Sometimes the first version request is sent before the device has fully
initialized. This seems to happen on some hardware during boot when the
iguanair is plugged into a root hub.
Signed-off-by: Sean Young <s...@mess.org>
---
drivers/media/rc/iguanair.c | 19 ++++++++++---------
1 file changed, 10 insertions(+), 9 deletions(-)
diff --git a/drivers/media/rc/iguanair.c b/drivers/media/rc/iguanair.c
index a569c69..bc3557b 100644
--- a/drivers/media/rc/iguanair.c
+++ b/drivers/media/rc/iguanair.c
@@ -224,6 +224,14 @@ static int iguanair_get_features(struct iguanair *ir)
ir->packet->header.cmd = CMD_GET_VERSION;
rc = iguanair_send(ir, sizeof(ir->packet->header));
+
+ /*
+ * We might have sent the command before the device had time to
+ * initialize. Retry if we got no response.
+ */
+ if (rc == -ETIMEDOUT)
+ rc = iguanair_send(ir, sizeof(ir->packet->header));
+
if (rc) {
dev_info(ir->dev, "failed to get version\n");
goto out;
@@ -255,19 +263,14 @@ static int iguanair_get_features(struct iguanair *ir)
ir->packet->header.cmd = CMD_GET_FEATURES;
rc = iguanair_send(ir, sizeof(ir->packet->header));
- if (rc) {
+ if (rc)
dev_info(ir->dev, "failed to get features\n");
- goto out;
- }
-
out:
return rc;
}
static int iguanair_receiver(struct iguanair *ir, bool enable)
{
- int rc;
-
ir->packet->header.start = 0;
ir->packet->header.direction = DIR_OUT;
ir->packet->header.cmd = enable ? CMD_RECEIVER_ON : CMD_RECEIVER_OFF;
@@ -275,9 +278,7 @@ static int iguanair_receiver(struct iguanair *ir, bool
enable)
if (enable)
ir_raw_event_reset(ir->rc);
- rc = iguanair_send(ir, sizeof(ir->packet->header));
-
- return rc;
+ return iguanair_send(ir, sizeof(ir->packet->header));
}
/*
--
1.7.11.7
--
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