disable pwm7

hc

2023-11-22 f743a7adbd6e230d66a6206fa115b59fec2d88eb

 kernel/drivers/connector/cn_proc.c
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@@ -32,6 +32,7 @@
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 #include <linux/pid_namespace.h>
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 #include <linux/cn_proc.h>
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+#include <linux/locallock.h>
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 /*
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  * Size of a cn_msg followed by a proc_event structure.  Since the
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@@ -54,10 +55,11 @@
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 /* proc_event_counts is used as the sequence number of the netlink message */
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 static DEFINE_PER_CPU(__u32, proc_event_counts) = { 0 };
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+static DEFINE_LOCAL_IRQ_LOCK(send_msg_lock);
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 static inline void send_msg(struct cn_msg *msg)
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 {
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-	preempt_disable();
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+	local_lock(send_msg_lock);
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 	msg->seq = __this_cpu_inc_return(proc_event_counts) - 1;
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 	((struct proc_event *)msg->data)->cpu = smp_processor_id();
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@@ -70,7 +72,7 @@
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 	 */
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 	cn_netlink_send(msg, 0, CN_IDX_PROC, GFP_NOWAIT);
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-	preempt_enable();
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+	local_unlock(send_msg_lock);
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 }
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 void proc_fork_connector(struct task_struct *task)