gpu: nova-core: falcon: remove unnecessary check

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>

1 files changed, 1 insertions, 8 deletions

diff --git a/drivers/gpu/nova-core/falcon.rs b/drivers/gpu/nova-core/falcon.rs
index a91cbdd5d636..cd05985f5ee6 100644
--- a/drivers/gpu/nova-core/falcon.rs
+++ b/drivers/gpu/nova-core/falcon.rs
@@ -9,8 +9,7 @@ use kernel::{
     dma::{
         Coherent,
         CoherentBox,
-        DmaAddress,
-        DmaMask, //
+        DmaAddress, //
     },
     io::{
         poll::read_poll_timeout,
@@ -534,12 +533,6 @@ impl<'a, E: FalconEngine + 'static> Falcon<'a, E> {
             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);