From 6e6e500f8a4f4ba610c7df3dcc209cb4372255a5 Mon Sep 17 00:00:00 2001
From: occheung <dc@m-labs.hk>
Date: Tue, 18 Aug 2020 15:25:32 +0800
Subject: [PATCH] spi_slave: auto deselect chip

---
 src/spi_slave.rs | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/spi_slave.rs b/src/spi_slave.rs
index c4a1fb6..159e460 100644
--- a/src/spi_slave.rs
+++ b/src/spi_slave.rs
@@ -49,7 +49,9 @@ where
 	fn transfer<'w>(&mut self, words: &'w mut[u8]) -> Result<&'w [u8], Self::Error> {
 		self.0.do_on_get_ref_mut_data(move |mut dev| {
 			dev.select_chip(self.1);
-			dev.spi.transfer(words).map_err(Error::SPI)
+			let result = dev.spi.transfer(words).map_err(Error::SPI);
+			dev.select_chip(0);
+			result
 		})	
 	}
 }