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Revert "interconnect: Fix locking for runpm vs reclaim"

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This reverts commit 9be2957f01 which is
commit af42269c35 upstream.

It is reported to cause boot crashes in Android systems, so revert it
from the stable trees for now.

Cc: Rob Clark <robdclark@chromium.org>
Cc: Georgi Djakov <djakov@kernel.org>
Cc: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Greg Kroah-Hartman
2024-03-04 14:10:12 +01:00
parent ead6852245
commit fe549d8e97
1 changed files with 2 additions and 6 deletions
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8
drivers/interconnect/core.c
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@@ -30,7 +30,6 @@ static LIST_HEAD(icc_providers);
static int providers_count;
static bool synced_state;
static DEFINE_MUTEX(icc_lock);
static DEFINE_MUTEX(icc_bw_lock);
static struct dentry *icc_debugfs_dir;
static void icc_summary_show_one(struct seq_file *s, struct icc_node *n)
@@ -637,7 +636,7 @@ int icc_set_bw(struct icc_path *path, u32 avg_bw, u32 peak_bw)
if (WARN_ON(IS_ERR(path) || !path->num_nodes))
return -EINVAL;
mutex_lock(&icc_bw_lock);
mutex_lock(&icc_lock);
old_avg = path->reqs[0].avg_bw;
old_peak = path->reqs[0].peak_bw;
@@ -669,7 +668,7 @@ int icc_set_bw(struct icc_path *path, u32 avg_bw, u32 peak_bw)
apply_constraints(path);
}
mutex_unlock(&icc_bw_lock);
mutex_unlock(&icc_lock);
trace_icc_set_bw_end(path, ret);
@@ -972,7 +971,6 @@ void icc_node_add(struct icc_node *node, struct icc_provider *provider)
return;
mutex_lock(&icc_lock);
mutex_lock(&icc_bw_lock);
node->provider = provider;
list_add_tail(&node->node_list, &provider->nodes);
@@ -998,7 +996,6 @@ void icc_node_add(struct icc_node *node, struct icc_provider *provider)
node->avg_bw = 0;
node->peak_bw = 0;
mutex_unlock(&icc_bw_lock);
mutex_unlock(&icc_lock);
}
EXPORT_SYMBOL_GPL(icc_node_add);
@@ -1126,7 +1123,6 @@ void icc_sync_state(struct device *dev)
return;
mutex_lock(&icc_lock);
mutex_lock(&icc_bw_lock);
synced_state = true;
list_for_each_entry(p, &icc_providers, provider_list) {
dev_dbg(p->dev, "interconnect provider is in synced state\n");