add wifi6 8852be driver

hc

2024-12-19 9370bb92b2d16684ee45cf24e879c93c509162da

 kernel/drivers/media/pci/ivtv/ivtv-udma.c
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@@ -1,3 +1,4 @@
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+// SPDX-License-Identifier: GPL-2.0-or-later
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 /*
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     User DMA
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@@ -5,19 +6,6 @@
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     Copyright (C) 2004  Chris Kennedy <c@groovy.org>
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     Copyright (C) 2005-2007  Hans Verkuil <hverkuil@xs4all.nl>
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-    This program is free software; you can redistribute it and/or modify
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-    it under the terms of the GNU General Public License as published by
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-    the Free Software Foundation; either version 2 of the License, or
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-    (at your option) any later version.
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-
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-    This program is distributed in the hope that it will be useful,
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-    but WITHOUT ANY WARRANTY; without even the implied warranty of
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-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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-    GNU General Public License for more details.
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-
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-    You should have received a copy of the GNU General Public License
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-    along with this program; if not, write to the Free Software
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-    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
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  */
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10
 
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 #include "ivtv-driver.h"
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@@ -104,7 +92,7 @@
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 {
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 	struct ivtv_dma_page_info user_dma;
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 	struct ivtv_user_dma *dma = &itv->udma;
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-	int i, err;
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+	int err;
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 	IVTV_DEBUG_DMA("ivtv_udma_setup, dst: 0x%08x\n", (unsigned int)ivtv_dest_addr);
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@@ -123,16 +111,15 @@
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 		return -EINVAL;
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 	}
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-	/* Get user pages for DMA Xfer */
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-	err = get_user_pages_unlocked(user_dma.uaddr, user_dma.page_count,
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+	/* Pin user pages for DMA Xfer */
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+	err = pin_user_pages_unlocked(user_dma.uaddr, user_dma.page_count,
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 			dma->map, FOLL_FORCE);
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 	if (user_dma.page_count != err) {
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 		IVTV_DEBUG_WARN("failed to map user pages, returned %d instead of %d\n",
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 			   err, user_dma.page_count);
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 		if (err >= 0) {
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-			for (i = 0; i < err; i++)
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-				put_page(dma->map[i]);
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+			unpin_user_pages(dma->map, err);
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 			return -EINVAL;
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 		}
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 		return err;
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@@ -142,9 +129,7 @@
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 	/* Fill SG List with new values */
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 	if (ivtv_udma_fill_sg_list(dma, &user_dma, 0) < 0) {
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-		for (i = 0; i < dma->page_count; i++) {
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-			put_page(dma->map[i]);
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-		}
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+		unpin_user_pages(dma->map, dma->page_count);
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 		dma->page_count = 0;
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 		return -ENOMEM;
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 	}
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@@ -165,7 +150,6 @@
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 void ivtv_udma_unmap(struct ivtv *itv)
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 {
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 	struct ivtv_user_dma *dma = &itv->udma;
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-	int i;
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 	IVTV_DEBUG_INFO("ivtv_unmap_user_dma\n");
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@@ -181,10 +165,7 @@
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 	/* sync DMA */
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 	ivtv_udma_sync_for_cpu(itv);
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-	/* Release User Pages */
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-	for (i = 0; i < dma->page_count; i++) {
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-		put_page(dma->map[i]);
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-	}
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+	unpin_user_pages(dma->map, dma->page_count);
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 	dma->page_count = 0;
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 }
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