gpu: nova-core: vbios: keep PmuLookupTable local in setup_falcon_data

This does not need to be stored in `FwSecBiosBuilder` so we can remove
it from there, and just create and use it locally in
`setup_falcon_data`.

Reviewed-by: Joel Fernandes <joelagnelf@nvidia.com>
Reviewed-by: John Hubbard <jhubbard@nvidia.com>
Signed-off-by: Eliot Courtney <ecourtney@nvidia.com>
Link: https://patch.msgid.link/20260525-fix-vbios-v5-9-e5e455251537@nvidia.com
Signed-off-by: Danilo Krummrich <dakr@kernel.org>

1 files changed, 6 insertions, 19 deletions

diff --git a/drivers/gpu/nova-core/vbios.rs b/drivers/gpu/nova-core/vbios.rs
index 8a0e16e6c9e8..cadc6dcffefb 100644
--- a/drivers/gpu/nova-core/vbios.rs
+++ b/drivers/gpu/nova-core/vbios.rs
@@ -338,7 +338,6 @@ impl Vbios {
                 Ok(BiosImageType::FwSec) => {
                     let fwsec = FwSecBiosBuilder {
                         base: image,
-                        pmu_lookup_table: None,
                         falcon_ucode_offset: None,
                     };
                     if first_fwsec_image.is_none() {
@@ -711,8 +710,6 @@ struct FwSecBiosBuilder {
     /// Once FwSecBiosBuilder is constructed, the `falcon_ucode_offset` will be copied into a new
     /// [`FwSecBiosImage`].
     ///
-    /// The [`PmuLookupTable`] starts at the offset of the falcon data pointer.
-    pmu_lookup_table: Option<PmuLookupTable>,
     /// The offset of the Falcon ucode.
     falcon_ucode_offset: Option<usize>,
 }
@@ -1012,24 +1009,14 @@ impl FwSecBiosBuilder {
             offset -= first_fwsec.base.data.len();
         }
 
-        if pmu_in_first_fwsec {
-            self.pmu_lookup_table = Some(PmuLookupTable::new(
-                &self.base.dev,
-                &first_fwsec.base.data[offset..],
-            )?);
+        let pmu_lookup_data = if pmu_in_first_fwsec {
+            &first_fwsec.base.data[offset..]
         } else {
-            self.pmu_lookup_table = Some(PmuLookupTable::new(
-                &self.base.dev,
-                &self.base.data[offset..],
-            )?);
-        }
+            self.base.data.get(offset..).ok_or(EINVAL)?
+        };
+        let pmu_lookup_table = PmuLookupTable::new(&self.base.dev, pmu_lookup_data)?;
 
-        match self
-            .pmu_lookup_table
-            .as_ref()
-            .ok_or(EINVAL)?
-            .find_entry_by_type(FALCON_UCODE_ENTRY_APPID_FWSEC_PROD)
-        {
+        match pmu_lookup_table.find_entry_by_type(FALCON_UCODE_ENTRY_APPID_FWSEC_PROD) {
             Ok(entry) => {
                 self.falcon_ucode_offset = Some(
                     usize::from_safe_cast(entry.data)