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rp/dma: fix use-after-free read.

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This commit is contained in:
Dario Nieuwenhuis 2023-06-05 22:28:14 +02:00
parent d690a1717f
commit 5ee26a5dd1
1 changed files with 3 additions and 2 deletions
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5
embassy-rp/src/dma.rs
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@ -75,16 +75,17 @@ pub unsafe fn write<'a, C: Channel, W: Word>(
)
}
static DUMMY: u32 = 0;
pub unsafe fn write_repeated<'a, C: Channel, W: Word>(
ch: impl Peripheral<P = C> + 'a,
to: *mut W,
len: usize,
dreq: u8,
) -> Transfer<'a, C> {
let dummy: u32 = 0;
copy_inner(
ch,
&dummy as *const u32,
&DUMMY as *const u32,
to as *mut u32,
len,
W::size(),