evie/android_kernel_oneplus_msm8998
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

firmware_class: make firmware caching configurable

Browse source 
Because firmware caching generates uevent messages that are sent over a
netlink socket, it can prevent suspend on many platforms. It's also not
always useful, so make it a configurable option.

bug 32180327

Change-Id: I1250512b27edb56caa78d536e5ccf1fb669476ad
Signed-off-by: Tim Murray <timmurray@google.com>
Git-repo: https://source.codeaurora.org/quic/la/kernel/msm-4.4
Git-commit: e3198d51be98ec5606e2a2c5112a8a974d354fbc
Signed-off-by: Chintan Pandya <cpandya@codeaurora.org>
Signed-off-by: Srinivasarao P <spathi@codeaurora.org>
This commit is contained in:
Tim Murray 2016-10-20 13:53:58 -07:00 • committed by Gerrit - the friendly Code Review server
parent 385635a167
commit 8be65bee66
2 changed files with 9 additions and 4 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

5
drivers/base/Kconfig
View file

@ -165,6 +165,11 @@ config FW_LOADER_USER_HELPER_FALLBACK
If you are unsure about this, say N here.
config FW_CACHE
bool "Enable firmware caching during suspend"
depends on PM_SLEEP
default n
config WANT_DEV_COREDUMP
bool
help

8
drivers/base/firmware_class.c
View file

@ -1148,7 +1148,7 @@ static int fw_load_from_user_helper(struct firmware *firmware,
return _request_firmware_load(fw_priv, desc->opt_flags, timeout);
}
#ifdef CONFIG_PM_SLEEP
#ifdef CONFIG_FW_CACHE
/* kill pending requests without uevent to avoid blocking suspend */
static void kill_requests_without_uevent(void)
{
@ -1626,7 +1626,7 @@ request_firmware_nowait_into_buf(
}
EXPORT_SYMBOL_GPL(request_firmware_nowait_into_buf);
#ifdef CONFIG_PM_SLEEP
#ifdef CONFIG_FW_CACHE
static ASYNC_DOMAIN_EXCLUSIVE(fw_cache_domain);
/**
@ -1972,7 +1972,7 @@ static void __init fw_cache_init(void)
INIT_LIST_HEAD(&fw_cache.head);
fw_cache.state = FW_LOADER_NO_CACHE;
#ifdef CONFIG_PM_SLEEP
#ifdef CONFIG_FW_CACHE
spin_lock_init(&fw_cache.name_lock);
INIT_LIST_HEAD(&fw_cache.fw_names);
@ -1999,7 +1999,7 @@ static int __init firmware_class_init(void)
static void __exit firmware_class_exit(void)
{
#ifdef CONFIG_PM_SLEEP
#ifdef CONFIG_FW_CACHE
unregister_syscore_ops(&fw_syscore_ops);
unregister_pm_notifier(&fw_cache.pm_notify);
#endif