From d1a365fb927b303db6786662f02dfad9a94d91c7 Mon Sep 17 00:00:00 2001
From: xdavidwu <xdavidwuph@gmail.com>
Date: Thu, 30 Jun 2022 10:26:22 +0800
Subject: [PATCH] i2c: wrap errors to errors::error

---
 i2c/smbus/libi2c.ha | 18 ++++++++++++------
 1 file changed, 12 insertions(+), 6 deletions(-)

diff --git a/i2c/smbus/libi2c.ha b/i2c/smbus/libi2c.ha
index d35b998..84b33dc 100644
--- a/i2c/smbus/libi2c.ha
+++ b/i2c/smbus/libi2c.ha
@@ -1,38 +1,44 @@
+use errors;
 use i2c;
 use io;
 use rt;
 
 export fn access(file: io::file, read_write: u8, command: u8, _size: u32, data: *data)
-		(int | rt::errno) = {
+		(int | errors::error) = {
 	const args = ioctl_data {
 		read_write = read_write,
 		command = command,
 		_size = _size,
 		data = data,
 	};
-	return rt::ioctl(file: int, i2c::I2C_SMBUS, &args);
+	return match (rt::ioctl(file: int, i2c::I2C_SMBUS, &args)) {
+	case let i: int =>
+		yield i;
+	case let e: rt::errno =>
+		yield errors::errno(e);
+	};
 };
 
-export fn read_byte_data(file: io::file, command: u8) (u8 | rt::errno) = {
+export fn read_byte_data(file: io::file, command: u8) (u8 | errors::error) = {
 	const data = data {...};
 	access(file, READ, command, BYTE_DATA, &data)?;
 	return data.byte;
 };
 
-export fn read_word_data(file: io::file, command: u8) (u16 | rt::errno) = {
+export fn read_word_data(file: io::file, command: u8) (u16 | errors::error) = {
 	const data = data {...};
 	access(file, READ, command, WORD_DATA, &data)?;
 	return data.word;
 };
 
-export fn write_byte_data(file: io::file, command: u8, value: u8) (void | rt::errno) = {
+export fn write_byte_data(file: io::file, command: u8, value: u8) (void | errors::error) = {
 	const data = data {
 		byte = value,
 	};
 	access(file, WRITE, command, BYTE_DATA, &data)?;
 };
 
-export fn write_word_data(file: io::file, command: u8, value: u16) (void | rt::errno) = {
+export fn write_word_data(file: io::file, command: u8, value: u16) (void | errors::error) = {
 	const data = data {
 		word = value,
 	};
-- 
2.45.2