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authorRandy Dunlap <rdunlap@infradead.org>2022-02-14 23:23:11 +0100
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2022-02-25 12:14:42 +0100
commit36744c117ab4e3d7e114c10d66882c418ba6ea8a (patch)
treee105765bb5d54b5dfe45018f0f11050fb09253aa /drivers
parentdebugfs: Document that debugfs_create functions need not be error checked (diff)
downloadlinux-36744c117ab4e3d7e114c10d66882c418ba6ea8a.tar.xz
linux-36744c117ab4e3d7e114c10d66882c418ba6ea8a.zip
firmware_loader: EXTRA_FIRMWARE does not support compressed files
Document in the firmware loader Kconfig help text that firmware image file compression is not supported for builtin EXTRA_FIRMWARE files so that someone does not waste time trying that. Cc: Luis Chamberlain <mcgrof@kernel.org> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: "Rafael J. Wysocki" <rafael@kernel.org> Acked-by: Luis Chamberlain <mcgrof@kernel.org> Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Link: https://lore.kernel.org/r/20220214222311.9758-1-rdunlap@infradead.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/base/firmware_loader/Kconfig5
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/base/firmware_loader/Kconfig b/drivers/base/firmware_loader/Kconfig
index 5b24f3959255..38f3b66bf52b 100644
--- a/drivers/base/firmware_loader/Kconfig
+++ b/drivers/base/firmware_loader/Kconfig
@@ -60,6 +60,8 @@ config EXTRA_FIRMWARE
image since it combines both GPL and non-GPL work. You should
consult a lawyer of your own before distributing such an image.
+ NOTE: Compressed files are not supported in EXTRA_FIRMWARE.
+
config EXTRA_FIRMWARE_DIR
string "Firmware blobs root directory"
depends on EXTRA_FIRMWARE != ""
@@ -169,6 +171,9 @@ config FW_LOADER_COMPRESS
be compressed with either none or crc32 integrity check type (pass
"-C crc32" option to xz command).
+ Compressed firmware support does not apply to firmware images
+ that are built into the kernel image (CONFIG_EXTRA_FIRMWARE).
+
config FW_CACHE
bool "Enable firmware caching during suspend"
depends on PM_SLEEP