Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rmk/linux

Pull ARM updates from Russell King:

 - add dev_is_amba() function to allow conversions during the next cycle

 - improve PREEMPT_RT performance with VFP

 - KASAN fixes for vmap stack

* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rmk/linux:
  ARM: 9431/1: mm: Pair atomic_set_release() with _read_acquire()
  ARM: 9430/1: entry: Do a dummy read from VMAP shadow
  ARM: 9429/1: ioremap: Sync PGDs for VMALLOC shadow
  ARM: 9426/1: vfp: Move sending signals outside of vfp_state_hold()ed section.
  ARM: 9425/1: vfp: Use vfp_state_hold() in vfp_support_entry().
  ARM: 9424/1: vfp: Use vfp_state_hold() in vfp_sync_hwstate().
  ARM: 9423/1: vfp: Provide vfp_state_hold() for VFP locking.
  ARM: 9415/1: amba: Add dev_is_amba() function and export it for modules

1 files changed, 6 insertions, 0 deletions

diff --git a/drivers/amba/bus.c b/drivers/amba/bus.c
index 0230c43377c1..8ef259b4d037 100644
--- a/drivers/amba/bus.c
+++ b/drivers/amba/bus.c
@@ -449,6 +449,12 @@ const struct bus_type amba_bustype = {
 };
 EXPORT_SYMBOL_GPL(amba_bustype);
 
+bool dev_is_amba(const struct device *dev)
+{
+	return dev->bus == &amba_bustype;
+}
+EXPORT_SYMBOL_GPL(dev_is_amba);
+
 static int __init amba_init(void)
 {
 	return bus_register(&amba_bustype);