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Subject[PATCH v2 05/11] firmware: use helpers for setting up a temporary cache timeout
Date
We only use the timeout for the firmware fallback mechanism
except for trying to set the timeout during the cache setup
for resume/suspend. For those cases, setting the timeout should
be a no-op, so just reflect this in code by adding helpers for it.

This change introduces no functional changes.

Signed-off-by: Luis R. Rodriguez <mcgrof@kernel.org>
---
drivers/base/firmware_loader.c | 49 ++++++++++++++++++++++++++----------------
1 file changed, 30 insertions(+), 19 deletions(-)

diff --git a/drivers/base/firmware_loader.c b/drivers/base/firmware_loader.c
index 59dba794ce1a..2d819875348d 100644
--- a/drivers/base/firmware_loader.c
+++ b/drivers/base/firmware_loader.c
@@ -191,13 +191,6 @@ static inline bool fw_is_builtin_firmware(const struct firmware *fw)
}
#endif

-static int loading_timeout = 60; /* In seconds */
-
-static inline long firmware_loading_timeout(void)
-{
- return loading_timeout > 0 ? loading_timeout * HZ : MAX_JIFFY_OFFSET;
-}
-
static void fw_state_init(struct fw_priv *fw_priv)
{
struct fw_state *fw_st = &fw_priv->fw_st;
@@ -282,6 +275,32 @@ static const struct firmware_fallback_config fw_fallback_config = {
.force_sysfs_fallback = IS_ENABLED(CONFIG_FW_LOADER_USER_HELPER_FALLBACK),
};

+static int old_timeout;
+static int loading_timeout = 60; /* In seconds */
+
+static inline long firmware_loading_timeout(void)
+{
+ return loading_timeout > 0 ? loading_timeout * HZ : MAX_JIFFY_OFFSET;
+}
+
+/*
+ * use small loading timeout for caching devices' firmware because all these
+ * firmware images have been loaded successfully at lease once, also system is
+ * ready for completing firmware loading now. The maximum size of firmware in
+ * current distributions is about 2M bytes, so 10 secs should be enough.
+ */
+static void fw_fallback_set_cache_timeout(void)
+{
+ old_timeout = loading_timeout;
+ loading_timeout = 10;
+}
+
+/* Restores the timeout to the value last configured during normal operation */
+static void fw_fallback_set_default_timeout(void)
+{
+ loading_timeout = old_timeout;
+}
+
static inline bool fw_sysfs_done(struct fw_priv *fw_priv)
{
return __fw_state_check(fw_priv, FW_STATUS_DONE);
@@ -1206,6 +1225,8 @@ static int fw_sysfs_fallback(struct firmware *fw, const char *name,
}

static inline void kill_pending_fw_fallback_reqs(bool only_kill_custom) { }
+static inline void fw_fallback_set_cache_timeout(void) { }
+static inline void fw_fallback_set_default_timeout(void) { }

static inline int register_sysfs_loader(void)
{
@@ -1752,7 +1773,6 @@ static void __device_uncache_fw_images(void)
static void device_cache_fw_images(void)
{
struct firmware_cache *fwc = &fw_cache;
- int old_timeout;
DEFINE_WAIT(wait);

pr_debug("%s\n", __func__);
@@ -1760,16 +1780,7 @@ static void device_cache_fw_images(void)
/* cancel uncache work */
cancel_delayed_work_sync(&fwc->work);

- /*
- * use small loading timeout for caching devices' firmware
- * because all these firmware images have been loaded
- * successfully at lease once, also system is ready for
- * completing firmware loading now. The maximum size of
- * firmware in current distributions is about 2M bytes,
- * so 10 secs should be enough.
- */
- old_timeout = loading_timeout;
- loading_timeout = 10;
+ fw_fallback_set_cache_timeout();

mutex_lock(&fw_lock);
fwc->state = FW_LOADER_START_CACHE;
@@ -1779,7 +1790,7 @@ static void device_cache_fw_images(void)
/* wait for completion of caching firmware for all devices */
async_synchronize_full_domain(&fw_cache_domain);

- loading_timeout = old_timeout;
+ fw_fallback_set_default_timeout();
}

/**
--
2.16.1
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