diff options
| author | Jens Axboe <jaxboe@fusionio.com> | 2011-05-20 20:33:15 +0200 |
|---|---|---|
| committer | Jens Axboe <jaxboe@fusionio.com> | 2011-05-20 20:33:15 +0200 |
| commit | 698567f3fa790fea37509a54dea855302dd88331 (patch) | |
| tree | 7a1df976a0eb12cab03e82c18809a30d5482fee4 /drivers/i2c/busses/i2c-parport.c | |
| parent | d70d0711edd8076ec2ce0ed109106e2df950681b (diff) | |
| parent | 61c4f2c81c61f73549928dfd9f3e8f26aa36a8cf (diff) | |
Merge commit 'v2.6.39' into for-2.6.40/core
Since for-2.6.40/core was forked off the 2.6.39 devel tree, we've
had churn in the core area that makes it difficult to handle
patches for eg cfq or blk-throttle. Instead of requiring that they
be based in older versions with bugs that have been fixed later
in the rc cycle, merge in 2.6.39 final.
Also fixes up conflicts in the below files.
Conflicts:
drivers/block/paride/pcd.c
drivers/cdrom/viocd.c
drivers/ide/ide-cd.c
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
Diffstat (limited to 'drivers/i2c/busses/i2c-parport.c')
| -rw-r--r-- | drivers/i2c/busses/i2c-parport.c | 27 |
1 files changed, 14 insertions, 13 deletions
diff --git a/drivers/i2c/busses/i2c-parport.c b/drivers/i2c/busses/i2c-parport.c index 0eb1515541e7..2dbba163b102 100644 --- a/drivers/i2c/busses/i2c-parport.c +++ b/drivers/i2c/busses/i2c-parport.c @@ -1,7 +1,7 @@ /* ------------------------------------------------------------------------ * * i2c-parport.c I2C bus over parallel port * * ------------------------------------------------------------------------ * - Copyright (C) 2003-2010 Jean Delvare <khali@linux-fr.org> + Copyright (C) 2003-2011 Jean Delvare <khali@linux-fr.org> Based on older i2c-philips-par.c driver Copyright (C) 1995-2000 Simon G. Vogl @@ -33,6 +33,8 @@ #include <linux/i2c-algo-bit.h> #include <linux/i2c-smbus.h> #include <linux/slab.h> +#include <linux/list.h> +#include <linux/mutex.h> #include "i2c-parport.h" /* ----- Device list ------------------------------------------------------ */ @@ -43,10 +45,11 @@ struct i2c_par { struct i2c_algo_bit_data algo_data; struct i2c_smbus_alert_setup alert_data; struct i2c_client *ara; - struct i2c_par *next; + struct list_head node; }; -static struct i2c_par *adapter_list; +static LIST_HEAD(adapter_list); +static DEFINE_MUTEX(adapter_list_lock); /* ----- Low-level parallel port access ----------------------------------- */ @@ -228,8 +231,9 @@ static void i2c_parport_attach (struct parport *port) } /* Add the new adapter to the list */ - adapter->next = adapter_list; - adapter_list = adapter; + mutex_lock(&adapter_list_lock); + list_add_tail(&adapter->node, &adapter_list); + mutex_unlock(&adapter_list_lock); return; ERROR1: @@ -241,11 +245,11 @@ ERROR0: static void i2c_parport_detach (struct parport *port) { - struct i2c_par *adapter, *prev; + struct i2c_par *adapter, *_n; /* Walk the list */ - for (prev = NULL, adapter = adapter_list; adapter; - prev = adapter, adapter = adapter->next) { + mutex_lock(&adapter_list_lock); + list_for_each_entry_safe(adapter, _n, &adapter_list, node) { if (adapter->pdev->port == port) { if (adapter->ara) { parport_disable_irq(port); @@ -259,14 +263,11 @@ static void i2c_parport_detach (struct parport *port) parport_release(adapter->pdev); parport_unregister_device(adapter->pdev); - if (prev) - prev->next = adapter->next; - else - adapter_list = adapter->next; + list_del(&adapter->node); kfree(adapter); - return; } } + mutex_unlock(&adapter_list_lock); } static struct parport_driver i2c_parport_driver = { |