diff options
| author | Suzuki K Poulose <suzuki.poulose@arm.com> | 2016-08-25 15:19:05 -0600 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-08-31 13:05:43 +0200 |
| commit | 9486295ad159fac87eb05bd683445be06a3b69f5 (patch) | |
| tree | 816579242f76e6481e8900d150391a17e646a438 /drivers/hwtracing/coresight/coresight-replicator.c | |
| parent | 7f73b0b9faa11446f73dba02811f928a230773c5 (diff) | |
| download | linux-9486295ad159fac87eb05bd683445be06a3b69f5.tar.bz2 | |
coresight: Use local coresight_desc instances
Each coresight device prepares a description for coresight_register()
in struct coresight_desc. Once we register the device, the description is
useless and can be freed. The coresight_desc is small enough (48bytes on
64bit)i to be allocated on the stack. Hence use an automatic variable to
avoid a needless dynamic allocation and wasting the memory(which will only
be free'd when the device is destroyed).
Cc: Mathieu Poirier <mathieu.poirier@linaro.org>
Cc: Pratik Patel <pratikp@codeaurora.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-replicator.c')
| -rw-r--r-- | drivers/hwtracing/coresight/coresight-replicator.c | 20 |
1 files changed, 7 insertions, 13 deletions
diff --git a/drivers/hwtracing/coresight/coresight-replicator.c b/drivers/hwtracing/coresight/coresight-replicator.c index c6982e312e15..3756e71cb8f5 100644 --- a/drivers/hwtracing/coresight/coresight-replicator.c +++ b/drivers/hwtracing/coresight/coresight-replicator.c @@ -69,7 +69,7 @@ static int replicator_probe(struct platform_device *pdev) struct device *dev = &pdev->dev; struct coresight_platform_data *pdata = NULL; struct replicator_drvdata *drvdata; - struct coresight_desc *desc; + struct coresight_desc desc = { 0 }; struct device_node *np = pdev->dev.of_node; if (np) { @@ -95,18 +95,12 @@ static int replicator_probe(struct platform_device *pdev) pm_runtime_enable(&pdev->dev); platform_set_drvdata(pdev, drvdata); - desc = devm_kzalloc(dev, sizeof(*desc), GFP_KERNEL); - if (!desc) { - ret = -ENOMEM; - goto out_disable_pm; - } - - desc->type = CORESIGHT_DEV_TYPE_LINK; - desc->subtype.link_subtype = CORESIGHT_DEV_SUBTYPE_LINK_SPLIT; - desc->ops = &replicator_cs_ops; - desc->pdata = pdev->dev.platform_data; - desc->dev = &pdev->dev; - drvdata->csdev = coresight_register(desc); + desc.type = CORESIGHT_DEV_TYPE_LINK; + desc.subtype.link_subtype = CORESIGHT_DEV_SUBTYPE_LINK_SPLIT; + desc.ops = &replicator_cs_ops; + desc.pdata = pdev->dev.platform_data; + desc.dev = &pdev->dev; + drvdata->csdev = coresight_register(&desc); if (IS_ERR(drvdata->csdev)) { ret = PTR_ERR(drvdata->csdev); goto out_disable_pm; |