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-rw-r--r--drivers/w1/Kconfig2
-rw-r--r--drivers/w1/slaves/w1_ds2408.c2
-rw-r--r--drivers/w1/w1.c2
-rw-r--r--drivers/w1/w1_io.c22
4 files changed, 20 insertions, 8 deletions
diff --git a/drivers/w1/Kconfig b/drivers/w1/Kconfig
index fd2c7bd9dfbe..6743bde038cc 100644
--- a/drivers/w1/Kconfig
+++ b/drivers/w1/Kconfig
@@ -16,7 +16,7 @@ config W1_CON
depends on CONNECTOR
bool "Userspace communication over connector"
default y
- --- help ---
+ ---help---
This allows to communicate with userspace using connector. For more
information see <file:Documentation/connector/connector.txt>.
There are three types of messages between w1 core and userspace:
diff --git a/drivers/w1/slaves/w1_ds2408.c b/drivers/w1/slaves/w1_ds2408.c
index 7c8cdb8aed26..8e813eed0f0a 100644
--- a/drivers/w1/slaves/w1_ds2408.c
+++ b/drivers/w1/slaves/w1_ds2408.c
@@ -332,7 +332,6 @@ static struct bin_attribute w1_f29_sysfs_bin_files[NB_SYSFS_BIN_FILES] = {
},
.size = 1,
.read = w1_f29_read_cond_search_mask,
- .write = 0,
},
{
.attr = {
@@ -341,7 +340,6 @@ static struct bin_attribute w1_f29_sysfs_bin_files[NB_SYSFS_BIN_FILES] = {
},
.size = 1,
.read = w1_f29_read_cond_search_polarity,
- .write = 0,
},
{
.attr = {
diff --git a/drivers/w1/w1.c b/drivers/w1/w1.c
index 9761950697b4..2f2e894ea0c8 100644
--- a/drivers/w1/w1.c
+++ b/drivers/w1/w1.c
@@ -1027,7 +1027,7 @@ static int __init w1_init(void)
retval = driver_register(&w1_slave_driver);
if (retval) {
printk(KERN_ERR
- "Failed to register master driver. err=%d.\n",
+ "Failed to register slave driver. err=%d.\n",
retval);
goto err_out_master_unregister;
}
diff --git a/drivers/w1/w1_io.c b/drivers/w1/w1_io.c
index 3135b2c63998..e10acc237733 100644
--- a/drivers/w1/w1_io.c
+++ b/drivers/w1/w1_io.c
@@ -31,6 +31,9 @@
static int w1_delay_parm = 1;
module_param_named(delay_coef, w1_delay_parm, int, 0);
+static int w1_disable_irqs = 0;
+module_param_named(disable_irqs, w1_disable_irqs, int, 0);
+
static u8 w1_crc8_table[] = {
0, 94, 188, 226, 97, 63, 221, 131, 194, 156, 126, 32, 163, 253, 31, 65,
157, 195, 33, 127, 252, 162, 64, 30, 95, 1, 227, 189, 62, 96, 130, 220,
@@ -79,6 +82,10 @@ static u8 w1_touch_bit(struct w1_master *dev, int bit)
*/
static void w1_write_bit(struct w1_master *dev, int bit)
{
+ unsigned long flags = 0;
+
+ if(w1_disable_irqs) local_irq_save(flags);
+
if (bit) {
dev->bus_master->write_bit(dev->bus_master->data, 0);
w1_delay(6);
@@ -90,6 +97,8 @@ static void w1_write_bit(struct w1_master *dev, int bit)
dev->bus_master->write_bit(dev->bus_master->data, 1);
w1_delay(10);
}
+
+ if(w1_disable_irqs) local_irq_restore(flags);
}
/**
@@ -158,7 +167,7 @@ EXPORT_SYMBOL_GPL(w1_write_8);
static u8 w1_read_bit(struct w1_master *dev)
{
int result;
- unsigned long flags;
+ unsigned long flags = 0;
/* sample timing is critical here */
local_irq_save(flags);
@@ -318,6 +327,9 @@ EXPORT_SYMBOL_GPL(w1_read_block);
int w1_reset_bus(struct w1_master *dev)
{
int result;
+ unsigned long flags = 0;
+
+ if(w1_disable_irqs) local_irq_save(flags);
if (dev->bus_master->reset_bus)
result = dev->bus_master->reset_bus(dev->bus_master->data) & 0x1;
@@ -330,19 +342,21 @@ int w1_reset_bus(struct w1_master *dev)
* cpu for such a short amount of time AND get it back in
* the maximum amount of time.
*/
- w1_delay(480);
+ w1_delay(500);
dev->bus_master->write_bit(dev->bus_master->data, 1);
w1_delay(70);
result = dev->bus_master->read_bit(dev->bus_master->data) & 0x1;
- /* minmum 70 (above) + 410 = 480 us
+ /* minmum 70 (above) + 430 = 500 us
* There aren't any timing requirements between a reset and
* the following transactions. Sleeping is safe here.
*/
- /* w1_delay(410); min required time */
+ /* w1_delay(430); min required time */
msleep(1);
}
+ if(w1_disable_irqs) local_irq_restore(flags);
+
return result;
}
EXPORT_SYMBOL_GPL(w1_reset_bus);
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