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gpu: nova-core: falcon: remove unnecessary check

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The `try_with_base` call performed on `NV_PFALCON_FALCON_DMATRFBASE1`
already returns `EOVERFLOW` if the address is too large for the
register, making this check redundant.

Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
Link: https://patch.msgid.link/20260805-falcon-dma-projections-v2-1-4cc9f3f13ee9@nvidia.com
Signed-off-by: Danilo Krummrich <dakr@kernel.org>
This commit is contained in:
Alexandre Courbot 2026-08-05 14:01:45 +09:00 committed by Danilo Krummrich
parent 7923d0bc8e
commit d1dc8faf11
1 changed files with 1 additions and 8 deletions
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9
drivers/gpu/nova-core/falcon.rs
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@ -9,8 +9,7 @@
dma::{
Coherent,
CoherentBox,
DmaAddress,
DmaMask, //
DmaAddress, //
},
io::{
poll::read_poll_timeout,
@ -534,12 +533,6 @@ fn dma_wr(
return Err(EINVAL);
}
// The DMATRFBASE/1 register pair only supports a 49-bit address.
if dma_start > DmaMask::new::<49>().value() {
dev_err!(self.dev, "DMA address {:#x} exceeds 49 bits\n", dma_start);
return Err(ERANGE);
}
// DMA transfers can only be done in units of 256 bytes. Compute how many such transfers we
// need to perform.
let num_transfers = load_offsets.len.div_ceil(DMA_LEN);