From f2a08b404691ef3e7be6ce81c185335cfc68b6db Mon Sep 17 00:00:00 2001 From: Qipan Li Date: Tue, 2 Sep 2014 17:01:03 +0800 Subject: [PATCH] spi: sirf: enable RX_IO_DMA_INT interrupt in spi interrupt handler, we need check RX_IO_DMA status to ensure rx fifo have received the specify count data. if not set, the while statement in spi isr function will keep loop, at last, make the kernel hang. [The code is actually there in the interrupt handler but apparently it needs the interrupt unmasking so the handler sees the status -- broonie] Signed-off-by: Qipan Li Signed-off-by: Barry Song Signed-off-by: Mark Brown Cc: stable@vger.kernel.org --- drivers/spi/spi-sirf.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/spi/spi-sirf.c b/drivers/spi/spi-sirf.c index 95ac276eaafe..1a5161336730 100644 --- a/drivers/spi/spi-sirf.c +++ b/drivers/spi/spi-sirf.c @@ -438,7 +438,8 @@ static void spi_sirfsoc_pio_transfer(struct spi_device *spi, sspi->tx_word(sspi); writel(SIRFSOC_SPI_TXFIFO_EMPTY_INT_EN | SIRFSOC_SPI_TX_UFLOW_INT_EN | - SIRFSOC_SPI_RX_OFLOW_INT_EN, + SIRFSOC_SPI_RX_OFLOW_INT_EN | + SIRFSOC_SPI_RX_IO_DMA_INT_EN, sspi->base + SIRFSOC_SPI_INT_EN); writel(SIRFSOC_SPI_RX_EN | SIRFSOC_SPI_TX_EN, sspi->base + SIRFSOC_SPI_TX_RX_EN); -- 2.34.1