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| author |   Suzuki K Poulose <suzuki.poulose@arm.com> | 2018-09-20 13:18:16 -0600 |
|---|---|---|
| committer |   Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-09-25 20:21:02 +0200 |
| commit | 4d3ebd3658d8b87d8ead979725305adc6fae3855 (patch) | |
| tree | 94c58b888aa82eb3892aa0c3631ffbfd539ed634 /drivers/hwtracing/coresight/coresight-tmc-etr.c | |
| parent | misc: genwqe: remove duplicated include file (diff) | |
| download | linux-dev-4d3ebd3658d8b87d8ead979725305adc6fae3855.tar.xz linux-dev-4d3ebd3658d8b87d8ead979725305adc6fae3855.zip | |
coreisght: tmc: Claim device before use
Use CLAIM tags to make sure the device is available for use.
Cc: Mathieu Poirier <mathieu.poirier@linaro.org>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/hwtracing/coresight/coresight-tmc-etr.c')
| -rw-r--r-- | drivers/hwtracing/coresight/coresight-tmc-etr.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/hwtracing/coresight/coresight-tmc-etr.c b/drivers/hwtracing/coresight/coresight-tmc-etr.c index daad52146140..f684283890d3 100644 --- a/drivers/hwtracing/coresight/coresight-tmc-etr.c +++ b/drivers/hwtracing/coresight/coresight-tmc-etr.c @@ -991,6 +991,9 @@ static int tmc_etr_enable_hw(struct tmc_drvdata *drvdata, * this on. */ rc = tmc_etr_enable_catu(drvdata, etr_buf); + if (rc) + return rc; + rc = coresight_claim_device(drvdata->base); if (!rc) { drvdata->etr_buf = etr_buf; __tmc_etr_enable_hw(drvdata); @@ -1077,6 +1080,7 @@ static void tmc_etr_disable_hw(struct tmc_drvdata *drvdata) __tmc_etr_disable_hw(drvdata); /* Disable CATU device if this ETR is connected to one */ tmc_etr_disable_catu(drvdata); + coresight_disclaim_device(drvdata->base); /* Reset the ETR buf used by hardware */ drvdata->etr_buf = NULL; } |