On Fri, 22 Dec 2006 15:16:55 +0100
Ard -kwaak- van Breemen <[email protected]> wrote:
> On Fri, Dec 22, 2006 at 03:00:59PM +0100, Ard -kwaak- van Breemen wrote:
> > 262 if (!irqs_disabled()) printk(__FILE__ "%s(): blaat: interrupts were enabled early@%d\n",__FUNCTION__,__LINE__);
> > 263
> > 264 ide_init_hwif_ports(&hw, ide_default_io_base(index), 0, &hwif->irq);
> ------------------------------------------^^^^^^^^^^^^^^^^^^^^^^^^^^^
> which does a if (pci_find_device(PCI_ANY_ID, PCI_ANY_ID,
> in include/asm-i386/ide.h
>
> which should be really the part that does the irq enabling.
doh, I missed down_read():
--- a/lib/rwsem-spinlock.c~down_write-preserve-local-irqs
+++ a/lib/rwsem-spinlock.c
@@ -129,13 +129,14 @@ void fastcall __sched __down_read(struct
{
struct rwsem_waiter waiter;
struct task_struct *tsk;
+ unsigned long flags;
- spin_lock_irq(&sem->wait_lock);
+ spin_lock_irqsave(&sem->wait_lock, flags);
if (sem->activity >= 0 && list_empty(&sem->wait_list)) {
/* granted */
sem->activity++;
- spin_unlock_irq(&sem->wait_lock);
+ spin_unlock_irqrestore(&sem->wait_lock, flags);
goto out;
}
@@ -150,7 +151,7 @@ void fastcall __sched __down_read(struct
list_add_tail(&waiter.list, &sem->wait_list);
/* we don't need to touch the semaphore struct anymore */
- spin_unlock_irq(&sem->wait_lock);
+ spin_unlock_irqrestore(&sem->wait_lock, flags);
/* wait to be given the lock */
for (;;) {
@@ -195,13 +196,14 @@ void fastcall __sched __down_write_neste
{
struct rwsem_waiter waiter;
struct task_struct *tsk;
+ unsigned long flags;
- spin_lock_irq(&sem->wait_lock);
+ spin_lock_irqsave(&sem->wait_lock, flags);
if (sem->activity == 0 && list_empty(&sem->wait_list)) {
/* granted */
sem->activity = -1;
- spin_unlock_irq(&sem->wait_lock);
+ spin_unlock_irqrestore(&sem->wait_lock, flags);
goto out;
}
@@ -216,7 +218,7 @@ void fastcall __sched __down_write_neste
list_add_tail(&waiter.list, &sem->wait_list);
/* we don't need to touch the semaphore struct anymore */
- spin_unlock_irq(&sem->wait_lock);
+ spin_unlock_irqrestore(&sem->wait_lock, flags);
/* wait to be given the lock */
for (;;) {
_
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
[Index of Archives]
[Kernel Newbies]
[Netfilter]
[Bugtraq]
[Photo]
[Stuff]
[Gimp]
[Yosemite News]
[MIPS Linux]
[ARM Linux]
[Linux Security]
[Linux RAID]
[Video 4 Linux]
[Linux for the blind]
[Linux Resources]
