mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-27 01:11:14 +00:00
af7e570c3b
Fixes e.g. SPI flash access on BCM6358/BCM6368. Transfers < 256 bytes are not affected. Signed-off-by: Jonas Gorski <jogo@openwrt.org> SVN-Revision: 39265
32 lines
880 B
Diff
32 lines
880 B
Diff
From 4d8fa9d3d1fe1d70fe7d59537acf49797f6010a1 Mon Sep 17 00:00:00 2001
|
|
From: Jonas Gorski <jogo@openwrt.org>
|
|
Date: Sun, 1 Dec 2013 16:19:46 +0100
|
|
Subject: [PATCH 2/2] spi/bcm63xx: don't reject reads >= 256 bytes
|
|
|
|
The rx_tail register is only 8 bit wide, so it will wrap around
|
|
after 256 read bytes. This makes it rather meaningless, so drop any
|
|
usage of it to not treat reads over 256 as failed.
|
|
|
|
Signed-off-by: Jonas Gorski <jogo@openwrt.org>
|
|
---
|
|
drivers/spi/spi-bcm63xx.c | 8 +-------
|
|
1 file changed, 1 insertion(+), 7 deletions(-)
|
|
|
|
--- a/drivers/spi/spi-bcm63xx.c
|
|
+++ b/drivers/spi/spi-bcm63xx.c
|
|
@@ -214,13 +214,7 @@ static int bcm63xx_txrx_bufs(struct spi_
|
|
if (!timeout)
|
|
return -ETIMEDOUT;
|
|
|
|
- /* read out all data */
|
|
- rx_tail = bcm_spi_readb(bs, SPI_RX_TAIL);
|
|
-
|
|
- if (do_rx && rx_tail != len)
|
|
- return -EIO;
|
|
-
|
|
- if (!rx_tail)
|
|
+ if (!do_rx)
|
|
return 0;
|
|
|
|
len = 0;
|