From 9fcd5003c0363af140a06aba94e62c9e1ea0381e Mon Sep 17 00:00:00 2001
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From: Marc Gonzalez <marc_gonzalez@sigmadesigns.com>
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Date: Mon, 11 Jan 2016 16:45:30 +0100
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Subject: [PATCH] Fix fusion: Unknown symbol tasklist_lock (err 0)
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Commit 28f6569ab7d0 renamed TREE_PREEMPT_RCU to PREEMPT_RCU in 3.19
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As a result, the code incorrectly falls back to using tasklist_lock
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(which was made private in 2.6.18)
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Always use rcu_read_lock on modern kernels.
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Signed-off-by: Marc Gonzalez <marc_gonzalez@sigmadesigns.com>
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---
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linux/drivers/char/fusion/fusionee.c | 4 ++--
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1 file changed, 2 insertions(+), 2 deletions(-)
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diff --git a/linux/drivers/char/fusion/fusionee.c b/linux/drivers/char/fusion/fusionee.c
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index ef067f5bc831..70cd0a665f98 100644
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--- a/linux/drivers/char/fusion/fusionee.c
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+++ b/linux/drivers/char/fusion/fusionee.c
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@@ -925,7 +925,7 @@ fusionee_kill(FusionDev * dev,
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if (f != fusionee && (!target || target == f->id)) {
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struct task_struct *p;
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-#if defined(CONFIG_TREE_RCU) || defined(CONFIG_TREE_PREEMPT_RCU) || defined(CONFIG_TINY_RCU) || defined(rcu_read_lock)
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+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)
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rcu_read_lock();
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#else
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read_lock(&tasklist_lock);
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@@ -946,7 +946,7 @@ fusionee_kill(FusionDev * dev,
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}
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}
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-#if defined(CONFIG_TREE_RCU) || defined(CONFIG_TREE_PREEMPT_RCU) || defined(CONFIG_TINY_RCU) || defined(rcu_read_unlock)
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+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)
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rcu_read_unlock();
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#else
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read_unlock(&tasklist_lock);
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