diff options
| author | Gao Pan <pandy.gao@nxp.com> | 2018-01-19 14:30:36 +0800 |
|---|---|---|
| committer | Dong Aisheng <aisheng.dong@nxp.com> | 2019-11-25 15:46:18 +0800 |
| commit | c846995d43e1d236f059e8c0e0284f2417d10de9 (patch) | |
| tree | 6e60922c51775b54053d4532d28eefc385b7bdac /drivers | |
| parent | 96586cb843c428d65e74c69ebbe6ce72eb4ed717 (diff) | |
MLK-17426 imx: lpi2c: add debug message when i2c peripheral clk doesn't work
add debug message when i2c peripheral clk rate is 0, then
directly return -EINVAL.
Signed-off-by: Gao Pan <pandy.gao@nxp.com>
Reviewed-by: Andy Duan <fugang.duan@nxp.com>
(Vipul: Fixed merge conflicts)
Signed-off-by: Vipul Kumar <vipul_kumar@mentor.com>
(cherry picked from commit 1e6707bb5e0cd0dcf72af71f01792fe4e3721e7f)
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/i2c/busses/i2c-imx-lpi2c.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/drivers/i2c/busses/i2c-imx-lpi2c.c b/drivers/i2c/busses/i2c-imx-lpi2c.c index 780ff70f42e5..2d78378b6959 100644 --- a/drivers/i2c/busses/i2c-imx-lpi2c.c +++ b/drivers/i2c/busses/i2c-imx-lpi2c.c @@ -216,7 +216,12 @@ static int lpi2c_imx_config(struct lpi2c_imx_struct *lpi2c_imx) lpi2c_imx_set_mode(lpi2c_imx); - clk_rate = clk_get_rate(lpi2c_imx->clk); + clk_rate = clk_get_rate(lpi2c_imx->clk_per); + if (!clk_rate) { + dev_dbg(&lpi2c_imx->adapter.dev, "clk_per rate is 0\n"); + return -EINVAL; + } + if (lpi2c_imx->mode == HS || lpi2c_imx->mode == ULTRA_FAST) filt = 0; else |