kernel/linux.git/arch/arm/include/asm/hardware, branch v6.19.11

arm: make sa1111_bus_type const

2025-10-22T05:54:54+00:00

Because driver core can properly handle constant struct bus_type, move the sa1111_bus_type to be a constant structure as well, placing it into read-only memory which can not be modified at runtime. Signed-off-by: Adrian Barnaś Reviewed-by: Greg Kroah-Hartman Link: https://patch.msgid.link/20250918134429.270814-1-abarnas@google.com Signed-off-by: Greg Kroah-Hartman

ARM: sa1100: make match function take a const pointer

2024-07-19T11:47:20+00:00

In commit d69d80484598 ("driver core: have match() callback in struct bus_type take a const *"), the match callback for busses was changed to take a const pointer to struct device_driver. Unfortunately I missed fixing up the sa1111 code, and was only noticed after-the-fact by the kernel test robot. Resolve this issue by properly changing the sa111_match() function. Cc: Russell King Fixes: d69d80484598 ("driver core: have match() callback in struct bus_type take a const *") Reported-by: kernel test robot Link: https://lore.kernel.org/r/20240712093916.2121096-2-gregkh@linuxfoundation.org Signed-off-by: Greg Kroah-Hartman

driver core: have match() callback in struct bus_type take a const *

2024-07-03T13:16:54+00:00

In the match() callback, the struct device_driver * should not be changed, so change the function callback to be a const *. This is one step of many towards making the driver core safe to have struct device_driver in read-only memory. Because the match() callback is in all busses, all busses are modified to handle this properly. This does entail switching some container_of() calls to container_of_const() to properly handle the constant *. For some busses, like PCI and USB and HV, the const * is cast away in the match callback as those busses do want to modify those structures at this point in time (they have a local lock in the driver structure.) That will have to be changed in the future if they wish to have their struct device * in read-only-memory. Cc: Rafael J. Wysocki Reviewed-by: Alex Elder Acked-by: Sumit Garg Link: https://lore.kernel.org/r/2024070136-wrongdoer-busily-01e8@gregkh Signed-off-by: Greg Kroah-Hartman

locomo: make locomo_bus_type constant and static

2024-01-04T13:38:57+00:00

Now that the driver core can properly handle constant struct bus_type, move the locomo_bus_type variable to be a constant structure as well, placing it into read-only memory which can not be modified at runtime. It's also never used outside of arch/arm/common/locomo.c so make it static and don't export it as no one is using it. Cc: Russell King Cc: Arnd Bergmann Cc: Uwe Kleine-König Cc: Randy Dunlap Cc: Acked-by: Uwe Kleine-König Reviewed-by: Arnd Bergmann Link: https://lore.kernel.org/r/2023121905-idiom-opossum-1ba3@gregkh Signed-off-by: Greg Kroah-Hartman

ARM: locomo: fix locomolcd_power declaration

2023-09-28T07:15:51+00:00

The locomolcd driver has one remaining missing-prototype warning: drivers/video/backlight/locomolcd.c:83:6: error: no previous prototype for 'locomolcd_power' [-Werror=missing-prototypes] There is in fact an unused prototype with a similar name in a global header, so move the actual one there and remove the old one. Link: https://lore.kernel.org/r/20230927194844.680771-1-arnd@kernel.org Signed-off-by: Arnd Bergmann

ARM: l2x0: Add explicit includes for init and types

2023-08-12T08:30:54+00:00

The cache-l2x0.h header uses u32 type and the __init and __iomem attributes, so it should have explicit includes for those. Signed-off-by: Rob Herring Link: https://lore.kernel.org/r/20230803-dt-header-cleanups-for-soc-v2-1-d8de2cc88bff@kernel.org Signed-off-by: Arnd Bergmann

ARM: footbridge: remove custom DMA address handling

2022-09-15T13:59:16+00:00

Footbridge is the last Arm platform that has its own __virt_to_bus()/__bus_to_virt()/phys_to_dma()/dma_to_phys() abstraction, but this is just a simple offset now. For PCI devices, the offset that is programmed into the PCI bridge must also be set in each device using dma_direct_set_offset(). As Arm does not have a pcibios_bus_add_device() helper yet, just use a bus notifier for this. For the ISA DMA, drivers now pass a non-translated physical address into set_dma_addr(), so they have to be converted back with the corresponding isa_bus_to_virt() function and then into the correct bus address with the offset using the isa_dma_dev. Tested-by: Marc Zyngier Signed-off-by: Arnd Bergmann

ARM: footbridge: remove addin mode

2022-09-09T15:14:16+00:00

This does not appear to have been used in many years, we can kill off some of the uglier code. Among other things, it avoids a randconfig issue when both modes are disabled: arch/arm/mach-footbridge/common.c:149:24: error: 'ebsa285_host_io_desc' defined but not used [-Werror=unused-variable] 149 | static struct map_desc ebsa285_host_io_desc[] __initdata = { | ^~~~~~~~~~~~~~~~~~~~ arch/arm/mach-footbridge/common.c:136:24: error: 'fb_common_io_desc' defined but not used [-Werror=unused-variable] 136 | static struct map_desc fb_common_io_desc[] __initdata = { | ^~~~~~~~~~~~~~~~~ The recently added phys_to_dma() functions are now trivial and could probably be removed again as a follow-up, if anyone knows how. Cc: Christoph Hellwig Tested-by: Marc Zyngier Signed-off-by: Arnd Bergmann

treewide: Replace GPLv2 boilerplate/reference with SPDX - gpl-2.0_56.RULE (part 1)

2022-06-10T12:51:35+00:00

Based on the normalized pattern: this file is licensed under the terms of the gnu general public license version 2 this program is licensed as is without any warranty of any kind whether express or implied extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference. Reviewed-by: Allison Randal Signed-off-by: Thomas Gleixner Signed-off-by: Greg Kroah-Hartman

ARM: pxa: remove unused mach/bitfield.h

2022-05-07T20:56:16+00:00

The sa1111.h header defines some constants using the bitfield macros, but those are only used on sa1100, not on pxa, and the users include the bitfield header through mach/hardware.h. Acked-by: Robert Jarzmik Signed-off-by: Arnd Bergmann