diff options
Diffstat (limited to 'drivers/hwtracing/coresight/coresight-tmc-etr.c')
| -rw-r--r-- | drivers/hwtracing/coresight/coresight-tmc-etr.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/drivers/hwtracing/coresight/coresight-tmc-etr.c b/drivers/hwtracing/coresight/coresight-tmc-etr.c index 3116d1f28e66..2246c1e6744a 100644 --- a/drivers/hwtracing/coresight/coresight-tmc-etr.c +++ b/drivers/hwtracing/coresight/coresight-tmc-etr.c @@ -928,6 +928,19 @@ static void tmc_sync_etr_buf(struct tmc_drvdata *drvdata) rrp = tmc_read_rrp(drvdata); rwp = tmc_read_rwp(drvdata); status = readl_relaxed(drvdata->base + TMC_STS); + + /* + * If there were memory errors in the session, truncate the + * buffer. + */ + if (WARN_ON_ONCE(status & TMC_STS_MEMERR)) { + dev_dbg(&drvdata->csdev->dev, + "tmc memory error detected, truncating buffer\n"); + etr_buf->len = 0; + etr_buf->full = 0; + return; + } + etr_buf->full = status & TMC_STS_FULL; WARN_ON(!etr_buf->ops || !etr_buf->ops->sync); |