pmf_dev *dev)
 {
 	u64 phys_addr;
 	u32 hi, low;
 
+	/* Get Metrics Table Address */
+	dev->buf = kzalloc(sizeof(dev->m_table), GFP_KERNEL);
+	if (!dev->buf)
+		return -ENOMEM;
+
 	phys_addr = virt_to_phys(dev->buf);
 	hi = phys_addr >> 32;
 	low = phys_addr & GENMASK(31, 0);
 
 	amd_pmf_send_cmd(dev, SET_DRAM_ADDR_HIGH, 0, hi, NULL);
 	amd_pmf_send_cmd(dev, SET_DRAM_ADDR_LOW, 0, low, NULL);
+
+	return 0;
 }
 
 int amd_pmf_init_metrics_table(struct amd_pmf_dev *dev)
 {
-	/* Get Metrics Table Address */
-	dev->buf = kzalloc(sizeof(dev->m_table), GFP_KERNEL);
-	if (!dev->buf)
-		return -ENOMEM;
+	int ret;
 
 	INIT_DELAYED_WORK(&dev->work_buffer, amd_pmf_get_metrics);
 
-	amd_pmf_set_dram_addr(dev);
+	ret = amd_pmf_set_dram_addr(dev);
+	if (ret)
+		return ret;
 
 	/*
 	 * Start collecting the metrics data after a small delay
@@ -287,9 +293,13 @@ int amd_pmf_init_metrics_table(struct amd_pmf_dev *dev)
 static int amd_pmf_resume_handler(struct device *dev)
 {
 	struct amd_pmf_dev *pdev = dev_get_drvdata(dev);
+	int ret;
 
-	if (pdev->buf)
-		amd_pmf_set_dram_addr(pdev);
+	if (pdev->buf) {
+		ret = amd_pmf_set_dram_addr(pdev);
+		if (ret)
+			return ret;
+	}
 
 	return 0;
 }
diff --git a/drivers/platform/x86/amd/pmf/pmf.h b/drivers/platform/x86/amd/pmf/pmf.h
index e0837799f521..3930b8ed8333 100644
--- a/drivers/platform/x86/amd/pmf/pmf.h
+++ b/drivers/platform/x86/amd/pmf/pmf.h
@@ -421,6 +421,7 @@ int amd_pmf_init_metrics_table(struct amd_pmf_dev *dev);
 int amd_pmf_get_power_source(void);
 int apmf_install_handler(struct amd_pmf_dev *pmf_dev);
 int apmf_os_power_slider_update(struct amd_pmf_dev *dev, u8 flag);
+int amd_pmf_set_dram_addr(struct amd_pmf_dev *dev);
 
 /* SPS Layer */
 int amd_pmf_get_pprof_modes(struct amd_pmf_dev *pmf);
-- 
2.25.1