Update Linux to v5.4.2
Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/drivers/rtc/rtc-m41t80.c b/drivers/rtc/rtc-m41t80.c
index ad03e2f..5f46f85 100644
--- a/drivers/rtc/rtc-m41t80.c
+++ b/drivers/rtc/rtc-m41t80.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
/*
* I2C client/driver for the ST M41T80 family of i2c rtc chips.
*
@@ -6,11 +7,6 @@
* Based on m41t00.c by Mark A. Greer <mgreer@mvista.com>
*
* 2006 (c) mycable GmbH
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
*/
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
@@ -217,7 +213,7 @@
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 +270,11 @@
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 +284,12 @@
{
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");
}
@@ -393,7 +392,7 @@
alrm->time.tm_min = bcd2bin(alarmvals[3] & 0x7f);
alrm->time.tm_hour = bcd2bin(alarmvals[2] & 0x3f);
alrm->time.tm_mday = bcd2bin(alarmvals[1] & 0x3f);
- alrm->time.tm_mon = bcd2bin(alarmvals[0] & 0x3f);
+ alrm->time.tm_mon = bcd2bin(alarmvals[0] & 0x3f) - 1;
alrm->enabled = !!(alarmvals[0] & M41T80_ALMON_AFE);
alrm->pending = (flags & M41T80_FLAGS_AF) && alrm->enabled;
@@ -745,7 +744,7 @@
return -EINVAL;
wdt_margin = new_margin;
wdt_ping();
- /* Fall */
+ /* Fall through */
case WDIOC_GETTIMEOUT:
return put_user(wdt_margin, (int __user *)arg);
@@ -799,7 +798,7 @@
*/
wdt_is_open = 1;
mutex_unlock(&m41t80_rtc_mutex);
- return nonseekable_open(inode, file);
+ return stream_open(inode, file);
}
return -ENODEV;
}
@@ -873,7 +872,7 @@
static int m41t80_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
- struct i2c_adapter *adapter = to_i2c_adapter(client->dev.parent);
+ struct i2c_adapter *adapter = client->adapter;
int rc = 0;
struct rtc_time tm;
struct m41t80_data *m41t80_data = NULL;
@@ -939,11 +938,7 @@
if (m41t80_data->features & M41T80_FEATURE_HT) {
m41t80_rtc_read_time(&client->dev, &tm);
dev_info(&client->dev, "HT bit was set!\n");
- dev_info(&client->dev,
- "Power Down at %04i-%02i-%02i %02i:%02i:%02i\n",
- tm.tm_year + 1900,
- tm.tm_mon + 1, tm.tm_mday, tm.tm_hour,
- tm.tm_min, tm.tm_sec);
+ dev_info(&client->dev, "Power Down at %ptR\n", &tm);
}
rc = i2c_smbus_write_byte_data(client, M41T80_REG_ALARM_HOUR,
rc & ~M41T80_ALHOUR_HT);