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coresight: Use devm_bitmap_zalloc when applicable

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'drvdata->chs.guaranteed' is a bitmap. So use 'devm_bitmap_kzalloc()' to
simplify code, improve the semantic and avoid some open-coded arithmetic
in allocator arguments.

Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Link: https://lore.kernel.org/r/a4b8454f560b70cedf0e4d06275787f08d576ee5.1635964610.git.christophe.jaillet@wanadoo.fr
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
This commit is contained in:
Christophe JAILLET 2021-11-03 19:39:18 +01:00 committed by Mathieu Poirier
parent fa55b7dcdc
commit 934a5dc154
1 changed files with 3 additions and 7 deletions
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10
drivers/hwtracing/coresight/coresight-stm.c
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@ -856,13 +856,11 @@ static int stm_probe(struct amba_device *adev, const struct amba_id *id)
{
int ret;
void __iomem *base;
unsigned long *guaranteed;
struct device *dev = &adev->dev;
struct coresight_platform_data *pdata = NULL;
struct stm_drvdata *drvdata;
struct resource *res = &adev->res;
struct resource ch_res;
size_t bitmap_size;
struct coresight_desc desc = { 0 };
desc.name = coresight_alloc_device_name(&stm_devs, dev);
@ -904,12 +902,10 @@ static int stm_probe(struct amba_device *adev, const struct amba_id *id)
else
drvdata->numsp = stm_num_stimulus_port(drvdata);
bitmap_size = BITS_TO_LONGS(drvdata->numsp) * sizeof(long);
guaranteed = devm_kzalloc(dev, bitmap_size, GFP_KERNEL);
if (!guaranteed)
drvdata->chs.guaranteed = devm_bitmap_zalloc(dev, drvdata->numsp,
GFP_KERNEL);
if (!drvdata->chs.guaranteed)
return -ENOMEM;
drvdata->chs.guaranteed = guaranteed;
spin_lock_init(&drvdata->spinlock);