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ps3-vuart: don't use PREPARE_WORK 

PREPARE_[DELAYED_]WORK() are being phased out.  They have few users
and a nasty surprise in terms of reentrancy guarantee as workqueue
considers work items to be different if they don't have the same work
function.

ps3_vuart wasn't overriding the work item with multiple work functions
but was using NULL for INIT_WORK() and then single PREPARE_WORK() to
set the work function.  We can simply invoke INIT_WORK() with the work
function and remove the PREPARE_WORK() usage.

It would probably be best to route this with other related updates
through the workqueue tree.

Geoff: Tested on ps3 (DECR-1400).

Signed-off-by: Tejun Heo <tj@kernel.org>
Acked-by: Geoff Levand <geoff@infradead.org>
Cc: linuxppc-dev@lists.ozlabs.org
Cc: cbe-oss-dev@lists.ozlabs.org
This commit is contained in:
Tejun Heo 2014-03-07 10:24:48 -05:00
parent d82fead463
commit 4a8bb7f548
1 changed files with 1 additions and 3 deletions
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4
drivers/ps3/ps3-vuart.c
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@ -699,8 +699,6 @@ int ps3_vuart_read_async(struct ps3_system_bus_device *dev, unsigned int bytes)
BUG_ON(!bytes); BUG_ON(!bytes);
PREPARE_WORK(&priv->rx_list.work.work, ps3_vuart_work);
spin_lock_irqsave(&priv->rx_list.lock, flags); spin_lock_irqsave(&priv->rx_list.lock, flags);
if (priv->rx_list.bytes_held >= bytes) { if (priv->rx_list.bytes_held >= bytes) {
dev_dbg(&dev->core, "%s:%d: schedule_work %xh bytes\n", dev_dbg(&dev->core, "%s:%d: schedule_work %xh bytes\n",
@ -1052,7 +1050,7 @@ static int ps3_vuart_probe(struct ps3_system_bus_device *dev)
INIT_LIST_HEAD(&priv->rx_list.head); INIT_LIST_HEAD(&priv->rx_list.head);
spin_lock_init(&priv->rx_list.lock); spin_lock_init(&priv->rx_list.lock);
INIT_WORK(&priv->rx_list.work.work, NULL); INIT_WORK(&priv->rx_list.work.work, ps3_vuart_work);
priv->rx_list.work.trigger = 0; priv->rx_list.work.trigger = 0;
priv->rx_list.work.dev = dev; priv->rx_list.work.dev = dev;