From 70ea0806d96df5a8ea83793da46f2676d9695e69 Mon Sep 17 00:00:00 2001
From: Kevin O'Connor <kevin@koconnor.net>
Date: Sun, 25 Apr 2021 11:30:13 -0400
Subject: [PATCH] linux: Raise an error if configuring a pullup when that is
 not supported

Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
---
 src/linux/gpio.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/linux/gpio.c b/src/linux/gpio.c
index ccc66a7f..15ed3bae 100644
--- a/src/linux/gpio.c
+++ b/src/linux/gpio.c
@@ -153,6 +153,9 @@ gpio_in_reset(struct gpio_in g, int8_t pull_up)
     } else if (pull_up < 0) {
         req.flags |= GPIOD_LINE_REQUEST_FLAG_BIAS_PULL_DOWN;
     }
+#else
+    if (pull_up)
+        shutdown("Linux gpio interface does not support pullup/pulldown");
 #endif
     req.lineoffsets[0] = g.line->offset;
     strncpy(req.consumer_label, GPIO_CONSUMER, sizeof(req.consumer_label) - 1);