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Commit c36bdd11 authored by Tim Murray's avatar Tim Murray Committed by Isaac J. Manjarres
Browse files

firmware_class: make firmware caching configurable 



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: default avatarTim Murray <timmurray@google.com>
Git-repo: https://source.codeaurora.org/quic/la/kernel/msm-4.4


Git-commit: e3198d51be98ec5606e2a2c5112a8a974d354fbc
Signed-off-by: default avatarChintan Pandya <cpandya@codeaurora.org>
[isaacm@codeaurora.org: Resolved trivial merge conflicts]
Signed-off-by: default avatarIsaac J. Manjarres <isaacm@codeaurora.org>
parent e15f923a

drivers/base/Kconfig

+5 −0
Original line number Diff line number Diff line
@@ -164,6 +164,11 @@ 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

drivers/base/firmware_class.c

+3 −3
Original line number Diff line number Diff line
@@ -1449,7 +1449,7 @@ request_firmware_nowait( 
}

EXPORT_SYMBOL(request_firmware_nowait);



#ifdef CONFIG_PM_SLEEP

#ifdef CONFIG_FW_CACHE

static ASYNC_DOMAIN_EXCLUSIVE(fw_cache_domain);



/**
@@ -1799,7 +1799,7 @@ 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);
@@ -1842,7 +1842,7 @@ 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