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Subject[PATCH] coresight: Fix check in coresight_tmc_etr_buf_insert_barrier_packet
Date
We request for "CORESIGHT_BARRIER_PKT_SIZE" length and we should
be happy when we get that size.

Cc: Mathieu Poirier <mathieu.poirier@linaro.org>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
---

Mathieu,

Please could you pull this patch, if you are happy with it ?
This fixes a problem in the ETR buf series, which I just
noticed while testing the part2 of the series.

Suzuki
---
drivers/hwtracing/coresight/coresight-tmc-etr.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/hwtracing/coresight/coresight-tmc-etr.c b/drivers/hwtracing/coresight/coresight-tmc-etr.c
index e2bcef3..c736250 100644
--- a/drivers/hwtracing/coresight/coresight-tmc-etr.c
+++ b/drivers/hwtracing/coresight/coresight-tmc-etr.c
@@ -862,7 +862,7 @@ tmc_etr_buf_insert_barrier_packet(struct etr_buf *etr_buf, u64 offset)

len = tmc_etr_buf_get_data(etr_buf, offset,
CORESIGHT_BARRIER_PKT_SIZE, &bufp);
- if (WARN_ON(len <= CORESIGHT_BARRIER_PKT_SIZE))
+ if (WARN_ON(len < CORESIGHT_BARRIER_PKT_SIZE))
return -EINVAL;
coresight_insert_barrier_packet(bufp);
return offset + CORESIGHT_BARRIER_PKT_SIZE;
--
2.7.4
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