From e3e12f52b214121840b44c91de5b3e5af5d3eb84 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Mon, 06 Nov 2023 03:04:41 +0000
Subject: [PATCH] rk3568 rt init
---
kernel/drivers/of/base.c | 19 +++++++++++++------
1 files changed, 13 insertions(+), 6 deletions(-)
diff --git a/kernel/drivers/of/base.c b/kernel/drivers/of/base.c
index b28dee2..9a4af2e 100644
--- a/kernel/drivers/of/base.c
+++ b/kernel/drivers/of/base.c
@@ -130,31 +130,34 @@
/*
* Caller must hold devtree_lock.
*/
-static void __of_free_phandle_cache(void)
+static struct device_node** __of_free_phandle_cache(void)
{
u32 cache_entries = phandle_cache_mask + 1;
u32 k;
+ struct device_node **shadow;
if (!phandle_cache)
- return;
+ return NULL;
for (k = 0; k < cache_entries; k++)
of_node_put(phandle_cache[k]);
- kfree(phandle_cache);
+ shadow = phandle_cache;
phandle_cache = NULL;
+ return shadow;
}
int of_free_phandle_cache(void)
{
unsigned long flags;
+ struct device_node **shadow;
raw_spin_lock_irqsave(&devtree_lock, flags);
- __of_free_phandle_cache();
+ shadow = __of_free_phandle_cache();
raw_spin_unlock_irqrestore(&devtree_lock, flags);
-
+ kfree(shadow);
return 0;
}
#if !defined(CONFIG_MODULES)
@@ -189,10 +192,11 @@
u32 cache_entries;
struct device_node *np;
u32 phandles = 0;
+ struct device_node **shadow;
raw_spin_lock_irqsave(&devtree_lock, flags);
- __of_free_phandle_cache();
+ shadow = __of_free_phandle_cache();
for_each_of_allnodes(np)
if (np->phandle && np->phandle != OF_PHANDLE_ILLEGAL)
@@ -200,12 +204,14 @@
if (!phandles)
goto out;
+ raw_spin_unlock_irqrestore(&devtree_lock, flags);
cache_entries = roundup_pow_of_two(phandles);
phandle_cache_mask = cache_entries - 1;
phandle_cache = kcalloc(cache_entries, sizeof(*phandle_cache),
GFP_ATOMIC);
+ raw_spin_lock_irqsave(&devtree_lock, flags);
if (!phandle_cache)
goto out;
@@ -217,6 +223,7 @@
out:
raw_spin_unlock_irqrestore(&devtree_lock, flags);
+ kfree(shadow);
}
void __init of_core_init(void)
--
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