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| author |   Maciej W. Rozycki <macro@linux-mips.org> | 2018-11-07 02:39:51 +0000 |
|---|---|---|
| committer |   Alexandre Belloni <alexandre.belloni@bootlin.com> | 2018-11-14 10:44:34 +0100 |
| commit | f1bd154d8838f9bddbe0f07292dd1c70a47c8b83 (patch) | |
| tree | 8b1028f7ef09446f72125af0be398992594f765e /drivers/rtc/rtc-m41t80.c | |
| parent | rtc: m41t80: Correct alarm month range with RTC reads (diff) | |
| download | linux-dev-f1bd154d8838f9bddbe0f07292dd1c70a47c8b83.tar.xz linux-dev-f1bd154d8838f9bddbe0f07292dd1c70a47c8b83.zip | |
rtc: m41t80: Complete error propagation from SMBus calls
Complement commit 85d77047c4ea ("drivers/rtc/rtc-m41t80.c: propagate
error value from smbus functions") and correct the remaining places that
fail to propagate the error code from SMBus calls.
Signed-off-by: Maciej W. Rozycki <macro@linux-mips.org>
References: 85d77047c4ea ("drivers/rtc/rtc-m41t80.c: propagate error value from smbus functions")
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Diffstat (limited to 'drivers/rtc/rtc-m41t80.c')
| -rw-r--r-- | drivers/rtc/rtc-m41t80.c | 13 |
1 files changed, 8 insertions, 5 deletions
diff --git a/drivers/rtc/rtc-m41t80.c b/drivers/rtc/rtc-m41t80.c index 7431a795a624..a39138932379 100644 --- a/drivers/rtc/rtc-m41t80.c +++ b/drivers/rtc/rtc-m41t80.c @@ -217,7 +217,7 @@ static int m41t80_rtc_read_time(struct device *dev, struct rtc_time *tm) sizeof(buf), buf); if (err < 0) { dev_err(&client->dev, "Unable to read date\n"); - return -EIO; + return err; } tm->tm_sec = bcd2bin(buf[M41T80_REG_SEC] & 0x7f); @@ -274,10 +274,11 @@ static int m41t80_rtc_set_time(struct device *dev, struct rtc_time *tm) if (flags < 0) return flags; - if (i2c_smbus_write_byte_data(client, M41T80_REG_FLAGS, - flags & ~M41T80_FLAGS_OF)) { + err = i2c_smbus_write_byte_data(client, M41T80_REG_FLAGS, + flags & ~M41T80_FLAGS_OF); + if (err < 0) { dev_err(&client->dev, "Unable to write flags register\n"); - return -EIO; + return err; } return err; @@ -287,10 +288,12 @@ static int m41t80_rtc_proc(struct device *dev, struct seq_file *seq) { struct i2c_client *client = to_i2c_client(dev); struct m41t80_data *clientdata = i2c_get_clientdata(client); - u8 reg; + int reg; if (clientdata->features & M41T80_FEATURE_BL) { reg = i2c_smbus_read_byte_data(client, M41T80_REG_FLAGS); + if (reg < 0) + return reg; seq_printf(seq, "battery\t\t: %s\n", (reg & M41T80_FLAGS_BATT_LOW) ? "exhausted" : "ok"); } |