From 4d8fa9d3d1fe1d70fe7d59537acf49797f6010a1 Mon Sep 17 00:00:00 2001 From: Jonas Gorski 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 --- 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;