openwrt/target/linux/brcm63xx/patches-3.10/054-spi-bcm63xx-don-t-substract-prepend-length-from-tota.patch
Jonas Gorski af7e570c3b brcm63xx: fix legacy spi tranfers >= 256 bytes
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
2014-01-13 12:11:58 +00:00

27 lines
751 B
Diff

From e85583b12b023773b488cf8406f11719a4037461 Mon Sep 17 00:00:00 2001
From: Jonas Gorski <jogo@openwrt.org>
Date: Sun, 1 Dec 2013 16:16:44 +0100
Subject: [PATCH 1/2] spi/bcm63xx: don't substract prepend length from total
length
The spi command must include the full message length including any
prepended writes, else transfers larger than 256 bytes will be
incomplete.
Signed-off-by: Jonas Gorski <jogo@openwrt.org>
---
drivers/spi/spi-bcm63xx.c | 2 --
1 file changed, 2 deletions(-)
--- a/drivers/spi/spi-bcm63xx.c
+++ b/drivers/spi/spi-bcm63xx.c
@@ -180,8 +180,6 @@ static int bcm63xx_txrx_bufs(struct spi_
transfer_list);
}
- len -= prepend_len;
-
init_completion(&bs->done);
/* Fill in the Message control register */