[PATCH 1/2] rust: pci: document Bar's endianness conversion

[Marko Turk]

Document that the Bar's MMIO backend always assumes little-endian
devices and that its operations automatically convert to CPU endianness.

Signed-off-by: Marko Turk <mt@xxxxxxxxxxxxxx>
Link: https://lore.kernel.org/lkml/DE7F6RR1NAKW.3DJYO44O73941@xxxxxxxxxx/
---
 rust/kernel/pci/io.rs | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/rust/kernel/pci/io.rs b/rust/kernel/pci/io.rs
index 0d55c3139b6f..bfa9df9e9bb9 100644
--- a/rust/kernel/pci/io.rs
+++ b/rust/kernel/pci/io.rs
@@ -18,9 +18,12 @@
 
 /// A PCI BAR to perform I/O-Operations on.
 ///
+/// I/O backend assumes that the device is little-endian and will automatically
+/// convert from little-endian to CPU endianness.
+///
 /// # Invariants
 ///
-/// `Bar` always holds an `IoRaw` inststance that holds a valid pointer to the start of the I/O
+/// `Bar` always holds an `IoRaw` instance that holds a valid pointer to the start of the I/O
 /// memory mapped PCI BAR and its size.
 pub struct Bar<const SIZE: usize = 0> {
     pdev: ARef<Device>,
-- 
2.51.0