From 04dd17822334871b23ea2862f7798fb0e0007777 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Sat, 11 May 2024 08:53:19 +0000
Subject: [PATCH] change otg to host mode
---
kernel/drivers/usb/misc/appledisplay.c | 27 ++++-----------------------
1 files changed, 4 insertions(+), 23 deletions(-)
diff --git a/kernel/drivers/usb/misc/appledisplay.c b/kernel/drivers/usb/misc/appledisplay.c
index 718d692..c8098e9 100644
--- a/kernel/drivers/usb/misc/appledisplay.c
+++ b/kernel/drivers/usb/misc/appledisplay.c
@@ -69,7 +69,6 @@
struct delayed_work work;
int button_pressed;
- spinlock_t lock;
struct mutex sysfslock; /* concurrent read and write */
};
@@ -79,7 +78,6 @@
{
struct appledisplay *pdata = urb->context;
struct device *dev = &pdata->udev->dev;
- unsigned long flags;
int status = urb->status;
int retval;
@@ -91,7 +89,7 @@
dev_err(dev,
"OVERFLOW with data length %d, actual length is %d\n",
ACD_URB_BUFFER_LEN, pdata->urb->actual_length);
- /* fall through */
+ fallthrough;
case -ECONNRESET:
case -ENOENT:
case -ESHUTDOWN:
@@ -105,8 +103,6 @@
goto exit;
}
- spin_lock_irqsave(&pdata->lock, flags);
-
switch(pdata->urbdata[1]) {
case ACD_BTN_BRIGHT_UP:
case ACD_BTN_BRIGHT_DOWN:
@@ -118,8 +114,6 @@
pdata->button_pressed = 0;
break;
}
-
- spin_unlock_irqrestore(&pdata->lock, flags);
exit:
retval = usb_submit_urb(pdata->urb, GFP_ATOMIC);
@@ -234,7 +228,6 @@
pdata->udev = udev;
- spin_lock_init(&pdata->lock);
INIT_DELAYED_WORK(&pdata->work, appledisplay_work);
mutex_init(&pdata->sysfslock);
@@ -266,6 +259,7 @@
usb_rcvintpipe(udev, int_in_endpointAddr),
pdata->urbdata, ACD_URB_BUFFER_LEN, appledisplay_complete,
pdata, 1);
+ pdata->urb->transfer_flags = URB_NO_TRANSFER_DMA_MAP;
if (usb_submit_urb(pdata->urb, GFP_KERNEL)) {
retval = -EIO;
dev_err(&iface->dev, "Submitting URB failed\n");
@@ -311,8 +305,7 @@
if (pdata->urb) {
usb_kill_urb(pdata->urb);
cancel_delayed_work_sync(&pdata->work);
- if (pdata->urbdata)
- usb_free_coherent(pdata->udev, ACD_URB_BUFFER_LEN,
+ usb_free_coherent(pdata->udev, ACD_URB_BUFFER_LEN,
pdata->urbdata, pdata->urb->transfer_dma);
usb_free_urb(pdata->urb);
}
@@ -349,20 +342,8 @@
.disconnect = appledisplay_disconnect,
.id_table = appledisplay_table,
};
-
-static int __init appledisplay_init(void)
-{
- return usb_register(&appledisplay_driver);
-}
-
-static void __exit appledisplay_exit(void)
-{
- usb_deregister(&appledisplay_driver);
-}
+module_usb_driver(appledisplay_driver);
MODULE_AUTHOR("Michael Hanselmann");
MODULE_DESCRIPTION("Apple Cinema Display driver");
MODULE_LICENSE("GPL");
-
-module_init(appledisplay_init);
-module_exit(appledisplay_exit);
--
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