The systemd commit below can delay firmware loading by multiple
minutes if CONFIG_FW_LOADER_USER_HELPER=y. Unfortunately no one
noticed that the systemd-udev change would break new kernels as well
as old kernels.
Since the kernel apparently can't count on reasonable userspace
support, turn this thing off by default.
commit a3bd8447be4ea2ce230eb8ae0e815c04d85fa15a
Author: Tom Gundersen <teg@xxxxxxx>
Date: Mon Mar 18 15:12:18 2013 +0100
udev: make firmware loading optional and disable by default
Distros that whish to support old kernels should set
--with-firmware-dirs="/usr/lib/firmware/updates:/usr/lib/firmware"
to retain the old behaviour.
---
drivers/base/Kconfig | 15 +++++++++++----
drivers/firmware/Kconfig | 1 -
2 files changed, 11 insertions(+), 5 deletions(-)
diff --git a/drivers/base/Kconfig b/drivers/base/Kconfig
index 5daa259..de3903e 100644
--- a/drivers/base/Kconfig
+++ b/drivers/base/Kconfig
@@ -146,13 +146,20 @@ config EXTRA_FIRMWARE_DIR
config FW_LOADER_USER_HELPER
bool "Fallback user-helper invocation for firmware loading"
depends on FW_LOADER
- default y
+ default n
help
This option enables / disables the invocation of user-helper
(e.g. udev) for loading firmware files as a fallback after the
- direct file loading in kernel fails. The user-mode helper is
- no longer required unless you have a special firmware file that
- resides in a non-standard path.
+ direct file loading in kernel fails.
+
+ Since March 2013, a default udev build does not understand
+ firmware loading requests. These udev versions will not
+ even indicate failure; instead they cause long timeouts.
+ This can dramatically slow down the boot process.
+
+ Say Y only if you have special firmware-loading requirements
+ and if you have a non-standard helper that will handle these
+ requests.
config DEBUG_DRIVER
bool "Driver Core verbose debug messages"
diff --git a/drivers/firmware/Kconfig b/drivers/firmware/Kconfig
index 07478728..9387630 100644
--- a/drivers/firmware/Kconfig
+++ b/drivers/firmware/Kconfig
@@ -64,7 +64,6 @@ config DELL_RBU
tristate "BIOS update support for DELL systems via sysfs"
depends on X86
select FW_LOADER
- select FW_LOADER_USER_HELPER
help
Say m if you want to have the option of updating the BIOS for your
DELL system. Note you need a Dell OpenManage or Dell Update package (DUP)
--
1.8.3.1
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