diff options
| author | Wolfram Sang <wsa@the-dreams.de> | 2015-08-21 00:40:46 +0300 |
|---|---|---|
| committer | Wolfram Sang <wsa@the-dreams.de> | 2015-09-03 12:54:41 +0300 |
| commit | fce388afd633cdf20844e17f47b0d97c7ee06e69 (patch) | |
| tree | 4e6141c644bce1eb3ca47858d38f6974bde0cb69 /drivers/i2c/muxes | |
| parent | bdbf4a29ee5bbe5b6743ba47bc7b10ec2cba8b21 (diff) | |
| download | linux-fce388afd633cdf20844e17f47b0d97c7ee06e69.tar.xz | |
i2c: mux: reg: simplify register size checking
Checking was done at three different locations, just do it once and
properly at probing time.
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Tested-by: York Sun <yorksun@freescale.com>
Diffstat (limited to 'drivers/i2c/muxes')
| -rw-r--r-- | drivers/i2c/muxes/i2c-mux-reg.c | 17 |
1 files changed, 6 insertions, 11 deletions
diff --git a/drivers/i2c/muxes/i2c-mux-reg.c b/drivers/i2c/muxes/i2c-mux-reg.c index 57ec57e0da52..fb5b55a0cf9d 100644 --- a/drivers/i2c/muxes/i2c-mux-reg.c +++ b/drivers/i2c/muxes/i2c-mux-reg.c @@ -59,9 +59,6 @@ static int i2c_mux_reg_set(const struct regmux *mux, unsigned int chan_id) if (!mux->data.write_only) ioread8(mux->data.reg); break; - default: - pr_err("Invalid register size\n"); - return -EINVAL; } return 0; @@ -155,10 +152,6 @@ static int i2c_mux_reg_probe_dt(struct regmux *mux, /* map address from "reg" if exists */ if (of_address_to_resource(np, 0, &res)) { mux->data.reg_size = resource_size(&res); - if (mux->data.reg_size > 4) { - dev_err(&pdev->dev, "Invalid address size\n"); - return -EINVAL; - } mux->data.reg = devm_ioremap_resource(&pdev->dev, &res); if (IS_ERR(mux->data.reg)) return PTR_ERR(mux->data.reg); @@ -211,15 +204,17 @@ static int i2c_mux_reg_probe(struct platform_device *pdev) "Register not set, using platform resource\n"); res = platform_get_resource(pdev, IORESOURCE_MEM, 0); mux->data.reg_size = resource_size(res); - if (mux->data.reg_size > 4) { - dev_err(&pdev->dev, "Invalid resource size\n"); - return -EINVAL; - } mux->data.reg = devm_ioremap_resource(&pdev->dev, res); if (IS_ERR(mux->data.reg)) return PTR_ERR(mux->data.reg); } + if (mux->data.reg_size != 4 && mux->data.reg_size != 2 && + mux->data.reg_size != 1) { + dev_err(&pdev->dev, "Invalid register size\n"); + return -EINVAL; + } + mux->adap = devm_kzalloc(&pdev->dev, sizeof(*mux->adap) * mux->data.n_values, GFP_KERNEL); |