baylibre-acme: Add a missing return value check.

Check the return value of sr_gpio_setval_export() in bl_acme_set_power_off()
and return an appropriate error if the call fails.

Signed-off-by: Bartosz Golaszewski <redacted>

diff --git a/src/hardware/baylibre-acme/protocol.c b/src/hardware/baylibre-acme/protocol.c
index d0552553feffbebdb298cba9c1c848e0d87de1e8..f8fdb595435a21a49dc18fa6dcb03fcc9e16b331 100644 (file)
--- a/src/hardware/baylibre-acme/protocol.c
+++ b/src/hardware/baylibre-acme/protocol.c
@@ -424,6 +424,11 @@ SR_PRIV int bl_acme_set_power_off(const struct sr_channel_group *cg,
        }
 
        val = sr_gpio_setval_export(pws_gpios[cgp->index], off ? 0 : 1);
+       if (val < 0) {
+               sr_err("Error setting power-off state: gpio: %d",
+                      pws_gpios[cgp->index]);
+               return SR_ERR_IO;
+       }
 
        return SR_OK;
 }