Merge tag 'driver-core-7.3-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/driver-core/driver-coregrafted

Pull driver core fixes from Danilo Krummrich:

 - Fix kernfs listxattr() not returning security xattr names (e.g.
   SELinux labels) when the kernfs node has no allocated kernfs_iattrs

 - Fix silent truncation of IRQ vector indices in the Rust PCI
   abstractions

 - Don't select OF from DRIVER_PE_KUNIT_TEST; skip the test when OF is
   disabled instead of silently enabling extra kernel functionality

 - Russ Weight is retiring from kernel development; update the Firmware
   Loader sysfs contact to the driver-core mailing list, add a CREDITS
   entry for Firmware Upload, and update MAINTAINERS accordingly

* tag 'driver-core-7.3-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/driver-core/driver-core:
  MAINTAINERS: Remove Russ Weight from Firmware Loader
  CREDITS: Add CREDITS entry for Firmware Upload
  firmware_loader: Change contact for sysfs nodes
  rust: pci: reject IRQ vector indices that do not fit in u32
  kernfs: preserve security xattrs without allocating iattrs
  drivers: base: test: DRIVER_PE_KUNIT_TEST should not select OF

1 files changed, 67 insertions, 0 deletions

diff --git a/arch/arm/lib/delay-loop.S b/arch/arm/lib/delay-loop.S
new file mode 100644
index 000000000..33b08ca1c
--- /dev/null
+++ b/arch/arm/lib/delay-loop.S
@@ -0,0 +1,67 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ *  linux/arch/arm/lib/delay.S
+ *
+ *  Copyright (C) 1995, 1996 Russell King
+ */
+#include <linux/linkage.h>
+#include <linux/cfi_types.h>
+#include <asm/assembler.h>
+#include <asm/delay.h>
+
+#ifdef CONFIG_ARCH_RPC
+		.arch	armv4
+#endif
+
+		.text
+
+.LC0:		.word	loops_per_jiffy
+.LC1:		.word	UDELAY_MULT
+
+/*
+ * loops = r0 * HZ * loops_per_jiffy / 1000000
+ *
+ * r0  <= 2000
+ * HZ  <= 1000
+ */
+
+SYM_TYPED_FUNC_START(__loop_udelay)
+		ldr	r2, .LC1
+		mul	r0, r2, r0		@ r0 = delay_us * UDELAY_MULT
+		b	__loop_const_udelay
+SYM_FUNC_END(__loop_udelay)
+
+SYM_TYPED_FUNC_START(__loop_const_udelay)	@ 0 <= r0 <= 0xfffffaf0
+		ldr	r2, .LC0
+		ldr	r2, [r2]
+		umull	r1, r0, r2, r0		@ r0-r1 = r0 * loops_per_jiffy
+		adds	r1, r1, #0xffffffff	@ rounding up ...
+		adcs	r0, r0, r0		@ and right shift by 31
+		reteq	lr
+		b	__loop_delay
+SYM_FUNC_END(__loop_const_udelay)
+
+		.align 3
+
+@ Delay routine
+SYM_TYPED_FUNC_START(__loop_delay)
+		subs	r0, r0, #1
+#if 0
+		retls	lr
+		subs	r0, r0, #1
+		retls	lr
+		subs	r0, r0, #1
+		retls	lr
+		subs	r0, r0, #1
+		retls	lr
+		subs	r0, r0, #1
+		retls	lr
+		subs	r0, r0, #1
+		retls	lr
+		subs	r0, r0, #1
+		retls	lr
+		subs	r0, r0, #1
+#endif
+		bhi	__loop_delay
+		ret	lr
+SYM_FUNC_END(__loop_delay)