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gpu: nova-core: remove an unnecessary register read: HWCFG1

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This register read is not required in order to bring up any of the GPUs,
and it is read too early on Hopper/Blackwell+ GPUs anyway. So just stop
doing this.

Signed-off-by: John Hubbard <jhubbard@nvidia.com>
Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
Message-ID: <20251025014050.585153-2-jhubbard@nvidia.com>
This commit is contained in:
John Hubbard 2025-10-24 18:40:49 -07:00 committed by Alexandre Courbot
parent f6797dca29
commit 1784fb79d6
1 changed files with 0 additions and 5 deletions
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5
drivers/gpu/nova-core/falcon.rs
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@ -371,11 +371,6 @@ pub(crate) fn new(
bar: &Bar0,
need_riscv: bool,
) -> Result<Self> {
let hwcfg1 = regs::NV_PFALCON_FALCON_HWCFG1::read(bar, &E::ID);
// Check that the revision and security model contain valid values.
let _ = hwcfg1.core_rev()?;
let _ = hwcfg1.security_model()?;
if need_riscv {
let hwcfg2 = regs::NV_PFALCON_FALCON_HWCFG2::read(bar, &E::ID);
if !hwcfg2.riscv() {