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firmware_class: make firmware caching configurable

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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
[vnkgutta@codeaurora.org: Resolved trivial merge conflicts]
Signed-off-by: Venkata Narendra Kumar Gutta <vnkgutta@codeaurora.org>
This commit is contained in:
Tim Murray 2016-10-20 13:53:58 -07:00 • committed by Venkata Narendra Kumar Gutta
parent bd110257ad
commit 53d9c1f90d
2 changed files with 8 additions and 3 deletions
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5
drivers/base/Kconfig
View file

@ -90,6 +90,11 @@ config PREVENT_FIRMWARE_BUILD
source "drivers/base/firmware_loader/Kconfig"
config FW_CACHE
bool "Enable firmware caching during suspend"
depends on PM_SLEEP
default n
config WANT_DEV_COREDUMP
bool
help

6
drivers/base/firmware_loader/main.c
View file

@ -50,7 +50,7 @@ struct firmware_cache {
struct list_head head;
int state;
#ifdef CONFIG_PM_SLEEP
#ifdef CONFIG_FW_CACHE
/*
* Names of firmware images which have been cached successfully
* will be added into the below list so that device uncache
@ -377,7 +377,7 @@ static void fw_set_page_data(struct fw_priv *fw_priv, struct firmware *fw)
(unsigned int)fw_priv->size);
}
#ifdef CONFIG_PM_SLEEP
#ifdef CONFIG_FW_CACHE
static void fw_name_devm_release(struct device *dev, void *res)
{
struct fw_name_devm *fwn = res;
@ -861,7 +861,7 @@ request_firmware_nowait(
}
EXPORT_SYMBOL(request_firmware_nowait);
#ifdef CONFIG_PM_SLEEP
#ifdef CONFIG_FW_CACHE
static ASYNC_DOMAIN_EXCLUSIVE(fw_cache_domain);
/**