add dts config

hc

2023-12-06 08f87f769b595151be1afeff53e144f543faa614

 kernel/drivers/gpu/drm/udl/udl_transfer.c
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@@ -1,21 +1,14 @@
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+// SPDX-License-Identifier: GPL-2.0-only
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 /*
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  * Copyright (C) 2012 Red Hat
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  * based in parts on udlfb.c:
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  * Copyright (C) 2009 Roberto De Ioris <roberto@unbit.it>
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  * Copyright (C) 2009 Jaya Kumar <jayakumar.lkml@gmail.com>
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  * Copyright (C) 2009 Bernie Thompson <bernie@plugable.com>
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- *
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- * This file is subject to the terms and conditions of the GNU General Public
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- * License v2. See the file COPYING in the main directory of this archive for
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- * more details.
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  */
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-#include <linux/module.h>
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-#include <linux/slab.h>
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-#include <linux/fb.h>
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 #include <asm/unaligned.h>
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-#include <drm/drmP.h>
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 #include "udl_drv.h"
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 #define MAX_CMD_PIXELS		255
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@@ -219,8 +212,7 @@
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 int udl_render_hline(struct drm_device *dev, int log_bpp, struct urb **urb_ptr,
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 		     const char *front, char **urb_buf_ptr,
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 		     u32 byte_offset, u32 device_byte_offset,
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-		     u32 byte_width,
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-		     int *ident_ptr, int *sent_ptr)
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+		     u32 byte_width)
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 {
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 	const u8 *line_start, *line_end, *next_pixel;
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 	u32 base16 = 0 + (device_byte_offset >> log_bpp) * 2;
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@@ -242,12 +234,12 @@
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 		if (cmd >= cmd_end) {
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 			int len = cmd - (u8 *) urb->transfer_buffer;
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-			if (udl_submit_urb(dev, urb, len))
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-				return 1; /* lost pixels is set */
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-			*sent_ptr += len;
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+			int ret = udl_submit_urb(dev, urb, len);
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+			if (ret)
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+				return ret;
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 			urb = udl_get_urb(dev);
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 			if (!urb)
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-				return 1; /* lost_pixels is set */
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+				return -EAGAIN;
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 			*urb_ptr = urb;
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 			cmd = urb->transfer_buffer;
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 			cmd_end = &cmd[urb->transfer_buffer_length];
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@@ -258,4 +250,3 @@
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 	return 0;
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 }
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-