Takashi Iwai 82fd7a8142 firmware: Add support for loading compressed files ... This patch adds the support for loading compressed firmware files. The primary motivation is to reduce the storage size; e.g. currently the files in /lib/firmware on my machine counts up to 419MB, while they can be reduced to 130MB by file compression. The patch introduces a new kconfig option CONFIG_FW_LOADER_COMPRESS. Even with this option set, the firmware loader still tries to load the original firmware file as-is at first, but then falls back to the file with ".xz" extension when it's not found, and the decompressed file content is returned to the caller of request_firmware(). So, no change is needed for the rest. Currently only XZ format is supported. A caveat is that the kernel XZ helper code supports only CRC32 (or none) integrity check type, so you'll have to compress the files via xz -C crc32 option. Since we can't determine the expanded size immediately from an XZ file, the patch re-uses the paged buffer that was used for the user-mode fallback; it puts the decompressed content page, which are vmapped at the end. The paged buffer code is conditionally built with a new Kconfig that is selected automatically. Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2019-06-18 09:11:22 +02:00
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firmware_loader	firmware: Add support for loading compressed files	2019-06-18 09:11:22 +02:00
power	More power management updates for 5.2-rc1	2019-05-15 08:46:44 -07:00
regmap
test
arch_topology.c
attribute_container.c
base.h
bus.c
cacheinfo.c
class.c
component.c
container.c
core.c
cpu.c	Merge branch 'x86-mds-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2019-05-14 07:57:29 -07:00
dd.c
devcon.c
devcoredump.c
devres.c
devtmpfs.c
driver.c
firmware.c
hypervisor.c
init.c
isa.c
Kconfig
Makefile
map.c
memory.c	mm/memory_hotplug: make unregister_memory_section() never fail	2019-05-14 09:47:49 -07:00
module.c
node.c
pinctrl.c
platform-msi.c
platform.c
property.c
soc.c
swnode.c
syscore.c
topology.c
transport_class.c