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driver core: Add CONFIG_FW_DEVLINK_SYNC_STATE_TIMEOUT 

Add a build time equivalent of fw_devlink.sync_state=timeout so that
board specific kernels could enable it and not have to deal with setting
or cluttering the kernel commandline.

Cc: Doug Anderson <dianders@chromium.org>
Signed-off-by: Saravana Kannan <saravanak@google.com>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Link: https://lore.kernel.org/r/20230317205134.964098-1-saravanak@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Saravana Kannan 2023-03-17 13:51:33 -07:00 committed by Greg Kroah-Hartman
parent 517d4927aa
commit 8ad266d133
2 changed files with 17 additions and 0 deletions
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12
drivers/base/Kconfig
View File

@ -230,4 +230,16 @@ config GENERIC_ARCH_NUMA
Enable support for generic NUMA implementation. Currently, RISC-V
and ARM64 use it.
config FW_DEVLINK_SYNC_STATE_TIMEOUT
bool "sync_state() behavior defaults to timeout instead of strict"
help
This is build time equivalent of adding kernel command line parameter
"fw_devlink.sync_state=timeout". Give up waiting on consumers and
call sync_state() on any devices that haven't yet received their
sync_state() calls after deferred_probe_timeout has expired or by
late_initcall() if !CONFIG_MODULES. You should almost always want to
select N here unless you have already successfully tested with the
command line option on every system/board your kernel is expected to
work on.
endmenu

5
drivers/base/core.c
View File

@ -1671,7 +1671,12 @@ early_param("fw_devlink.strict", fw_devlink_strict_setup);
#define FW_DEVLINK_SYNC_STATE_STRICT 0
#define FW_DEVLINK_SYNC_STATE_TIMEOUT 1
#ifndef CONFIG_FW_DEVLINK_SYNC_STATE_TIMEOUT
static int fw_devlink_sync_state;
#else
static int fw_devlink_sync_state = FW_DEVLINK_SYNC_STATE_TIMEOUT;
#endif
static int __init fw_devlink_sync_state_setup(char *arg)
{
if (!arg)