From 23fa18eaa71266feff7ba8d83022d9e1cc83c65a Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Fri, 10 May 2024 07:42:03 +0000
Subject: [PATCH] disable pwm7
---
kernel/drivers/hid/intel-ish-hid/ishtp/client-buffers.c | 60 ++++++++++++++++++++++++++++++++++++++++++++++++++----------
1 files changed, 50 insertions(+), 10 deletions(-)
diff --git a/kernel/drivers/hid/intel-ish-hid/ishtp/client-buffers.c b/kernel/drivers/hid/intel-ish-hid/ishtp/client-buffers.c
index c41dbb1..513d7a4 100644
--- a/kernel/drivers/hid/intel-ish-hid/ishtp/client-buffers.c
+++ b/kernel/drivers/hid/intel-ish-hid/ishtp/client-buffers.c
@@ -1,17 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0-only
/*
* ISHTP Ring Buffers
*
* Copyright (c) 2003-2016, Intel Corporation.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms and conditions of the GNU General Public License,
- * version 2, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
- * more details.
- *
*/
#include <linux/slab.h>
@@ -69,6 +60,8 @@
int j;
unsigned long flags;
+ cl->tx_ring_free_size = 0;
+
/* Allocate pool to free Tx bufs */
for (j = 0; j < cl->tx_ring_size; ++j) {
struct ishtp_cl_tx_ring *tx_buf;
@@ -85,6 +78,7 @@
spin_lock_irqsave(&cl->tx_free_list_spinlock, flags);
list_add_tail(&tx_buf->list, &cl->tx_free_list.list);
+ ++cl->tx_ring_free_size;
spin_unlock_irqrestore(&cl->tx_free_list_spinlock, flags);
}
return 0;
@@ -144,6 +138,7 @@
tx_buf = list_entry(cl->tx_free_list.list.next,
struct ishtp_cl_tx_ring, list);
list_del(&tx_buf->list);
+ --cl->tx_ring_free_size;
kfree(tx_buf->send_buf.data);
kfree(tx_buf);
}
@@ -255,3 +250,48 @@
return rets;
}
EXPORT_SYMBOL(ishtp_cl_io_rb_recycle);
+
+/**
+ * ishtp_cl_tx_empty() -test whether client device tx buffer is empty
+ * @cl: Pointer to client device instance
+ *
+ * Look client device tx buffer list, and check whether this list is empty
+ *
+ * Return: true if client tx buffer list is empty else false
+ */
+bool ishtp_cl_tx_empty(struct ishtp_cl *cl)
+{
+ int tx_list_empty;
+ unsigned long tx_flags;
+
+ spin_lock_irqsave(&cl->tx_list_spinlock, tx_flags);
+ tx_list_empty = list_empty(&cl->tx_list.list);
+ spin_unlock_irqrestore(&cl->tx_list_spinlock, tx_flags);
+
+ return !!tx_list_empty;
+}
+EXPORT_SYMBOL(ishtp_cl_tx_empty);
+
+/**
+ * ishtp_cl_rx_get_rb() -Get a rb from client device rx buffer list
+ * @cl: Pointer to client device instance
+ *
+ * Check client device in-processing buffer list and get a rb from it.
+ *
+ * Return: rb pointer if buffer list isn't empty else NULL
+ */
+struct ishtp_cl_rb *ishtp_cl_rx_get_rb(struct ishtp_cl *cl)
+{
+ unsigned long rx_flags;
+ struct ishtp_cl_rb *rb;
+
+ spin_lock_irqsave(&cl->in_process_spinlock, rx_flags);
+ rb = list_first_entry_or_null(&cl->in_process_list.list,
+ struct ishtp_cl_rb, list);
+ if (rb)
+ list_del_init(&rb->list);
+ spin_unlock_irqrestore(&cl->in_process_spinlock, rx_flags);
+
+ return rb;
+}
+EXPORT_SYMBOL(ishtp_cl_rx_get_rb);
--
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