Merge branch 'for-linus' of git://ftp.arm.linux.org.uk/~rmk/linux-arm

Pull ARM updates from Russell King:
 "Another mixture of changes this time around:

   - Split XIP linker file from main linker file to make it more
     maintainable, and various XIP fixes, and clean up a resulting
     macro.

   - Decompressor cleanups from Masahiro Yamada

   - Avoid printing an error for a missing L2 cache

   - Remove some duplicated symbols in System.map, and move
     vectors/stubs back into kernel VMA

   - Various low priority fixes from Arnd

   - Updates to allow bus match functions to return negative errno
     values, touching some drivers and the driver core.  Greg has acked
     these changes.

   - Virtualisation platform udpates form Jean-Philippe Brucker.

   - Security enhancements from Kees Cook

   - Rework some Kconfig dependencies and move PSCI idle management code
     out of arch/arm into drivers/firmware/psci.c

   - ARM DMA mapping updates, touching media, acked by Mauro.

   - Fix places in ARM code which should be using virt_to_idmap() so
     that Keystone2 can work.

   - Fix Marvell Tauros2 to work again with non-DT boots.

   - Provide a delay timer for ARM Orion platforms"

* 'for-linus' of git://ftp.arm.linux.org.uk/~rmk/linux-arm: (45 commits)
  ARM: 8546/1: dma-mapping: refactor to fix coherent+cma+gfp=0
  ARM: 8547/1: dma-mapping: store buffer information
  ARM: 8543/1: decompressor: rename suffix_y to compress-y
  ARM: 8542/1: decompressor: merge piggy.*.S and simplify Makefile
  ARM: 8541/1: decompressor: drop redundant FORCE in Makefile
  ARM: 8540/1: decompressor: use clean-files instead of extra-y to clean files
  ARM: 8539/1: decompressor: drop more unneeded assignments to "targets"
  ARM: 8538/1: decompressor: drop unneeded assignments to "targets"
  ARM: 8532/1: uncompress: mark putc as inline
  ARM: 8531/1: turn init_new_context into an inline function
  ARM: 8530/1: remove VIRT_TO_BUS
  ARM: 8537/1: drop unused DEBUG_RODATA from XIP_KERNEL
  ARM: 8536/1: mm: hide __start_rodata_section_aligned for non-debug builds
  ARM: 8535/1: mm: DEBUG_RODATA makes no sense with XIP_KERNEL
  ARM: 8534/1: virt: fix hyp-stub build for pre-ARMv7 CPUs
  ARM: make the physical-relative calculation more obvious
  ARM: 8512/1: proc-v7.S: Adjust stack address when XIP_KERNEL
  ARM: 8411/1: Add default SPARSEMEM settings
  ARM: 8503/1: clk_register_clkdev: remove format string interface
  ARM: 8529/1: remove 'i' and 'zi' targets
  ...

drivers/base/dd.c

@@ -560,6 +560,7 @@ static int __device_attach_driver(struct device_driver *drv, void *_data)
 	struct device_attach_data *data = _data;
 	struct device *dev = data->dev;
 	bool async_allowed;
+	int ret;
 
 	/*
 	 * Check if device has already been claimed. This may
@@ -570,8 +571,17 @@ static int __device_attach_driver(struct device_driver *drv, void *_data)
 	if (dev->driver)
 		return -EBUSY;
 
-	if (!driver_match_device(drv, dev))
+	ret = driver_match_device(drv, dev);
+	if (ret == 0) {
+		/* no match */
 		return 0;
+	} else if (ret == -EPROBE_DEFER) {
+		dev_dbg(dev, "Device match requests probe deferral\n");
+		driver_deferred_probe_add(dev);
+	} else if (ret < 0) {
+		dev_dbg(dev, "Bus failed to match device: %d", ret);
+		return ret;
+	} /* ret > 0 means positive match */
 
 	async_allowed = driver_allows_async_probing(drv);
 
@@ -691,6 +701,7 @@ void device_initial_probe(struct device *dev)
 static int __driver_attach(struct device *dev, void *data)
 {
 	struct device_driver *drv = data;
+	int ret;
 
 	/*
 	 * Lock device and try to bind to it. We drop the error
@@ -702,8 +713,17 @@ static int __driver_attach(struct device *dev, void *data)
 	 * is an error.
 	 */
 
-	if (!driver_match_device(drv, dev))
+	ret = driver_match_device(drv, dev);
+	if (ret == 0) {
+		/* no match */
 		return 0;
+	} else if (ret == -EPROBE_DEFER) {
+		dev_dbg(dev, "Device match requests probe deferral\n");
+		driver_deferred_probe_add(dev);
+	} else if (ret < 0) {
+		dev_dbg(dev, "Bus failed to match device: %d", ret);
+		return ret;
+	} /* ret > 0 means positive match */
 
 	if (dev->parent)	/* Needed for USB */
 		device_lock(dev->parent);