summaryrefslogtreecommitdiffstats
path: root/drivers/pci/access.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/pci/access.c')
-rw-r--r--drivers/pci/access.c41
1 files changed, 23 insertions, 18 deletions
diff --git a/drivers/pci/access.c b/drivers/pci/access.c
index 2f646fe1260f..531bc697d800 100644
--- a/drivers/pci/access.c
+++ b/drivers/pci/access.c
@@ -13,7 +13,7 @@
* configuration space.
*/
-static DEFINE_SPINLOCK(pci_lock);
+static DEFINE_RAW_SPINLOCK(pci_lock);
/*
* Wrappers for all PCI configuration access functions. They just check
@@ -33,10 +33,10 @@ int pci_bus_read_config_##size \
unsigned long flags; \
u32 data = 0; \
if (PCI_##size##_BAD) return PCIBIOS_BAD_REGISTER_NUMBER; \
- spin_lock_irqsave(&pci_lock, flags); \
+ raw_spin_lock_irqsave(&pci_lock, flags); \
res = bus->ops->read(bus, devfn, pos, len, &data); \
*value = (type)data; \
- spin_unlock_irqrestore(&pci_lock, flags); \
+ raw_spin_unlock_irqrestore(&pci_lock, flags); \
return res; \
}
@@ -47,9 +47,9 @@ int pci_bus_write_config_##size \
int res; \
unsigned long flags; \
if (PCI_##size##_BAD) return PCIBIOS_BAD_REGISTER_NUMBER; \
- spin_lock_irqsave(&pci_lock, flags); \
+ raw_spin_lock_irqsave(&pci_lock, flags); \
res = bus->ops->write(bus, devfn, pos, len, value); \
- spin_unlock_irqrestore(&pci_lock, flags); \
+ raw_spin_unlock_irqrestore(&pci_lock, flags); \
return res; \
}
@@ -79,10 +79,10 @@ struct pci_ops *pci_bus_set_ops(struct pci_bus *bus, struct pci_ops *ops)
struct pci_ops *old_ops;
unsigned long flags;
- spin_lock_irqsave(&pci_lock, flags);
+ raw_spin_lock_irqsave(&pci_lock, flags);
old_ops = bus->ops;
bus->ops = ops;
- spin_unlock_irqrestore(&pci_lock, flags);
+ raw_spin_unlock_irqrestore(&pci_lock, flags);
return old_ops;
}
EXPORT_SYMBOL(pci_bus_set_ops);
@@ -136,9 +136,9 @@ static noinline void pci_wait_ucfg(struct pci_dev *dev)
__add_wait_queue(&pci_ucfg_wait, &wait);
do {
set_current_state(TASK_UNINTERRUPTIBLE);
- spin_unlock_irq(&pci_lock);
+ raw_spin_unlock_irq(&pci_lock);
schedule();
- spin_lock_irq(&pci_lock);
+ raw_spin_lock_irq(&pci_lock);
} while (dev->block_ucfg_access);
__remove_wait_queue(&pci_ucfg_wait, &wait);
}
@@ -150,11 +150,11 @@ int pci_user_read_config_##size \
int ret = 0; \
u32 data = -1; \
if (PCI_##size##_BAD) return PCIBIOS_BAD_REGISTER_NUMBER; \
- spin_lock_irq(&pci_lock); \
+ raw_spin_lock_irq(&pci_lock); \
if (unlikely(dev->block_ucfg_access)) pci_wait_ucfg(dev); \
ret = dev->bus->ops->read(dev->bus, dev->devfn, \
pos, sizeof(type), &data); \
- spin_unlock_irq(&pci_lock); \
+ raw_spin_unlock_irq(&pci_lock); \
*val = (type)data; \
return ret; \
}
@@ -165,11 +165,11 @@ int pci_user_write_config_##size \
{ \
int ret = -EIO; \
if (PCI_##size##_BAD) return PCIBIOS_BAD_REGISTER_NUMBER; \
- spin_lock_irq(&pci_lock); \
+ raw_spin_lock_irq(&pci_lock); \
if (unlikely(dev->block_ucfg_access)) pci_wait_ucfg(dev); \
ret = dev->bus->ops->write(dev->bus, dev->devfn, \
pos, sizeof(type), val); \
- spin_unlock_irq(&pci_lock); \
+ raw_spin_unlock_irq(&pci_lock); \
return ret; \
}
@@ -220,8 +220,13 @@ static int pci_vpd_pci22_wait(struct pci_dev *dev)
return 0;
}
- if (time_after(jiffies, timeout))
+ if (time_after(jiffies, timeout)) {
+ dev_printk(KERN_DEBUG, &dev->dev,
+ "vpd r/w failed. This is likely a firmware "
+ "bug on this device. Contact the card "
+ "vendor for a firmware update.");
return -ETIMEDOUT;
+ }
if (fatal_signal_pending(current))
return -EINTR;
if (!cond_resched())
@@ -396,10 +401,10 @@ void pci_block_user_cfg_access(struct pci_dev *dev)
unsigned long flags;
int was_blocked;
- spin_lock_irqsave(&pci_lock, flags);
+ raw_spin_lock_irqsave(&pci_lock, flags);
was_blocked = dev->block_ucfg_access;
dev->block_ucfg_access = 1;
- spin_unlock_irqrestore(&pci_lock, flags);
+ raw_spin_unlock_irqrestore(&pci_lock, flags);
/* If we BUG() inside the pci_lock, we're guaranteed to hose
* the machine */
@@ -417,7 +422,7 @@ void pci_unblock_user_cfg_access(struct pci_dev *dev)
{
unsigned long flags;
- spin_lock_irqsave(&pci_lock, flags);
+ raw_spin_lock_irqsave(&pci_lock, flags);
/* This indicates a problem in the caller, but we don't need
* to kill them, unlike a double-block above. */
@@ -425,6 +430,6 @@ void pci_unblock_user_cfg_access(struct pci_dev *dev)
dev->block_ucfg_access = 0;
wake_up_all(&pci_ucfg_wait);
- spin_unlock_irqrestore(&pci_lock, flags);
+ raw_spin_unlock_irqrestore(&pci_lock, flags);
}
EXPORT_SYMBOL_GPL(pci_unblock_user_cfg_access);