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Diffstat (limited to 'drivers/platform/x86/p2sb.c')
-rw-r--r--drivers/platform/x86/p2sb.c29
1 files changed, 15 insertions, 14 deletions
diff --git a/drivers/platform/x86/p2sb.c b/drivers/platform/x86/p2sb.c
index 3d66e1d4eb..1ac30034f3 100644
--- a/drivers/platform/x86/p2sb.c
+++ b/drivers/platform/x86/p2sb.c
@@ -56,12 +56,9 @@ static int p2sb_get_devfn(unsigned int *devfn)
return 0;
}
-static bool p2sb_valid_resource(struct resource *res)
+static bool p2sb_valid_resource(const struct resource *res)
{
- if (res->flags)
- return true;
-
- return false;
+ return res->flags & ~IORESOURCE_UNSET;
}
/* Copy resource from the first BAR of the device in question */
@@ -220,16 +217,20 @@ EXPORT_SYMBOL_GPL(p2sb_bar);
static int __init p2sb_fs_init(void)
{
- p2sb_cache_resources();
- return 0;
+ return p2sb_cache_resources();
}
/*
- * pci_rescan_remove_lock to avoid access to unhidden P2SB devices can
- * not be locked in sysfs pci bus rescan path because of deadlock. To
- * avoid the deadlock, access to P2SB devices with the lock at an early
- * step in kernel initialization and cache required resources. This
- * should happen after subsys_initcall which initializes PCI subsystem
- * and before device_initcall which requires P2SB resources.
+ * pci_rescan_remove_lock() can not be locked in sysfs PCI bus rescan path
+ * because of deadlock. To avoid the deadlock, access P2SB devices with the lock
+ * at an early step in kernel initialization and cache required resources.
+ *
+ * We want to run as early as possible. If the P2SB was assigned a bad BAR,
+ * we'll need to wait on pcibios_assign_resources() to fix it. So, our list of
+ * initcall dependencies looks something like this:
+ *
+ * ...
+ * subsys_initcall (pci_subsys_init)
+ * fs_initcall (pcibios_assign_resources)
*/
-fs_initcall(p2sb_fs_init);
+fs_initcall_sync(p2sb_fs_init);