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authorMasahiro Yamada <yamada.masahiro@socionext.com>2017-10-21 01:57:38 +0900
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2017-11-08 13:54:16 +0100
commit01d35cabd5abda28c352f63c87109c477fc84886 (patch)
tree15aea3f532ec22ddc7994933b3db97a710c0763a /drivers/nvmem
parenta2e373438f72391493a4425efc1b82030b6b4fd5 (diff)
nvmem: imx-iim: use stack for nvmem_config instead of malloc'ing it
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> Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/nvmem')
-rw-r--r--drivers/nvmem/imx-iim.c27
1 files changed, 12 insertions, 15 deletions
diff --git a/drivers/nvmem/imx-iim.c b/drivers/nvmem/imx-iim.c
index 52ff65e0673f..a5992602709a 100644
--- a/drivers/nvmem/imx-iim.c
+++ b/drivers/nvmem/imx-iim.c
@@ -34,7 +34,6 @@ struct imx_iim_drvdata {
struct iim_priv {
void __iomem *base;
struct clk *clk;
- struct nvmem_config nvmem;
};
static int imx_iim_read(void *context, unsigned int offset,
@@ -108,7 +107,7 @@ static int imx_iim_probe(struct platform_device *pdev)
struct resource *res;
struct iim_priv *iim;
struct nvmem_device *nvmem;
- struct nvmem_config *cfg;
+ struct nvmem_config cfg = {};
const struct imx_iim_drvdata *drvdata = NULL;
iim = devm_kzalloc(dev, sizeof(*iim), GFP_KERNEL);
@@ -130,19 +129,17 @@ static int imx_iim_probe(struct platform_device *pdev)
if (IS_ERR(iim->clk))
return PTR_ERR(iim->clk);
- cfg = &iim->nvmem;
-
- cfg->name = "imx-iim",
- cfg->read_only = true,
- cfg->word_size = 1,
- cfg->stride = 1,
- cfg->owner = THIS_MODULE,
- cfg->reg_read = imx_iim_read,
- cfg->dev = dev;
- cfg->size = drvdata->nregs;
- cfg->priv = iim;
-
- nvmem = nvmem_register(cfg);
+ cfg.name = "imx-iim",
+ cfg.read_only = true,
+ cfg.word_size = 1,
+ cfg.stride = 1,
+ cfg.owner = THIS_MODULE,
+ cfg.reg_read = imx_iim_read,
+ cfg.dev = dev;
+ cfg.size = drvdata->nregs;
+ cfg.priv = iim;
+
+ nvmem = nvmem_register(&cfg);
if (IS_ERR(nvmem))
return PTR_ERR(nvmem);

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