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Subject[PATCH 2/5] nvmem: mtk-efuse: use stack for nvmem_config instead of malloc'ing it
Date
nvmem_register() copies all the members of nvmem_config to
nvmem_device. So, nvmem_config is one-time use data during
probing. There is no point to keep it until the driver detach.
Using stack should be no problem because nvmem_config is pretty
small.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
---

drivers/nvmem/mtk-efuse.c | 24 ++++++++++--------------
1 file changed, 10 insertions(+), 14 deletions(-)

diff --git a/drivers/nvmem/mtk-efuse.c b/drivers/nvmem/mtk-efuse.c
index 32fd572..fa7a0f6 100644
--- a/drivers/nvmem/mtk-efuse.c
+++ b/drivers/nvmem/mtk-efuse.c
@@ -49,7 +49,7 @@ static int mtk_efuse_probe(struct platform_device *pdev)
struct device *dev = &pdev->dev;
struct resource *res;
struct nvmem_device *nvmem;
- struct nvmem_config *econfig;
+ struct nvmem_config econfig = {};
void __iomem *base;

res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
@@ -57,19 +57,15 @@ static int mtk_efuse_probe(struct platform_device *pdev)
if (IS_ERR(base))
return PTR_ERR(base);

- econfig = devm_kzalloc(dev, sizeof(*econfig), GFP_KERNEL);
- if (!econfig)
- return -ENOMEM;
-
- econfig->stride = 4;
- econfig->word_size = 4;
- econfig->reg_read = mtk_reg_read;
- econfig->reg_write = mtk_reg_write;
- econfig->size = resource_size(res);
- econfig->priv = base;
- econfig->dev = dev;
- econfig->owner = THIS_MODULE;
- nvmem = nvmem_register(econfig);
+ econfig.stride = 4;
+ econfig.word_size = 4;
+ econfig.reg_read = mtk_reg_read;
+ econfig.reg_write = mtk_reg_write;
+ econfig.size = resource_size(res);
+ econfig.priv = base;
+ econfig.dev = dev;
+ econfig.owner = THIS_MODULE;
+ nvmem = nvmem_register(&econfig);
if (IS_ERR(nvmem))
return PTR_ERR(nvmem);

--
2.7.4
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