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coresight: tmc: Report DMA setup failures

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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>
This commit is contained in:
Suzuki K Poulose 2019-04-25 13:52:41 -06:00 committed by Greg Kroah-Hartman
parent 61810404b4
commit 08be874775
1 changed files with 6 additions and 1 deletions
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7
drivers/hwtracing/coresight/coresight-tmc.c
View file

@ -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)