of_find_device_by_node() takes a reference to the struct device
when it finds a match via get_device.
We also should make sure to drop the reference to the device
taken by of_find_device_by_node() when returning error.
Signed-off-by: Peng Hao <peng.h...@zte.com.cn>
---
drivers/thermal/qcom/tsens-common.c | 33 +++++++++++++++++++++++----------
1 file changed, 23 insertions(+), 10 deletions(-)
diff --git a/drivers/thermal/qcom/tsens-common.c
b/drivers/thermal/qcom/tsens-common.c
index 78652ca..f80c73f 100644
--- a/drivers/thermal/qcom/tsens-common.c
+++ b/drivers/thermal/qcom/tsens-common.c
@@ -144,13 +144,17 @@ int __init init_common(struct tsens_device *tmdev)
tmdev->tm_offset = 0;
res = platform_get_resource(op, IORESOURCE_MEM, 1);
srot_base = devm_ioremap_resource(&op->dev, res);
- if (IS_ERR(srot_base))
- return PTR_ERR(srot_base);
+ if (IS_ERR(srot_base)) {
+ ret = PTR_ERR(srot_base);
+ goto err_put_device;
+ }
tmdev->srot_map = devm_regmap_init_mmio(tmdev->dev, srot_base,
&tsens_srot_config);
- if (IS_ERR(tmdev->srot_map))
- return PTR_ERR(tmdev->srot_map);
+ if (IS_ERR(tmdev->srot_map)) {
+ ret = PTR_ERR(tmdev->srot_map);
+ goto err_put_device;
+ }
} else {
/* old DTs where SROT and TM were in a contiguous 2K block */
@@ -159,22 +163,31 @@ int __init init_common(struct tsens_device *tmdev)
res = platform_get_resource(op, IORESOURCE_MEM, 0);
tm_base = devm_ioremap_resource(&op->dev, res);
- if (IS_ERR(tm_base))
- return PTR_ERR(tm_base);
+ if (IS_ERR(tm_base)) {
+ ret = PTR_ERR(tm_base);
+ goto err_put_device;
+ }
tmdev->tm_map = devm_regmap_init_mmio(tmdev->dev, tm_base,
&tsens_config);
- if (IS_ERR(tmdev->tm_map))
- return PTR_ERR(tmdev->tm_map);
+ if (IS_ERR(tmdev->tm_map)) {
+ ret = PTR_ERR(tmdev->tm_map);
+ goto err_put_device;
+ }
if (tmdev->srot_map) {
ret = regmap_read(tmdev->srot_map, ctrl_offset, &code);
if (ret)
- return ret;
+ goto err_put_device;
if (!(code & TSENS_EN)) {
dev_err(tmdev->dev, "tsens device is not enabled\n");
- return -ENODEV;
+ ret = -ENODEV;
+ goto err_put_device;
}
}
return 0;
+
+err_put_device:
+ put_device(&op->dev);
+ return ret;
}
--
1.8.3.1
