diff options
| author |   Kevin P. Fleming <kevin+linux@km6g.us> | 2020-05-30 08:29:56 -0400 |
|---|---|---|
| committer |   Alexandre Belloni <alexandre.belloni@bootlin.com> | 2020-06-06 00:16:24 +0200 |
| commit | 6e429f6b8c6b8f40874c50c1e8485783dd0f97a8 (patch) | |
| tree | 51c1bbc82f8bd2264bd17bce6b86bc5867783be1 /drivers | |
| parent | rtc: abx80x: Add Device Tree matching table (diff) | |
| download | wireguard-linux-6e429f6b8c6b8f40874c50c1e8485783dd0f97a8.tar.xz wireguard-linux-6e429f6b8c6b8f40874c50c1e8485783dd0f97a8.zip | |
rtc: abx80x: Provide debug feedback for invalid dt properties
When the user provides an invalid value for tc-diode or
tc-resistor generate a debug message instead of silently
ignoring it.
Signed-off-by: Kevin P. Fleming <kevin+linux@km6g.us>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Link: https://lore.kernel.org/r/20200530122956.360689-1-kevin+linux@km6g.us
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/rtc/rtc-abx80x.c | 17 |
1 files changed, 11 insertions, 6 deletions
diff --git a/drivers/rtc/rtc-abx80x.c b/drivers/rtc/rtc-abx80x.c index 67bf3b8cfe65..803725b3a02c 100644 --- a/drivers/rtc/rtc-abx80x.c +++ b/drivers/rtc/rtc-abx80x.c @@ -555,8 +555,9 @@ static const struct rtc_class_ops abx80x_rtc_ops = { .ioctl = abx80x_ioctl, }; -static int abx80x_dt_trickle_cfg(struct device_node *np) +static int abx80x_dt_trickle_cfg(struct i2c_client *client) { + struct device_node *np = client->dev.of_node; const char *diode; int trickle_cfg = 0; int i, ret; @@ -566,12 +567,14 @@ static int abx80x_dt_trickle_cfg(struct device_node *np) if (ret) return ret; - if (!strcmp(diode, "standard")) + if (!strcmp(diode, "standard")) { trickle_cfg |= ABX8XX_TRICKLE_STANDARD_DIODE; - else if (!strcmp(diode, "schottky")) + } else if (!strcmp(diode, "schottky")) { trickle_cfg |= ABX8XX_TRICKLE_SCHOTTKY_DIODE; - else + } else { + dev_dbg(&client->dev, "Invalid tc-diode value: %s\n", diode); return -EINVAL; + } ret = of_property_read_u32(np, "abracon,tc-resistor", &tmp); if (ret) @@ -581,8 +584,10 @@ static int abx80x_dt_trickle_cfg(struct device_node *np) if (trickle_resistors[i] == tmp) break; - if (i == sizeof(trickle_resistors)) + if (i == sizeof(trickle_resistors)) { + dev_dbg(&client->dev, "Invalid tc-resistor value: %u\n", tmp); return -EINVAL; + } return (trickle_cfg | i); } @@ -794,7 +799,7 @@ static int abx80x_probe(struct i2c_client *client, } if (np && abx80x_caps[part].has_tc) - trickle_cfg = abx80x_dt_trickle_cfg(np); + trickle_cfg = abx80x_dt_trickle_cfg(client); if (trickle_cfg > 0) { dev_info(&client->dev, "Enabling trickle charger: %02x\n", |