[PATCH v2] thermal: fix error condition for reading st,thermal-flags

[Gopi Krishna Menon]

of_property_read_u32 returns 0 on success. The current check returns
-EINVAL if the property is read successfully.

Fix the check by removing ! from of_property_read_u32

Fixes: b9c7aff481f1 ("drivers/thermal/spear_thermal.c: add Device Tree probing capability")
Reviewed-by: Lukasz Luba <lukasz.luba@xxxxxxx>
Suggested-by: Daniel Baluta <daniel.baluta@xxxxxxx>
Signed-off-by: Gopi Krishna Menon <krishnagopi487@xxxxxxxxx>
---
Changes since v1:
- Add Fixes and Reviewed-by tags

Note:
* This patch is part of the GSoC2026 application process for device tree bindings conversions
* https://github.com/LinuxFoundationGSoC/ProjectIdeas/wiki/GSoC-2026-Device-Tree-Bindings
* Changes have only been compile tested

 drivers/thermal/spear_thermal.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/thermal/spear_thermal.c b/drivers/thermal/spear_thermal.c
index 603dadcd3df5..5e3e9c1f32f8 100644
--- a/drivers/thermal/spear_thermal.c
+++ b/drivers/thermal/spear_thermal.c
@@ -93,7 +93,7 @@ static int spear_thermal_probe(struct platform_device *pdev)
 	struct device_node *np = pdev->dev.of_node;
 	int ret = 0, val;
 
-	if (!np || !of_property_read_u32(np, "st,thermal-flags", &val)) {
+	if (!np || of_property_read_u32(np, "st,thermal-flags", &val)) {
 		dev_err(&pdev->dev, "Failed: DT Pdata not passed\n");
 		return -EINVAL;
 	}
-- 
2.53.0