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Commit 21a2cb56 authored by Linus Torvalds's avatar Linus Torvalds
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Merge branch 'char-misc-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc 

* 'char-misc-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc:
  isl29020: Remove a redundant semi-colon from return statement
  BMP085: Remove redundant semi-colon from return statement
  drivers:misc: ti-st: DEBUG uart, baud rate mods
  drivers:misc: ti-st: flush UART upon fw failure
  drivers:misc: ti-st: protect registrations
  char_dev.c: fix up some whitespace errors
  s390: tape_class.h: remove kobj_map.h inclusion
  misc: ad525x_dpot: Add support for SPI module device table matching
parents c99516ca 2a5ac6f7
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Showing with 126 additions and 126 deletions
drivers/misc/ad525x_dpot-i2c.c
View file @ 21a2cb56
/*
* Driver for the Analog Devices digital potentiometers (I2C bus)
*
* Copyright (C) 2010 Michael Hennerich, Analog Devices Inc.
* Copyright (C) 2010-2011 Michael Hennerich, Analog Devices Inc.
*
* Licensed under the GPL-2 or later.
*/
......@@ -11,7 +11,6 @@
#include "ad525x_dpot.h"
/* ------------------------------------------------------------------------- */
/* I2C bus functions */
static int write_d8(void *client, u8 val)
{
......@@ -60,18 +59,13 @@ static int __devinit ad_dpot_i2c_probe(struct i2c_client *client,
.bops = &bops,
};
struct ad_dpot_id dpot_id = {
.name = (char *) &id->name,
.devid = id->driver_data,
};
if (!i2c_check_functionality(client->adapter,
I2C_FUNC_SMBUS_WORD_DATA)) {
dev_err(&client->dev, "SMBUS Word Data not Supported\n");
return -EIO;
}
return ad_dpot_probe(&client->dev, &bdata, &dpot_id);
return ad_dpot_probe(&client->dev, &bdata, id->driver_data, id->name);
}
static int __devexit ad_dpot_i2c_remove(struct i2c_client *client)
......
drivers/misc/ad525x_dpot-spi.c
View file @ 21a2cb56
/*
* Driver for the Analog Devices digital potentiometers (SPI bus)
*
* Copyright (C) 2010 Michael Hennerich, Analog Devices Inc.
* Copyright (C) 2010-2011 Michael Hennerich, Analog Devices Inc.
*
* Licensed under the GPL-2 or later.
*/
......@@ -11,40 +11,6 @@
#include "ad525x_dpot.h"
static const struct ad_dpot_id ad_dpot_spi_devlist[] = {
{.name = "ad5160", .devid = AD5160_ID},
{.name = "ad5161", .devid = AD5161_ID},
{.name = "ad5162", .devid = AD5162_ID},
{.name = "ad5165", .devid = AD5165_ID},
{.name = "ad5200", .devid = AD5200_ID},
{.name = "ad5201", .devid = AD5201_ID},
{.name = "ad5203", .devid = AD5203_ID},
{.name = "ad5204", .devid = AD5204_ID},
{.name = "ad5206", .devid = AD5206_ID},
{.name = "ad5207", .devid = AD5207_ID},
{.name = "ad5231", .devid = AD5231_ID},
{.name = "ad5232", .devid = AD5232_ID},
{.name = "ad5233", .devid = AD5233_ID},
{.name = "ad5235", .devid = AD5235_ID},
{.name = "ad5260", .devid = AD5260_ID},
{.name = "ad5262", .devid = AD5262_ID},
{.name = "ad5263", .devid = AD5263_ID},
{.name = "ad5290", .devid = AD5290_ID},
{.name = "ad5291", .devid = AD5291_ID},
{.name = "ad5292", .devid = AD5292_ID},
{.name = "ad5293", .devid = AD5293_ID},
{.name = "ad7376", .devid = AD7376_ID},
{.name = "ad8400", .devid = AD8400_ID},
{.name = "ad8402", .devid = AD8402_ID},
{.name = "ad8403", .devid = AD8403_ID},
{.name = "adn2850", .devid = ADN2850_ID},
{.name = "ad5270", .devid = AD5270_ID},
{.name = "ad5271", .devid = AD5271_ID},
{}
};
/* ------------------------------------------------------------------------- */
/* SPI bus functions */
static int write8(void *client, u8 val)
{
......@@ -109,36 +75,16 @@ static const struct ad_dpot_bus_ops bops = {
.write_r8d8 = write16,
.write_r8d16 = write24,
};
static const struct ad_dpot_id *dpot_match_id(const struct ad_dpot_id *id,
char *name)
{
while (id->name && id->name[0]) {
if (strcmp(name, id->name) == 0)
return id;
id++;
}
return NULL;
}
static int __devinit ad_dpot_spi_probe(struct spi_device *spi)
{
char *name = spi->dev.platform_data;
const struct ad_dpot_id *dpot_id;
struct ad_dpot_bus_data bdata = {
.client = spi,
.bops = &bops,
};
dpot_id = dpot_match_id(ad_dpot_spi_devlist, name);
if (dpot_id == NULL) {
dev_err(&spi->dev, "%s not in supported device list", name);
return -ENODEV;
}
return ad_dpot_probe(&spi->dev, &bdata, dpot_id);
return ad_dpot_probe(&spi->dev, &bdata,
spi_get_device_id(spi)->driver_data,
spi_get_device_id(spi)->name);
}
static int __devexit ad_dpot_spi_remove(struct spi_device *spi)
......@@ -146,14 +92,47 @@ static int __devexit ad_dpot_spi_remove(struct spi_device *spi)
return ad_dpot_remove(&spi->dev);
}
static const struct spi_device_id ad_dpot_spi_id[] = {
{"ad5160", AD5160_ID},
{"ad5161", AD5161_ID},
{"ad5162", AD5162_ID},
{"ad5165", AD5165_ID},
{"ad5200", AD5200_ID},
{"ad5201", AD5201_ID},
{"ad5203", AD5203_ID},
{"ad5204", AD5204_ID},
{"ad5206", AD5206_ID},
{"ad5207", AD5207_ID},
{"ad5231", AD5231_ID},
{"ad5232", AD5232_ID},
{"ad5233", AD5233_ID},
{"ad5235", AD5235_ID},
{"ad5260", AD5260_ID},
{"ad5262", AD5262_ID},
{"ad5263", AD5263_ID},
{"ad5290", AD5290_ID},
{"ad5291", AD5291_ID},
{"ad5292", AD5292_ID},
{"ad5293", AD5293_ID},
{"ad7376", AD7376_ID},
{"ad8400", AD8400_ID},
{"ad8402", AD8402_ID},
{"ad8403", AD8403_ID},
{"adn2850", ADN2850_ID},
{"ad5270", AD5270_ID},
{"ad5271", AD5271_ID},
{}
};
MODULE_DEVICE_TABLE(spi, ad_dpot_spi_id);
static struct spi_driver ad_dpot_spi_driver = {
.driver = {
.name = "ad_dpot",
.bus = &spi_bus_type,
.owner = THIS_MODULE,
},
.probe = ad_dpot_spi_probe,
.remove = __devexit_p(ad_dpot_spi_remove),
.id_table = ad_dpot_spi_id,
};
static int __init ad_dpot_spi_init(void)
......
drivers/misc/ad525x_dpot.c
View file @ 21a2cb56
......@@ -64,7 +64,7 @@
* Author: Chris Verges <chrisv@cyberswitching.com>
*
* derived from ad5252.c
* Copyright (c) 2006 Michael Hennerich <hennerich@blackfin.uclinux.org>
* Copyright (c) 2006-2011 Michael Hennerich <hennerich@blackfin.uclinux.org>
*
* Licensed under the GPL-2 or later.
*/
......@@ -76,8 +76,6 @@
#include <linux/delay.h>
#include <linux/slab.h>
#define DRIVER_VERSION "0.2"
#include "ad525x_dpot.h"
/*
......@@ -687,8 +685,9 @@ inline void ad_dpot_remove_files(struct device *dev,
}
}
__devinit int ad_dpot_probe(struct device *dev,
struct ad_dpot_bus_data *bdata, const struct ad_dpot_id *id)
int __devinit ad_dpot_probe(struct device *dev,
struct ad_dpot_bus_data *bdata, unsigned long devid,
const char *name)
{
struct dpot_data *data;
......@@ -704,13 +703,13 @@ __devinit int ad_dpot_probe(struct device *dev,
mutex_init(&data->update_lock);
data->bdata = *bdata;
data->devid = id->devid;
data->devid = devid;
data->max_pos = 1 << DPOT_MAX_POS(data->devid);
data->max_pos = 1 << DPOT_MAX_POS(devid);
data->rdac_mask = data->max_pos - 1;
data->feat = DPOT_FEAT(data->devid);
data->uid = DPOT_UID(data->devid);
data->wipers = DPOT_WIPERS(data->devid);
data->feat = DPOT_FEAT(devid);
data->uid = DPOT_UID(devid);
data->wipers = DPOT_WIPERS(devid);
for (i = DPOT_RDAC0; i < MAX_RDACS; i++)
if (data->wipers & (1 << i)) {
......@@ -731,7 +730,7 @@ __devinit int ad_dpot_probe(struct device *dev,
}
dev_info(dev, "%s %d-Position Digital Potentiometer registered\n",
id->name, data->max_pos);
name, data->max_pos);
return 0;
......@@ -745,7 +744,7 @@ __devinit int ad_dpot_probe(struct device *dev,
dev_set_drvdata(dev, NULL);
exit:
dev_err(dev, "failed to create client for %s ID 0x%lX\n",
id->name, id->devid);
name, devid);
return err;
}
EXPORT_SYMBOL(ad_dpot_probe);
......@@ -770,4 +769,3 @@ MODULE_AUTHOR("Chris Verges <chrisv@cyberswitching.com>, "
"Michael Hennerich <hennerich@blackfin.uclinux.org>");
MODULE_DESCRIPTION("Digital potentiometer driver");
MODULE_LICENSE("GPL");
MODULE_VERSION(DRIVER_VERSION);
drivers/misc/ad525x_dpot.h
View file @ 21a2cb56
......@@ -208,12 +208,8 @@ struct ad_dpot_bus_data {
const struct ad_dpot_bus_ops *bops;
};
struct ad_dpot_id {
char *name;
unsigned long devid;
};
int ad_dpot_probe(struct device *dev, struct ad_dpot_bus_data *bdata, const struct ad_dpot_id *id);
int ad_dpot_probe(struct device *dev, struct ad_dpot_bus_data *bdata,
unsigned long devid, const char *name);
int ad_dpot_remove(struct device *dev);
#endif
drivers/misc/bmp085.c
View file @ 21a2cb56
......@@ -216,7 +216,7 @@ static s32 bmp085_get_temperature(struct bmp085_data *data, int *temperature)
*temperature = (x1+x2+8) >> 4;
exit:
return status;;
return status;
}
/*
......
drivers/misc/isl29020.c
View file @ 21a2cb56
......@@ -158,7 +158,7 @@ static int als_set_default_config(struct i2c_client *client)
dev_err(&client->dev, "default write failed.");
return retval;
}
return 0;;
return 0;
}
static int isl29020_probe(struct i2c_client *client,
......
drivers/misc/ti-st/st_core.c
View file @ 21a2cb56
......@@ -137,6 +137,8 @@ void st_send_frame(unsigned char chnl_id, struct st_data_s *st_gdata)
* st_reg_complete -
* to call registration complete callbacks
* of all protocol stack drivers
* This function is being called with spin lock held, protocol drivers are
* only expected to complete their waits and do nothing more than that.
*/
void st_reg_complete(struct st_data_s *st_gdata, char err)
{
......@@ -538,11 +540,12 @@ long st_register(struct st_proto_s *new_proto)
set_bit(ST_REG_IN_PROGRESS, &st_gdata->st_state);
st_recv = st_kim_recv;
/* enable the ST LL - to set default chip state */
st_ll_enable(st_gdata);
/* release lock previously held - re-locked below */
spin_unlock_irqrestore(&st_gdata->lock, flags);
/* enable the ST LL - to set default chip state */
st_ll_enable(st_gdata);
/* this may take a while to complete
* since it involves BT fw download
*/
......@@ -553,10 +556,13 @@ long st_register(struct st_proto_s *new_proto)
(test_bit(ST_REG_PENDING, &st_gdata->st_state))) {
pr_err(" KIM failure complete callback ");
st_reg_complete(st_gdata, err);
clear_bit(ST_REG_PENDING, &st_gdata->st_state);
}
return -EINVAL;
}
spin_lock_irqsave(&st_gdata->lock, flags);
clear_bit(ST_REG_IN_PROGRESS, &st_gdata->st_state);
st_recv = st_int_recv;
......@@ -576,10 +582,10 @@ long st_register(struct st_proto_s *new_proto)
if (st_gdata->is_registered[new_proto->chnl_id] == true) {
pr_err(" proto %d already registered ",
new_proto->chnl_id);
spin_unlock_irqrestore(&st_gdata->lock, flags);
return -EALREADY;
}
spin_lock_irqsave(&st_gdata->lock, flags);
add_channel_to_table(st_gdata, new_proto);
st_gdata->protos_registered++;
new_proto->write = st_write;
......@@ -619,7 +625,7 @@ long st_unregister(struct st_proto_s *proto)
spin_lock_irqsave(&st_gdata->lock, flags);
if (st_gdata->list[proto->chnl_id] == NULL) {
if (st_gdata->is_registered[proto->chnl_id] == false) {
pr_err(" chnl_id %d not registered", proto->chnl_id);
spin_unlock_irqrestore(&st_gdata->lock, flags);
return -EPROTONOSUPPORT;
......@@ -629,6 +635,10 @@ long st_unregister(struct st_proto_s *proto)
remove_channel_from_table(st_gdata, proto);
spin_unlock_irqrestore(&st_gdata->lock, flags);
/* paranoid check */
if (st_gdata->protos_registered < ST_EMPTY)
st_gdata->protos_registered = ST_EMPTY;
if ((st_gdata->protos_registered == ST_EMPTY) &&
(!test_bit(ST_REG_PENDING, &st_gdata->st_state))) {
pr_info(" all chnl_ids unregistered ");
......
drivers/misc/ti-st/st_kim.c
View file @ 21a2cb56
......@@ -469,37 +469,21 @@ long st_kim_start(void *kim_data)
/* wait for ldisc to be installed */
err = wait_for_completion_timeout(&kim_gdata->ldisc_installed,
msecs_to_jiffies(LDISC_TIME));
if (!err) { /* timeout */
pr_err("line disc installation timed out ");
kim_gdata->ldisc_install = 0;
pr_info("ldisc_install = 0");
sysfs_notify(&kim_gdata->kim_pdev->dev.kobj,
NULL, "install");
/* the following wait is never going to be completed,
* since the ldisc was never installed, hence serving
* as a mdelay of LDISC_TIME msecs */
err = wait_for_completion_timeout
(&kim_gdata->ldisc_installed,
msecs_to_jiffies(LDISC_TIME));
err = -ETIMEDOUT;
if (!err) {
/* ldisc installation timeout,
* flush uart, power cycle BT_EN */
pr_err("ldisc installation timeout");
err = st_kim_stop(kim_gdata);
continue;
} else {
/* ldisc installed now */
pr_info(" line discipline installed ");
pr_info("line discipline installed");
err = download_firmware(kim_gdata);
if (err != 0) {
/* ldisc installed but fw download failed,
* flush uart & power cycle BT_EN */
pr_err("download firmware failed");
kim_gdata->ldisc_install = 0;
pr_info("ldisc_install = 0");
sysfs_notify(&kim_gdata->kim_pdev->dev.kobj,
NULL, "install");
/* this wait might be completed, though in the
* tty_close() since the ldisc is already
* installed */
err = wait_for_completion_timeout
(&kim_gdata->ldisc_installed,
msecs_to_jiffies(LDISC_TIME));
err = -EINVAL;
err = st_kim_stop(kim_gdata);
continue;
} else { /* on success don't retry */
break;
......@@ -510,8 +494,14 @@ long st_kim_start(void *kim_data)
}
/**
* st_kim_stop - called from ST Core, on the last un-registration
* toggle low the chip enable gpio
* st_kim_stop - stop communication with chip.
* This can be called from ST Core/KIM, on the-
* (a) last un-register when chip need not be powered there-after,
* (b) upon failure to either install ldisc or download firmware.
* The function is responsible to (a) notify UIM about un-installation,
* (b) flush UART if the ldisc was installed.
* (c) reset BT_EN - pull down nshutdown at the end.
* (d) invoke platform's chip disabling routine.
*/
long st_kim_stop(void *kim_data)
{
......@@ -519,12 +509,16 @@ long st_kim_stop(void *kim_data)
struct kim_data_s *kim_gdata = (struct kim_data_s *)kim_data;
struct ti_st_plat_data *pdata =
kim_gdata->kim_pdev->dev.platform_data;
struct tty_struct *tty = kim_gdata->core_data->tty;
INIT_COMPLETION(kim_gdata->ldisc_installed);
/* Flush any pending characters in the driver and discipline. */
tty_ldisc_flush(kim_gdata->core_data->tty);
tty_driver_flush_buffer(kim_gdata->core_data->tty);
if (tty) { /* can be called before ldisc is installed */
/* Flush any pending characters in the driver and discipline. */
tty_ldisc_flush(tty);
tty_driver_flush_buffer(tty);
tty->ops->flush_buffer(tty);
}
/* send uninstall notification to UIM */
pr_info("ldisc_install = 0");
......@@ -579,6 +573,28 @@ static ssize_t show_install(struct device *dev,
return sprintf(buf, "%d\n", kim_data->ldisc_install);
}
#ifdef DEBUG
static ssize_t store_dev_name(struct device *dev,
struct device_attribute *attr, const char *buf, size_t count)
{
struct kim_data_s *kim_data = dev_get_drvdata(dev);
pr_debug("storing dev name >%s<", buf);
strncpy(kim_data->dev_name, buf, count);
pr_debug("stored dev name >%s<", kim_data->dev_name);
return count;
}
static ssize_t store_baud_rate(struct device *dev,
struct device_attribute *attr, const char *buf, size_t count)
{
struct kim_data_s *kim_data = dev_get_drvdata(dev);
pr_debug("storing baud rate >%s<", buf);
sscanf(buf, "%ld", &kim_data->baud_rate);
pr_debug("stored baud rate >%ld<", kim_data->baud_rate);
return count;
}
#endif /* if DEBUG */
static ssize_t show_dev_name(struct device *dev,
struct device_attribute *attr, char *buf)
{
......@@ -605,10 +621,18 @@ static struct kobj_attribute ldisc_install =
__ATTR(install, 0444, (void *)show_install, NULL);
static struct kobj_attribute uart_dev_name =
#ifdef DEBUG /* TODO: move this to debug-fs if possible */
__ATTR(dev_name, 0644, (void *)show_dev_name, (void *)store_dev_name);
#else
__ATTR(dev_name, 0444, (void *)show_dev_name, NULL);
#endif
static struct kobj_attribute uart_baud_rate =
#ifdef DEBUG /* TODO: move to debugfs */
__ATTR(baud_rate, 0644, (void *)show_baud_rate, (void *)store_baud_rate);
#else
__ATTR(baud_rate, 0444, (void *)show_baud_rate, NULL);
#endif
static struct kobj_attribute uart_flow_cntrl =
__ATTR(flow_cntrl, 0444, (void *)show_flow_cntrl, NULL);
......
drivers/s390/char/tape_class.h
View file @ 21a2cb56
......@@ -14,7 +14,6 @@
#include <linux/module.h>
#include <linux/fs.h>
#include <linux/major.h>
#include <linux/kobj_map.h>
#include <linux/cdev.h>
#include <linux/device.h>
......
fs/char_dev.c
View file @ 21a2cb56
......@@ -272,7 +272,7 @@ int __register_chrdev(unsigned int major, unsigned int baseminor,
cd = __register_chrdev_region(major, baseminor, count, name);
if (IS_ERR(cd))
return PTR_ERR(cd);
cdev = cdev_alloc();
if (!cdev)
goto out2;
......@@ -280,7 +280,7 @@ int __register_chrdev(unsigned int major, unsigned int baseminor,
cdev->owner = fops->owner;
cdev->ops = fops;
kobject_set_name(&cdev->kobj, "%s", name);
err = cdev_add(cdev, MKDEV(cd->major, baseminor), count);
if (err)
goto out;
......@@ -405,7 +405,7 @@ static int chrdev_open(struct inode *inode, struct file *filp)
goto out_cdev_put;
if (filp->f_op->open) {
ret = filp->f_op->open(inode,filp);
ret = filp->f_op->open(inode, filp);
if (ret)
goto out_cdev_put;
}
......
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