[PATCH 14/17] nova-core: remove an unnecessary register read: HWCFG1

Joel Fernandes posted 17 patches 5 months, 1 week ago
There is a newer version of this series
[PATCH 14/17] nova-core: remove an unnecessary register read: HWCFG1
Posted by Joel Fernandes 5 months, 1 week ago
From: John Hubbard <jhubbard@nvidia.com>

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>
---
 drivers/gpu/nova-core/falcon.rs | 5 -----
 1 file changed, 5 deletions(-)

diff --git a/drivers/gpu/nova-core/falcon.rs b/drivers/gpu/nova-core/falcon.rs
index 05bde1f161ea..023f9b575a5d 100644
--- a/drivers/gpu/nova-core/falcon.rs
+++ b/drivers/gpu/nova-core/falcon.rs
@@ -355,11 +355,6 @@ 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() {
-- 
2.34.1