On 6/20/2022 2:30 PM, Dmitry Baryshkov wrote:
To let the probe function bail early if any of the resources is
unavailable, move resource allocattion from kms_init directly to the
allocation
probe callback. While we are at it, replace irq_of_parse_and_map() with
platform_get_irq().
Any specific reason to replace this?
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxx>
With those two addressed,
Reviewed-by: Abhinav Kumar <quic_abhinavk@xxxxxxxxxxx>
---
drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c | 62 +++++++++++++------------
1 file changed, 32 insertions(+), 30 deletions(-)
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
index ae13a3a5d8a5..756be04d804b 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
@@ -1206,31 +1206,13 @@ static int dpu_kms_init(struct drm_device *ddev)
struct device *dev = ddev->dev;
struct platform_device *pdev = to_platform_device(dev);
struct dpu_kms *dpu_kms;
- int irq;
struct dev_pm_opp *opp;
int ret = 0;
unsigned long max_freq = ULONG_MAX;
- dpu_kms = devm_kzalloc(&pdev->dev, sizeof(*dpu_kms), GFP_KERNEL);
+ dpu_kms = to_dpu_kms(priv->kms);
if (!dpu_kms)
- return -ENOMEM;
-
- ret = devm_pm_opp_set_clkname(dev, "core");
- if (ret)
- return ret;
- /* OPP table is optional */
- ret = devm_pm_opp_of_add_table(dev);
- if (ret && ret != -ENODEV) {
- dev_err(dev, "invalid OPP table in device tree\n");
- return ret;
- }
-
- ret = devm_clk_bulk_get_all(&pdev->dev, &dpu_kms->clocks);
- if (ret < 0) {
- DPU_ERROR("failed to parse clocks, ret=%d\n", ret);
- return ret;
- }
- dpu_kms->num_clocks = ret;
+ return -EINVAL;
opp = dev_pm_opp_find_freq_floor(dev, &max_freq);
if (!IS_ERR(opp))
@@ -1249,21 +1231,41 @@ static int dpu_kms_init(struct drm_device *ddev)
pm_runtime_enable(&pdev->dev);
dpu_kms->rpm_enabled = true;
- priv->kms = &dpu_kms->base;
-
- irq = irq_of_parse_and_map(dpu_kms->pdev->dev.of_node, 0);
- if (!irq) {
- DPU_ERROR("failed to get irq\n");
- return -EINVAL;
- }
- dpu_kms->base.irq = irq;
-
return 0;
}
static int dpu_dev_probe(struct platform_device *pdev)
{
- return msm_drv_probe(&pdev->dev, dpu_kms_init, NULL);
+ struct device *dev = &pdev->dev;
+ struct dpu_kms *dpu_kms;
+ int irq;
+ int ret = 0;
+
+ dpu_kms = devm_kzalloc(dev, sizeof(*dpu_kms), GFP_KERNEL);
+ if (!dpu_kms)
+ return -ENOMEM;
+
+ ret = devm_pm_opp_set_clkname(dev, "core");
+ if (ret)
+ return ret;
+ /* OPP table is optional */
+ ret = devm_pm_opp_of_add_table(dev);
+ if (ret && ret != -ENODEV)
+ return dev_err_probe(dev, ret, "invalid OPP table in device tree\n");
+
+ ret = devm_clk_bulk_get_all(&pdev->dev, &dpu_kms->clocks);
+ if (ret < 0)
+ return dev_err_probe(dev, ret, "failed to parse clocks\n");
+
+ dpu_kms->num_clocks = ret;
+
+ irq = platform_get_irq(pdev, 0);
+ if (irq < 0)
+ return dev_err_probe(dev, irq, "failed to get irq\n");
+
+ dpu_kms->base.irq = irq;
+
+ return msm_drv_probe(&pdev->dev, dpu_kms_init, &dpu_kms->base);
}
static int dpu_dev_remove(struct platform_device *pdev)
