From 95099d4622f8cb224d94e314c7a8e0df60b13f87 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Sat, 09 Dec 2023 08:38:01 +0000
Subject: [PATCH] enable docker ppp
---
kernel/drivers/media/v4l2-core/videobuf-dma-contig.c | 15 +++++----------
1 files changed, 5 insertions(+), 10 deletions(-)
diff --git a/kernel/drivers/media/v4l2-core/videobuf-dma-contig.c b/kernel/drivers/media/v4l2-core/videobuf-dma-contig.c
index a7a9bcc..52312ce 100644
--- a/kernel/drivers/media/v4l2-core/videobuf-dma-contig.c
+++ b/kernel/drivers/media/v4l2-core/videobuf-dma-contig.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
/*
* helper functions for physically contiguous capture buffers
*
@@ -8,10 +9,6 @@
*
* Based on videobuf-vmalloc.c,
* (c) 2007 Mauro Carvalho Chehab, <mchehab@kernel.org>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2
*/
#include <linux/init.h>
@@ -172,7 +169,7 @@
mem->size = PAGE_ALIGN(vb->size + offset);
ret = -EINVAL;
- down_read(&mm->mmap_sem);
+ mmap_read_lock(mm);
vma = find_vma(mm, untagged_baddr);
if (!vma)
@@ -204,7 +201,7 @@
}
out_up:
- up_read(¤t->mm->mmap_sem);
+ mmap_read_unlock(current->mm);
return ret;
}
@@ -249,7 +246,7 @@
/* All handling should be done by __videobuf_mmap_mapper() */
if (!mem->vaddr) {
- dev_err(q->dev, "memory is not alloced/mmapped.\n");
+ dev_err(q->dev, "memory is not allocated/mmapped.\n");
return -EINVAL;
}
break;
@@ -281,7 +278,6 @@
struct videobuf_dma_contig_memory *mem;
struct videobuf_mapping *map;
int retval;
- unsigned long size;
dev_dbg(q->dev, "%s\n", __func__);
@@ -304,7 +300,6 @@
goto error;
/* Try to remap memory */
- size = vma->vm_end - vma->vm_start;
vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
/* the "vm_pgoff" is just used in v4l2 to find the
@@ -315,7 +310,7 @@
*/
vma->vm_pgoff = 0;
- retval = vm_iomap_memory(vma, mem->dma_handle, size);
+ retval = vm_iomap_memory(vma, mem->dma_handle, mem->size);
if (retval) {
dev_err(q->dev, "mmap: remap failed with error %d. ",
retval);
--
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