[PATCH] spi: pxa2xx_spi.c restore DRCMR on resume.

[PATCH] spi: pxa2xx_spi.c restore DRCMR on resume.

[Daniel Ribeiro]

If DMA is enabled, any spi_sync call after suspend/resume would block forever,
because DRCMR is lost on suspend. This patch restores DRCMR to the same values
set by probe.

Signed-off-by: Daniel Ribeiro <drwyrm@gmail.com>

---
 drivers/spi/pxa2xx_spi.c |    7 +++++++
 1 files changed, 7 insertions(+), 0 deletions(-)

diff --git a/drivers/spi/pxa2xx_spi.c b/drivers/spi/pxa2xx_spi.c
index c1688c7..79d7341 100644
--- a/drivers/spi/pxa2xx_spi.c
+++ b/drivers/spi/pxa2xx_spi.c
@@ -1700,6 +1700,13 @@ static int pxa2xx_spi_resume(struct platform_device *pdev)
 	struct ssp_device *ssp = drv_data->ssp;
 	int status = 0;
 
+	if (drv_data->rx_channel != -1)
+		DRCMR(drv_data->ssp->drcmr_rx) =
+			DRCMR_MAPVLD | drv_data->rx_channel;
+	if (drv_data->tx_channel != -1)
+		DRCMR(drv_data->ssp->drcmr_tx) =
+			DRCMR_MAPVLD | drv_data->tx_channel;
+
 	/* Enable the SSP clock */
 	clk_enable(ssp->clk);
 
-- 
tg: (577c9c4..) spi/pxa2xx_spi-fix-dma-resume (depends on: master)
total: 0 errors, 0 warnings, 13 lines checked

pxa2xx_spi-fix-dma-resume.patch has no obvious style problems and is ready for submission.