linux/drivers/of, branch v3.17

of/fdt: fix memory range check

2014-09-25T10:55:50Z

In cases where board has below memory DT node memory{ device_type = "memory"; reg = <0x80000000 0x80000000>; }; Check on the memory range in fdt.c will always fail because it is comparing MAX_PHYS_ADDR with base + size, in fact it should compare it with base + size - 1. This issue was originally noticed on Qualcomm IFC6410 board. Without this patch kernel shows up noticed unnecessary warnings [ 0.000000] Machine model: Qualcomm APQ8064/IFC6410 [ 0.000000] Ignoring memory range 0xffffffff - 0x100000000 [ 0.000000] cma: Reserved 64 MiB at ab800000 as a result the size get reduced to 0x7fffffff which looks wrong. This patch fixes the check involved in generating this warning and as a result it also fixes the wrong size calculation. Signed-off-by: Srinivas Kandagatla [grant.likely: adjust new size calculation also] Signed-off-by: Grant Likely

of: Fix memory block alignment in early_init_dt_add_memory_arch()

2014-09-08T14:57:26Z

If a memory block is not aligned to PAGE_SIZE, its base address must be rounded up, not down, and its size must be reduced. Signed-off-by: Geert Uytterhoeven Signed-off-by: Grant Likely

of: make sure of_alias is initialized before accessing it

2014-09-08T14:57:26Z

Simply swap of_alias and of_chosen initialization so that of_alias ends up read first. This must be done because it is accessed couple of lines below when trying to initialize the of_stdout using the alias based legacy method. [Fixes a752ee5 - tty: Update hypervisor tty drivers to use core stdout parsing code] Signed-off-by: Laurentiu Tudor [glikely: Don't move the 'if (!of_aliases)' test] Signed-off-by: Grant Likely

of: Disabling OF functions that use sysfs if CONFIG_SYSFS disabled

2014-09-08T14:57:25Z

This patch is to the fix the recent runtime bug in kernel reported by . The bug was exposed by commit b951f9dc, "Enabling OF selftest to run without machine's devicetree" and is exposed when CONFIG_OF_SELFTEST is enabled and CONFIG_SYSFS is disabled. Mail Subject: [OF test] BUG: unable to handle kernel NULL pointer dereference at 00000038 Tested on x86 and arm architecture Signed-off-by: Gaurav Minocha Signed-off-by: Grant Likely

of: correct of_console_check()'s return value

2014-09-08T14:57:24Z

The comments above of_console_check() say that it will return TRUE if it registers a preferred console, but add_preferred_console() uses a 0-equals-success convention, so this leaves of_console_check() with an inconsistent policy for its return values. Fortunately, nobody was actually checking the return value of of_console_check(), so this isn't significant at the moment. But let's match the comments, so we're doing what we say. Fixes: 3482f2c52b77 ('of: Create of_console_check() for selecting a console specified in /chosen') Signed-off-by: Brian Norris Signed-off-by: Grant Likely

of/irq: Fix lookup to use 'interrupts-extended' property first

2014-08-16T08:03:58Z

In case the Device Tree blob passed by the boot agent supplies both an 'interrupts-extended' and an 'interrupts' property in order to allow for older kernels to be usable, prefer the new-style 'interrupts-extended' property which conveys a lot more information. This allows us to have bootloaders willingly maintaining backwards compatibility with older kernels without entirely deprecating the 'interrupts' property. Update the bindings documentation to describe a situation where both the 'interrupts-extended' and the 'interrupts' property are present, and which one takes precedence over the other. Cc: stable@vger.kernel.org # 3.13+ Acked-by: Rob Herring Signed-off-by: Brian Norris Signed-off-by: Florian Fainelli Signed-off-by: Grant Likely

Enabling OF selftest to run without machine's devicetree

2014-08-16T08:03:56Z

If there is no devicetree present, this patch adds the selftest data as a live devicetree. It also removes the same after the testcase execution is complete. Tested with and without machine's devicetree. Signed-off-by: Gaurav Minocha Signed-off-by: Grant Likely

of: Allow mem_reserve of memory with a base address of zero

2014-08-16T08:02:52Z

__reserved_mem_reserve_reg() won't reserve memory if the base address is zero. This change removes the check for a base address of zero and allows it to be reserved. Allowing the first 4K of memory to be reserved will help solve a problem on some ARM systems where the the first 16K of memory is unused and becomes allocable memory. This will prevent this memory from being used for DMA by drivers like the USB OHCI driver which consider a physical address of zero to be illegal. Cc: stable@vger.kernel.org # 3.15+ Signed-off-by: Al Cooper Signed-off-by: Grant Likely

Merge tag 'devicetree-for-linus' of git://git.secretlab.ca/git/linux

2014-08-14T15:53:39Z

Pull device tree updates from Grant Likely: "The branch contains the following device tree changes the v3.17 merge window: Group changes to the device tree. In preparation for adding device tree overlay support, OF_DYNAMIC is reworked so that a set of device tree changes can be prepared and applied to the tree all at once. OF_RECONFIG notifiers see the most significant change here so that users always get a consistent view of the tree. Notifiers generation is moved from before a change to after it, and notifiers for a group of changes are emitted after the entire block of changes have been applied Automatic console selection from DT. Console drivers can now use of_console_check() to see if the device node is specified as a console device. If so then it gets added as a preferred console. UART devices get this support automatically when uart_add_one_port() is called. DT unit tests no longer depend on pre-loaded data in the device tree. Data is loaded dynamically at the start of unit tests, and then unloaded again when the tests have completed. Also contains a few bugfixes for reserved regions and early memory setup" * tag 'devicetree-for-linus' of git://git.secretlab.ca/git/linux: (21 commits) of: Fixing OF Selftest build error drivers: of: add automated assignment of reserved regions to client devices of: Use proper types for checking memory overflow of: typo fix in __of_prop_dup() Adding selftest testdata dynamically into live tree of: Add todo tasklist for Devicetree of: Transactional DT support. of: Reorder device tree changes and notifiers of: Move dynamic node fixups out of powerpc and into common code of: Make sure attached nodes don't carry along extra children of: Make devicetree sysfs update functions consistent. of: Create unlocked versions of node and property add/remove functions OF: Utility helper functions for dynamic nodes of: Move CONFIG_OF_DYNAMIC code into a separate file of: rename of_aliases_mutex to just of_mutex of/platform: Fix of_platform_device_destroy iteration of devices of: Migrate of_find_node_by_name() users to for_each_node_by_name() tty: Update hypervisor tty drivers to use core stdout parsing code. arm/versatile: Add the uart as the stdout device. of: Enable console on serial ports specified by /chosen/stdout-path ...

Merge branch 'devicetree/next-overlay' into devicetree/next

2014-08-11T13:06:23Z

Conflicts: drivers/of/testcase-data/testcases.dts