Change in osmo-ccid-firmware[master]: Avoid endless loop while printing debug uart ringbuffer

[laforge]

laforge has uploaded this change for review. ( https://gerrit.osmocom.org/c/osmo-ccid-firmware/+/16055 )


Change subject: Avoid endless loop while printing debug uart ringbuffer
......................................................................

Avoid endless loop while printing debug uart ringbuffer

Change-Id: I84bf6f47c785cfecec4764f7e86958103cf24f8a
---
M sysmoOCTSIM/hal/src/hal_usart_async_rings.c
1 file changed, 5 insertions(+), 1 deletion(-)



  git pull ssh://gerrit.osmocom.org:29418/osmo-ccid-firmware refs/changes/55/16055/1

diff --git a/sysmoOCTSIM/hal/src/hal_usart_async_rings.c b/sysmoOCTSIM/hal/src/hal_usart_async_rings.c
index 38bdca4..704c6ab 100644
--- a/sysmoOCTSIM/hal/src/hal_usart_async_rings.c
+++ b/sysmoOCTSIM/hal/src/hal_usart_async_rings.c
@@ -321,7 +321,11 @@
 	ASSERT(descr && buf && length);
 
 	for (uint16_t i = 0; i < length; i++) {
-		while (ringbuffer_num(&descr->tx) > descr->tx.size); // WARNING blocking until there is space in the buffer
+		/* HACK: disabling this to avoid getting stuck indefinitely.  In theory, this while loop below
+		 * would exit at some point as the UART is supposedly transmitting data.  However, in some
+		 * situations it is not transmitting, and hence the condition becomes never true, waiting here
+		 * indefinitely.  We will now simply ovewrite old log data if it isn't sent fast enough */
+		//while (ringbuffer_num(&descr->tx) > descr->tx.size); // WARNING blocking until there is space in the buffer
 		ringbuffer_put(&descr->tx, buf[i]);
 	}
 	descr->stat             = USART_ASYNC_RINGS_STATUS_BUSY;

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Gerrit-Project: osmo-ccid-firmware
Gerrit-Branch: master
Gerrit-Change-Id: I84bf6f47c785cfecec4764f7e86958103cf24f8a
Gerrit-Change-Number: 16055
Gerrit-PatchSet: 1
Gerrit-Owner: laforge <laforge at osmocom.org>
Gerrit-MessageType: newchange
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