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authorQipan Li <Qipan.Li@csr.com>2014-09-02 13:01:03 +0400
committerMark Brown <broonie@kernel.org>2014-09-04 23:25:07 +0400
commitf2a08b404691ef3e7be6ce81c185335cfc68b6db (patch)
treead42fd19bec8e2a25fe8d67cb748b92abb2a7c6e /drivers/spi/spi-sirf.c
parent7d1311b93e58ed55f3a31cc8f94c4b8fe988a2b9 (diff)
downloadlinux-f2a08b404691ef3e7be6ce81c185335cfc68b6db.tar.xz
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 <Qipan.Li@csr.com> Signed-off-by: Barry Song <Baohua.Song@csr.com> Signed-off-by: Mark Brown <broonie@kernel.org> Cc: stable@vger.kernel.org
Diffstat (limited to 'drivers/spi/spi-sirf.c')
-rw-r--r--drivers/spi/spi-sirf.c3
1 files changed, 2 insertions, 1 deletions
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);