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-rw-r--r--drivers/w1/Kconfig1
-rw-r--r--drivers/w1/Makefile1
-rw-r--r--drivers/w1/masters/Kconfig1
-rw-r--r--drivers/w1/masters/ds2482.c23
-rw-r--r--drivers/w1/masters/ds2490.c22
-rw-r--r--drivers/w1/masters/matrox_w1.c16
-rw-r--r--drivers/w1/masters/mxc_w1.c10
-rw-r--r--drivers/w1/slaves/Kconfig1
-rw-r--r--drivers/w1/slaves/w1_ds2405.c12
-rw-r--r--drivers/w1/slaves/w1_ds2408.c76
-rw-r--r--drivers/w1/slaves/w1_ds2423.c15
-rw-r--r--drivers/w1/slaves/w1_smem.c16
-rw-r--r--drivers/w1/slaves/w1_therm.c16
-rw-r--r--drivers/w1/w1.c11
-rw-r--r--drivers/w1/w1_family.c11
-rw-r--r--drivers/w1/w1_int.c11
-rw-r--r--drivers/w1/w1_internal.h11
-rw-r--r--drivers/w1/w1_io.c14
-rw-r--r--drivers/w1/w1_netlink.c11
-rw-r--r--drivers/w1/w1_netlink.h11
20 files changed, 73 insertions, 217 deletions
diff --git a/drivers/w1/Kconfig b/drivers/w1/Kconfig
index dbb41f45af8a..03dd57581df7 100644
--- a/drivers/w1/Kconfig
+++ b/drivers/w1/Kconfig
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0-only
menuconfig W1
tristate "Dallas's 1-wire support"
depends on HAS_IOMEM
diff --git a/drivers/w1/Makefile b/drivers/w1/Makefile
index 6bb0b54965f2..1ff0d42b7879 100644
--- a/drivers/w1/Makefile
+++ b/drivers/w1/Makefile
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0-only
#
# Makefile for the Dallas's 1-wire bus.
#
diff --git a/drivers/w1/masters/Kconfig b/drivers/w1/masters/Kconfig
index 00827d2897b5..7ae260577901 100644
--- a/drivers/w1/masters/Kconfig
+++ b/drivers/w1/masters/Kconfig
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0-only
#
# 1-wire bus master configuration
#
diff --git a/drivers/w1/masters/ds2482.c b/drivers/w1/masters/ds2482.c
index 8b5e598ffdb3..b471779c3e2c 100644
--- a/drivers/w1/masters/ds2482.c
+++ b/drivers/w1/masters/ds2482.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
/**
* ds2482.c - provides i2c to w1-master bridge(s)
* Copyright (C) 2005 Ben Gardner <bgardner@wabtec.com>
@@ -7,10 +8,6 @@
* There are two variations: -100 and -800, which have 1 or 8 1-wire ports.
* The complete datasheet can be obtained from MAXIM's website at:
* http://www.maxim-ic.com/quick_view2.cfm/qv_pk/4382
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
*/
#include <linux/module.h>
@@ -37,6 +34,11 @@ module_param_named(active_pullup, ds2482_active_pullup, int, 0644);
MODULE_PARM_DESC(active_pullup, "Active pullup (apply to all buses): " \
"0-disable, 1-enable (default)");
+/* extra configurations - e.g. 1WS */
+static int extra_config;
+module_param(extra_config, int, S_IRUGO | S_IWUSR);
+MODULE_PARM_DESC(extra_config, "Extra Configuration settings 1=APU,2=PPM,3=SPU,8=1WS");
+
/**
* The DS2482 registers - there are 3 registers that are addressed by a read
* pointer. The read pointer is set by the last command executed.
@@ -70,8 +72,6 @@ MODULE_PARM_DESC(active_pullup, "Active pullup (apply to all buses): " \
#define DS2482_REG_CFG_PPM 0x02 /* presence pulse masking */
#define DS2482_REG_CFG_APU 0x01 /* active pull-up */
-/* extra configurations - e.g. 1WS */
-static int extra_config;
/**
* Write and verify codes for the CHANNEL_SELECT command (DS2482-800 only).
@@ -130,6 +130,8 @@ struct ds2482_data {
*/
static inline u8 ds2482_calculate_config(u8 conf)
{
+ conf |= extra_config;
+
if (ds2482_active_pullup)
conf |= DS2482_REG_CFG_APU;
@@ -405,7 +407,7 @@ static u8 ds2482_w1_reset_bus(void *data)
/* If the chip did reset since detect, re-config it */
if (err & DS2482_REG_STS_RST)
ds2482_send_cmd_data(pdev, DS2482_CMD_WRITE_CONFIG,
- ds2482_calculate_config(extra_config));
+ ds2482_calculate_config(0x00));
}
mutex_unlock(&pdev->access_lock);
@@ -431,7 +433,8 @@ static u8 ds2482_w1_set_pullup(void *data, int delay)
ds2482_wait_1wire_idle(pdev);
/* note: it seems like both SPU and APU have to be set! */
retval = ds2482_send_cmd_data(pdev, DS2482_CMD_WRITE_CONFIG,
- ds2482_calculate_config(extra_config|DS2482_REG_CFG_SPU|DS2482_REG_CFG_APU));
+ ds2482_calculate_config(DS2482_REG_CFG_SPU |
+ DS2482_REG_CFG_APU));
ds2482_wait_1wire_idle(pdev);
}
@@ -484,7 +487,7 @@ static int ds2482_probe(struct i2c_client *client,
/* Set all config items to 0 (off) */
ds2482_send_cmd_data(data, DS2482_CMD_WRITE_CONFIG,
- ds2482_calculate_config(extra_config));
+ ds2482_calculate_config(0x00));
mutex_init(&data->access_lock);
@@ -559,7 +562,5 @@ module_i2c_driver(ds2482_driver);
MODULE_AUTHOR("Ben Gardner <bgardner@wabtec.com>");
MODULE_DESCRIPTION("DS2482 driver");
-module_param(extra_config, int, S_IRUGO | S_IWUSR);
-MODULE_PARM_DESC(extra_config, "Extra Configuration settings 1=APU,2=PPM,3=SPU,8=1WS");
MODULE_LICENSE("GPL");
diff --git a/drivers/w1/masters/ds2490.c b/drivers/w1/masters/ds2490.c
index 0f4ecfcdb549..e17c8f70dcd0 100644
--- a/drivers/w1/masters/ds2490.c
+++ b/drivers/w1/masters/ds2490.c
@@ -1,22 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
/*
* ds2490.c USB to one wire bridge
*
* Copyright (c) 2004 Evgeniy Polyakov <zbr@ioremap.net>
- *
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <linux/module.h>
@@ -1016,15 +1002,15 @@ static int ds_probe(struct usb_interface *intf,
/* alternative 3, 1ms interrupt (greatly speeds search), 64 byte bulk */
alt = 3;
err = usb_set_interface(dev->udev,
- intf->altsetting[alt].desc.bInterfaceNumber, alt);
+ intf->cur_altsetting->desc.bInterfaceNumber, alt);
if (err) {
dev_err(&dev->udev->dev, "Failed to set alternative setting %d "
"for %d interface: err=%d.\n", alt,
- intf->altsetting[alt].desc.bInterfaceNumber, err);
+ intf->cur_altsetting->desc.bInterfaceNumber, err);
goto err_out_clear;
}
- iface_desc = &intf->altsetting[alt];
+ iface_desc = intf->cur_altsetting;
if (iface_desc->desc.bNumEndpoints != NUM_EP-1) {
pr_info("Num endpoints=%d. It is not DS9490R.\n",
iface_desc->desc.bNumEndpoints);
diff --git a/drivers/w1/masters/matrox_w1.c b/drivers/w1/masters/matrox_w1.c
index d83d7c99d81d..3110791a2f1c 100644
--- a/drivers/w1/masters/matrox_w1.c
+++ b/drivers/w1/masters/matrox_w1.c
@@ -1,22 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
/*
* matrox_w1.c
*
* Copyright (c) 2004 Evgeniy Polyakov <zbr@ioremap.net>
- *
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <asm/types.h>
diff --git a/drivers/w1/masters/mxc_w1.c b/drivers/w1/masters/mxc_w1.c
index 50b46c4399ea..c3b2095ef6a9 100644
--- a/drivers/w1/masters/mxc_w1.c
+++ b/drivers/w1/masters/mxc_w1.c
@@ -1,15 +1,7 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Copyright 2005-2008 Freescale Semiconductor, Inc. All Rights Reserved.
* Copyright 2008 Luotao Fu, kernel@pengutronix.de
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
*/
#include <linux/clk.h>
diff --git a/drivers/w1/slaves/Kconfig b/drivers/w1/slaves/Kconfig
index e22fdeddada1..37aaad26b373 100644
--- a/drivers/w1/slaves/Kconfig
+++ b/drivers/w1/slaves/Kconfig
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0-only
#
# 1-wire slaves configuration
#
diff --git a/drivers/w1/slaves/w1_ds2405.c b/drivers/w1/slaves/w1_ds2405.c
index 42a1e81060ce..86cd97309d87 100644
--- a/drivers/w1/slaves/w1_ds2405.c
+++ b/drivers/w1/slaves/w1_ds2405.c
@@ -1,19 +1,9 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
/*
* w1_ds2405.c
*
* Copyright (c) 2017 Maciej S. Szmigiero <mail@maciej.szmigiero.name>
* Based on w1_therm.c copyright (c) 2004 Evgeniy Polyakov <zbr@ioremap.net>
- *
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the therms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
*/
#include <linux/device.h>
diff --git a/drivers/w1/slaves/w1_ds2408.c b/drivers/w1/slaves/w1_ds2408.c
index b535d5ec35b6..edf0bc98012c 100644
--- a/drivers/w1/slaves/w1_ds2408.c
+++ b/drivers/w1/slaves/w1_ds2408.c
@@ -138,14 +138,37 @@ static ssize_t status_control_read(struct file *filp, struct kobject *kobj,
W1_F29_REG_CONTROL_AND_STATUS, buf);
}
+#ifdef CONFIG_W1_SLAVE_DS2408_READBACK
+static bool optional_read_back_valid(struct w1_slave *sl, u8 expected)
+{
+ u8 w1_buf[3];
+
+ if (w1_reset_resume_command(sl->master))
+ return false;
+
+ w1_buf[0] = W1_F29_FUNC_READ_PIO_REGS;
+ w1_buf[1] = W1_F29_REG_OUTPUT_LATCH_STATE;
+ w1_buf[2] = 0;
+
+ w1_write_block(sl->master, w1_buf, 3);
+
+ return (w1_read_8(sl->master) == expected);
+}
+#else
+static bool optional_read_back_valid(struct w1_slave *sl, u8 expected)
+{
+ return true;
+}
+#endif
+
static ssize_t output_write(struct file *filp, struct kobject *kobj,
struct bin_attribute *bin_attr, char *buf,
loff_t off, size_t count)
{
struct w1_slave *sl = kobj_to_w1_slave(kobj);
u8 w1_buf[3];
- u8 readBack;
unsigned int retries = W1_F29_RETRIES;
+ ssize_t bytes_written = -EIO;
if (count != 1 || off != 0)
return -EFAULT;
@@ -155,54 +178,33 @@ static ssize_t output_write(struct file *filp, struct kobject *kobj,
dev_dbg(&sl->dev, "mutex locked");
if (w1_reset_select_slave(sl))
- goto error;
+ goto out;
- while (retries--) {
+ do {
w1_buf[0] = W1_F29_FUNC_CHANN_ACCESS_WRITE;
w1_buf[1] = *buf;
w1_buf[2] = ~(*buf);
- w1_write_block(sl->master, w1_buf, 3);
- readBack = w1_read_8(sl->master);
+ w1_write_block(sl->master, w1_buf, 3);
- if (readBack != W1_F29_SUCCESS_CONFIRM_BYTE) {
- if (w1_reset_resume_command(sl->master))
- goto error;
- /* try again, the slave is ready for a command */
- continue;
+ if (w1_read_8(sl->master) == W1_F29_SUCCESS_CONFIRM_BYTE &&
+ optional_read_back_valid(sl, *buf)) {
+ bytes_written = 1;
+ goto out;
}
-#ifdef CONFIG_W1_SLAVE_DS2408_READBACK
- /* here the master could read another byte which
- would be the PIO reg (the actual pin logic state)
- since in this driver we don't know which pins are
- in and outs, there's no value to read the state and
- compare. with (*buf) so end this command abruptly: */
if (w1_reset_resume_command(sl->master))
- goto error;
+ goto out; /* unrecoverable error */
+ /* try again, the slave is ready for a command */
+ } while (--retries);
- /* go read back the output latches */
- /* (the direct effect of the write above) */
- w1_buf[0] = W1_F29_FUNC_READ_PIO_REGS;
- w1_buf[1] = W1_F29_REG_OUTPUT_LATCH_STATE;
- w1_buf[2] = 0;
- w1_write_block(sl->master, w1_buf, 3);
- /* read the result of the READ_PIO_REGS command */
- if (w1_read_8(sl->master) == *buf)
-#endif
- {
- /* success! */
- mutex_unlock(&sl->master->bus_mutex);
- dev_dbg(&sl->dev,
- "mutex unlocked, retries:%d", retries);
- return 1;
- }
- }
-error:
+out:
mutex_unlock(&sl->master->bus_mutex);
- dev_dbg(&sl->dev, "mutex unlocked in error, retries:%d", retries);
- return -EIO;
+ dev_dbg(&sl->dev, "%s, mutex unlocked retries:%d\n",
+ (bytes_written > 0) ? "succeeded" : "error", retries);
+
+ return bytes_written;
}
diff --git a/drivers/w1/slaves/w1_ds2423.c b/drivers/w1/slaves/w1_ds2423.c
index 050407c53b16..f4367282dcc1 100644
--- a/drivers/w1/slaves/w1_ds2423.c
+++ b/drivers/w1/slaves/w1_ds2423.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
/*
* w1_ds2423.c
*
@@ -6,20 +7,6 @@
* This driver will read and write the value of 4 counters to w1_slave file in
* sys filesystem.
* Inspired by the w1_therm and w1_ds2431 drivers.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the therms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <linux/kernel.h>
diff --git a/drivers/w1/slaves/w1_smem.c b/drivers/w1/slaves/w1_smem.c
index e556b0caff71..09afcf2a4204 100644
--- a/drivers/w1/slaves/w1_smem.c
+++ b/drivers/w1/slaves/w1_smem.c
@@ -1,22 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
/*
* w1_smem.c
*
* Copyright (c) 2004 Evgeniy Polyakov <zbr@ioremap.net>
- *
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the smems of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <asm/types.h>
diff --git a/drivers/w1/slaves/w1_therm.c b/drivers/w1/slaves/w1_therm.c
index 3c350dfbcd0b..e028e0092799 100644
--- a/drivers/w1/slaves/w1_therm.c
+++ b/drivers/w1/slaves/w1_therm.c
@@ -1,22 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
/*
* w1_therm.c
*
* Copyright (c) 2004 Evgeniy Polyakov <zbr@ioremap.net>
- *
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the therms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <asm/types.h>
diff --git a/drivers/w1/w1.c b/drivers/w1/w1.c
index 890c038c25f8..e58c7592008d 100644
--- a/drivers/w1/w1.c
+++ b/drivers/w1/w1.c
@@ -1,15 +1,6 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Copyright (c) 2004 Evgeniy Polyakov <zbr@ioremap.net>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
*/
#include <linux/delay.h>
diff --git a/drivers/w1/w1_family.c b/drivers/w1/w1_family.c
index f14ab0b340b5..97da4f156e9a 100644
--- a/drivers/w1/w1_family.c
+++ b/drivers/w1/w1_family.c
@@ -1,15 +1,6 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Copyright (c) 2004 Evgeniy Polyakov <zbr@ioremap.net>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
*/
#include <linux/spinlock.h>
diff --git a/drivers/w1/w1_int.c b/drivers/w1/w1_int.c
index 1c776178f598..b3e1792d9c49 100644
--- a/drivers/w1/w1_int.c
+++ b/drivers/w1/w1_int.c
@@ -1,15 +1,6 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Copyright (c) 2004 Evgeniy Polyakov <zbr@ioremap.net>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
*/
#include <linux/kernel.h>
diff --git a/drivers/w1/w1_internal.h b/drivers/w1/w1_internal.h
index 1623e2fdccc7..cb5a74e9939a 100644
--- a/drivers/w1/w1_internal.h
+++ b/drivers/w1/w1_internal.h
@@ -1,15 +1,6 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
* Copyright (c) 2004 Evgeniy Polyakov <zbr@ioremap.net>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
*/
#ifndef __W1_H
diff --git a/drivers/w1/w1_io.c b/drivers/w1/w1_io.c
index 0364d3329c52..db3c9522a8a2 100644
--- a/drivers/w1/w1_io.c
+++ b/drivers/w1/w1_io.c
@@ -1,15 +1,6 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Copyright (c) 2004 Evgeniy Polyakov <zbr@ioremap.net>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
*/
#include <asm/io.h>
@@ -432,8 +423,7 @@ int w1_reset_resume_command(struct w1_master *dev)
if (w1_reset_bus(dev))
return -1;
- /* This will make only the last matched slave perform a skip ROM. */
- w1_write_8(dev, W1_RESUME_CMD);
+ w1_write_8(dev, dev->slave_count > 1 ? W1_RESUME_CMD : W1_SKIP_ROM);
return 0;
}
EXPORT_SYMBOL_GPL(w1_reset_resume_command);
diff --git a/drivers/w1/w1_netlink.c b/drivers/w1/w1_netlink.c
index f2f099caeb77..fa490aa4407c 100644
--- a/drivers/w1/w1_netlink.c
+++ b/drivers/w1/w1_netlink.c
@@ -1,15 +1,6 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Copyright (c) 2003 Evgeniy Polyakov <zbr@ioremap.net>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
*/
#include <linux/slab.h>
diff --git a/drivers/w1/w1_netlink.h b/drivers/w1/w1_netlink.h
index f876772c0fb4..3041092e84b3 100644
--- a/drivers/w1/w1_netlink.h
+++ b/drivers/w1/w1_netlink.h
@@ -1,15 +1,6 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
* Copyright (c) 2003 Evgeniy Polyakov <zbr@ioremap.net>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
*/
#ifndef __W1_NETLINK_H
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