6.18-stable review patch. If anyone has any objections, please let me know.
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From: Marko Turk mt@markoturk.info
commit e2f1081ca8f18c146e8f928486deac61eca2b517 upstream.
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 dirk.behme@de.bosch.com Signed-off-by: Marko Turk mt@markoturk.info 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 dakr@kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- 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<u32> { // 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.