diff options
| author |   Masahiro Yamada <yamada.masahiro@socionext.com> | 2017-10-21 01:57:38 +0900 |
|---|---|---|
| committer |   Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-11-08 13:54:16 +0100 |
| commit | 01d35cabd5abda28c352f63c87109c477fc84886 (patch) | |
| tree | 15aea3f532ec22ddc7994933b3db97a710c0763a /drivers/nvmem/imx-iim.c | |
| parent | thunderbolt: tb: fix use after free in tb_activate_pcie_devices (diff) | |
| download | linux-dev-01d35cabd5abda28c352f63c87109c477fc84886.tar.xz linux-dev-01d35cabd5abda28c352f63c87109c477fc84886.zip | |
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/imx-iim.c')
| -rw-r--r-- | drivers/nvmem/imx-iim.c | 27 |
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); |