gpu: nova-core: replace `as` with `from` conversions where possible

The `as` operator is best avoided as it silently drops bits if the
destination type is smaller that the source.

For data types where this is clearly not the case, use `from` to
unambiguously signal that these conversions are lossless.

Acked-by: Danilo Krummrich <dakr@kernel.org>
Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
Message-ID: <20251029-nova-as-v3-1-6a30c7333ad9@nvidia.com>

1 files changed, 2 insertions, 2 deletions

diff --git a/drivers/gpu/nova-core/firmware/fwsec.rs b/drivers/gpu/nova-core/firmware/fwsec.rs
index 8edbb5c0572c..dd3420aaa2bf 100644
--- a/drivers/gpu/nova-core/firmware/fwsec.rs
+++ b/drivers/gpu/nova-core/firmware/fwsec.rs
@@ -259,13 +259,13 @@ impl FirmwareDmaObject<FwsecFirmware, Unsigned> {
         }
 
         // Find the DMEM mapper section in the firmware.
-        for i in 0..hdr.entry_count as usize {
+        for i in 0..usize::from(hdr.entry_count) {
             let app: &FalconAppifV1 =
             // SAFETY: we have exclusive access to `dma_object`.
             unsafe {
                 transmute(
                     &dma_object,
-                    hdr_offset + hdr.header_size as usize + i * hdr.entry_size as usize
+                    hdr_offset + usize::from(hdr.header_size) + i * usize::from(hdr.entry_size)
                 )
             }?;