diff options
Diffstat (limited to 'drivers/hwtracing')
| -rw-r--r-- | drivers/hwtracing/coresight/coresight-tmc-etr.c | 28 |
1 files changed, 2 insertions, 26 deletions
diff --git a/drivers/hwtracing/coresight/coresight-tmc-etr.c b/drivers/hwtracing/coresight/coresight-tmc-etr.c index 1de05c9a01c8..18c9a184d31a 100644 --- a/drivers/hwtracing/coresight/coresight-tmc-etr.c +++ b/drivers/hwtracing/coresight/coresight-tmc-etr.c @@ -211,32 +211,8 @@ out: static int tmc_enable_etr_sink_perf(struct coresight_device *csdev) { - int ret = 0; - unsigned long flags; - struct tmc_drvdata *drvdata = dev_get_drvdata(csdev->dev.parent); - - spin_lock_irqsave(&drvdata->spinlock, flags); - if (drvdata->reading) { - ret = -EINVAL; - goto out; - } - - /* - * In Perf mode there can be only one writer per sink. There - * is also no need to continue if the ETR is already operated - * from sysFS. - */ - if (drvdata->mode != CS_MODE_DISABLED) { - ret = -EINVAL; - goto out; - } - - drvdata->mode = CS_MODE_PERF; - tmc_etr_enable_hw(drvdata); -out: - spin_unlock_irqrestore(&drvdata->spinlock, flags); - - return ret; + /* We don't support perf mode yet ! */ + return -EINVAL; } static int tmc_enable_etr_sink(struct coresight_device *csdev, u32 mode) |