diff mbox series

[7/7] gpio: cdev: return EOPNOTSUPP when HTE is unavailable

Message ID 20260831143125.151360-8-ivanrwcm25@gmail.com
State New
Headers show
Series docs/abi: align userspace documentation with implementation | expand

Commit Message

Iván Ezequiel Rodriguez Aug. 31, 2026, 2:31 p.m. UTC 
GPIO v2 documentation promises -EOPNOTSUPP when
GPIO_V2_LINE_FLAG_EVENT_CLOCK_HTE is requested without HTE hardware;
map -ENODEV from hte_ts_get() in the HTE-only edge setup path.

Signed-off-by: Iván Ezequiel Rodriguez <ivanrwcm25@gmail.com>
---
 drivers/gpio/gpiolib-cdev.c | 2 ++
 1 file changed, 2 insertions(+)
diff mbox series

Patch

diff --git a/drivers/gpio/gpiolib-cdev.c b/drivers/gpio/gpiolib-cdev.c
index 9f3b628d5793..6dc01f7ea838 100644
--- a/drivers/gpio/gpiolib-cdev.c
+++ b/drivers/gpio/gpiolib-cdev.c
@@ -715,6 +715,8 @@  static int hte_edge_setup(struct line *line, u64 eflags)
 			   line->desc);
 
 	ret = hte_ts_get(NULL, hdesc, 0);
+	if (ret == -ENODEV)
+		return -EOPNOTSUPP;
 	if (ret)
 		return ret;