linux-kernel - [PATCH 2/4] gpu: nova-core: fw: move appropriate code into pin initializer

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Message-ID: <20251218155239.25243-3-dakr@kernel.org>
Date: Thu, 18 Dec 2025 16:50:49 +0100
From: Danilo Krummrich <dakr@...nel.org>
To: acourbot@...dia.com,
	jhubbard@...dia.com,
	apopple@...dia.com,
	joelagnelf@...dia.com,
	aliceryhl@...gle.com,
	lossin@...nel.org
Cc: nouveau@...ts.freedesktop.org,
	dri-devel@...ts.freedesktop.org,
	rust-for-linux@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Danilo Krummrich <dakr@...nel.org>
Subject: [PATCH 2/4] gpu: nova-core: fw: move appropriate code into pin initializer

Relocate the code that technically fits in the pin initializer into the
initializer itself.

While, thanks to pin_init_scope(), it is also possible to keep it as is,
moving appropriate code into the initializer has the advantage that it
structures the dependencies of fields naturally.

For instance, intermediate data that is only needed for a single field
goes into the initializer block of this field, making it obvious that it
is not needed by anything else.

On the other hand, intermediate data that is needed for multiple fields
to initialize remains above the initializer, naturally indicating that
it is needed my multiple fields.

Signed-off-by: Danilo Krummrich <dakr@...nel.org>
---
 drivers/gpu/nova-core/firmware/gsp.rs | 34 ++++++++++++++-------------
 1 file changed, 18 insertions(+), 16 deletions(-)

diff --git a/drivers/gpu/nova-core/firmware/gsp.rs b/drivers/gpu/nova-core/firmware/gsp.rs
index e034268be3c5..da97814cf859 100644
--- a/drivers/gpu/nova-core/firmware/gsp.rs
+++ b/drivers/gpu/nova-core/firmware/gsp.rs
@@ -159,18 +159,9 @@ pub(crate) fn new<'a>(
         ver: &'a str,
     ) -> impl PinInit<Self, Error> + 'a {
         pin_init::pin_init_scope(move || {
-            let fw = super::request_firmware(dev, chipset, "gsp", ver)?;
+            let firmware = super::request_firmware(dev, chipset, "gsp", ver)?;
 
-            let fw_section = elf::elf64_section(fw.data(), ".fwimage").ok_or(EINVAL)?;
-
-            let sigs_section = match chipset.arch() {
-                Architecture::Ampere => ".fwsignature_ga10x",
-                Architecture::Ada => ".fwsignature_ad10x",
-                _ => return Err(ENOTSUPP),
-            };
-            let signatures = elf::elf64_section(fw.data(), sigs_section)
-                .ok_or(EINVAL)
-                .and_then(|data| DmaObject::from_data(dev, data))?;
+            let fw_section = elf::elf64_section(firmware.data(), ".fwimage").ok_or(EINVAL)?;
 
             let size = fw_section.len();
 
@@ -183,9 +174,6 @@ pub(crate) fn new<'a>(
                 })
                 .map_err(|_| ENOMEM)?;
 
-            let bl = super::request_firmware(dev, chipset, "bootloader", ver)?;
-            let bootloader = RiscvFirmware::new(dev, &bl)?;
-
             Ok(try_pin_init!(Self {
                 fw <- SGTable::new(dev, fw_vvec, DataDirection::ToDevice, GFP_KERNEL),
                 level2 <- {
@@ -227,8 +215,22 @@ pub(crate) fn new<'a>(
                     DmaObject::from_data(dev, &level0_data)?
                 },
                 size,
-                signatures,
-                bootloader,
+                signatures: {
+                    let sigs_section = match chipset.arch() {
+                        Architecture::Ampere => ".fwsignature_ga10x",
+                        Architecture::Ada => ".fwsignature_ad10x",
+                        _ => return Err(ENOTSUPP),
+                    };
+
+                    elf::elf64_section(firmware.data(), sigs_section)
+                        .ok_or(EINVAL)
+                        .and_then(|data| DmaObject::from_data(dev, data))?
+                },
+                bootloader: {
+                    let bl = super::request_firmware(dev, chipset, "bootloader", ver)?;
+
+                    RiscvFirmware::new(dev, &bl)?
+                },
             }))
         })
     }
-- 
2.52.0