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/usb/mon/mon_bin.c | 5 +++++
1 files changed, 5 insertions(+), 0 deletions(-)
diff --git a/kernel/drivers/usb/mon/mon_bin.c b/kernel/drivers/usb/mon/mon_bin.c
index f48a23a..094e812 100644
--- a/kernel/drivers/usb/mon/mon_bin.c
+++ b/kernel/drivers/usb/mon/mon_bin.c
@@ -1268,6 +1268,11 @@
{
/* don't do anything here: "fault" will set up page table entries */
vma->vm_ops = &mon_bin_vm_ops;
+
+ if (vma->vm_flags & VM_WRITE)
+ return -EPERM;
+
+ vma->vm_flags &= ~VM_MAYWRITE;
vma->vm_flags |= VM_DONTEXPAND | VM_DONTDUMP;
vma->vm_private_data = filp->private_data;
mon_bin_vma_open(vma);
--
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