From e2f1081ca8f18c146e8f928486deac61eca2b517 Mon Sep 17 00:00:00 2001 From: Marko Turk Date: Wed, 10 Dec 2025 12:25:51 +0100 Subject: [PATCH] samples: rust: fix endianness issue in rust_driver_pci MMIO backend of PCI Bar always assumes little-endian devices and will convert to CPU endianness automatically. Remove the u32::from_le conversion which would cause a bug on big-endian machines. Cc: stable@vger.kernel.org Reviewed-by: Dirk Behme Signed-off-by: Marko Turk Fixes: 685376d18e9a ("samples: rust: add Rust PCI sample driver") Link: https://patch.msgid.link/20251210112503.62925-2-mt@markoturk.info Signed-off-by: Danilo Krummrich --- samples/rust/rust_driver_pci.rs | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/samples/rust/rust_driver_pci.rs b/samples/rust/rust_driver_pci.rs index 5823787bea8e..fa677991a5c4 100644 --- a/samples/rust/rust_driver_pci.rs +++ b/samples/rust/rust_driver_pci.rs @@ -48,7 +48,7 @@ fn testdev(index: &TestIndex, bar: &Bar0) -> Result { // Select the test. bar.write8(index.0, Regs::TEST); - let offset = u32::from_le(bar.read32(Regs::OFFSET)) as usize; + let offset = bar.read32(Regs::OFFSET) as usize; let data = bar.read8(Regs::DATA); // Write `data` to `offset` to increase `count` by one.