sh: pci: Use a generic raw spinlock for PCI config access locking.
This copies the pci_config_lock idea from x86 over, allowing us to kill
off a couple of existing private locks. At the same time, these need to
be converted to raw spinlocks for -rt kernels, so we make that change at
the same time. This should make it easier for future parts to get the
locking right instead of inevitable ending up with lock type mismatches.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
diff --git a/arch/sh/drivers/pci/ops-sh7786.c b/arch/sh/drivers/pci/ops-sh7786.c
index 01cb70f..1284210 100644
--- a/arch/sh/drivers/pci/ops-sh7786.c
+++ b/arch/sh/drivers/pci/ops-sh7786.c
@@ -19,8 +19,6 @@
PCI_ACCESS_WRITE,
};
-static DEFINE_SPINLOCK(sh7786_pcie_lock);
-
static int sh7786_pcie_config_access(unsigned char access_type,
struct pci_bus *bus, unsigned int devfn, int where, u32 *data)
{
@@ -103,7 +101,7 @@
else if ((size == 4) && (where & 3))
return PCIBIOS_BAD_REGISTER_NUMBER;
- spin_lock_irqsave(&sh7786_pcie_lock, flags);
+ raw_spin_lock_irqsave(&pci_config_lock, flags);
ret = sh7786_pcie_config_access(PCI_ACCESS_READ, bus,
devfn, where, &data);
if (ret != PCIBIOS_SUCCESSFUL) {
@@ -123,7 +121,7 @@
devfn, where, size, (unsigned long)*val);
out:
- spin_unlock_irqrestore(&sh7786_pcie_lock, flags);
+ raw_spin_unlock_irqrestore(&pci_config_lock, flags);
return ret;
}
@@ -139,7 +137,7 @@
else if ((size == 4) && (where & 3))
return PCIBIOS_BAD_REGISTER_NUMBER;
- spin_lock_irqsave(&sh7786_pcie_lock, flags);
+ raw_spin_lock_irqsave(&pci_config_lock, flags);
ret = sh7786_pcie_config_access(PCI_ACCESS_READ, bus,
devfn, where, &data);
if (ret != PCIBIOS_SUCCESSFUL)
@@ -163,7 +161,7 @@
ret = sh7786_pcie_config_access(PCI_ACCESS_WRITE, bus,
devfn, where, &data);
out:
- spin_unlock_irqrestore(&sh7786_pcie_lock, flags);
+ raw_spin_unlock_irqrestore(&pci_config_lock, flags);
return ret;
}