diff options
| author | Suzuki K Poulose <suzuki.poulose@arm.com> | 2019-04-25 22:52:41 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-04-25 23:00:15 +0300 |
| commit | 08be874775f13a0acffff864440d10b8b1397912 (patch) | |
| tree | 5e86500bdbf517f662d931d8e783e8434136ac35 /drivers/hwtracing | |
| parent | 61810404b43fb0f7195cd947aef903ac90ea6989 (diff) | |
| download | linux-08be874775f13a0acffff864440d10b8b1397912.tar.xz | |
coresight: tmc: Report DMA setup failures
If we failed to setup the DMA mask for TMC-ETR, report the
error before failing the probe.
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')
| -rw-r--r-- | drivers/hwtracing/coresight/coresight-tmc.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/drivers/hwtracing/coresight/coresight-tmc.c b/drivers/hwtracing/coresight/coresight-tmc.c index 2a02da3d630f..647b6aa93554 100644 --- a/drivers/hwtracing/coresight/coresight-tmc.c +++ b/drivers/hwtracing/coresight/coresight-tmc.c @@ -340,6 +340,8 @@ static inline bool tmc_etr_can_use_sg(struct tmc_drvdata *drvdata) static int tmc_etr_setup_caps(struct tmc_drvdata *drvdata, u32 devid, void *dev_caps) { + int rc; + u32 dma_mask = 0; /* Set the unadvertised capabilities */ @@ -369,7 +371,10 @@ static int tmc_etr_setup_caps(struct tmc_drvdata *drvdata, dma_mask = 40; } - return dma_set_mask_and_coherent(drvdata->dev, DMA_BIT_MASK(dma_mask)); + rc = dma_set_mask_and_coherent(drvdata->dev, DMA_BIT_MASK(dma_mask)); + if (rc) + dev_err(drvdata->dev, "Failed to setup DMA mask: %d\n", rc); + return rc; } static int tmc_probe(struct amba_device *adev, const struct amba_id *id) |