[PATCH 05/18] spi: qup: Place the QUP in run mode before DMA transactions

[Varadarajan Narayanan]

Signed-off-by: Varadarajan Narayanan 
---
 drivers/spi/spi-qup.c | 18 --
 1 file changed, 16 insertions(+), 2 deletions(-)

diff --git a/drivers/spi/spi-qup.c b/drivers/spi/spi-qup.c
index d3ccf53..363bd43 100644
--- a/drivers/spi/spi-qup.c
+++ b/drivers/spi/spi-qup.c
@@ -336,6 +336,14 @@ static int spi_qup_do_dma(struct spi_master *master, 
struct spi_transfer *xfer,
struct spi_qup *qup = spi_master_get_devdata(master);
int ret;
 
+   /* before issuing the descriptors, set the QUP to run */
+   ret = spi_qup_set_state(qup, QUP_STATE_RUN);
+   if (ret) {
+   dev_warn(qup->dev, "%s(%d): cannot set RUN state\n",
+   __func__, __LINE__);
+   return ret;
+   }
+
if (xfer->rx_buf) {
ret = spi_qup_prep_sg(master, xfer, DMA_DEV_TO_MEM,
spi_qup_dma_done, >rxc);
@@ -371,18 +379,24 @@ static int spi_qup_do_pio(struct spi_master *master, 
struct spi_transfer *xfer,
 
ret = spi_qup_set_state(qup, QUP_STATE_RUN);
if (ret) {
-   dev_warn(qup->dev, "cannot set RUN state\n");
+   dev_warn(qup->dev, "%s(%d): cannot set RUN state\n");
return ret;
}
 
ret = spi_qup_set_state(qup, QUP_STATE_PAUSE);
if (ret) {
-   dev_warn(qup->dev, "cannot set PAUSE state\n");
+   dev_warn(qup->dev, "%s(%d): cannot set PAUSE state\n");
return ret;
}
 
spi_qup_fifo_write(qup, xfer);
 
+   ret = spi_qup_set_state(qup, QUP_STATE_RUN);
+   if (ret) {
+   dev_warn(qup->dev, "%s(%d): cannot set RUN state\n");
+   return ret;
+   }
+
if (!wait_for_completion_timeout(>done, timeout))
return -ETIMEDOUT;
 
-- 
QUALCOMM INDIA, on behalf of Qualcomm Innovation Center, Inc. is a member of 
Code Aurora Forum, hosted by The Linux Foundation

[PATCH 05/18] spi: qup: Place the QUP in run mode before DMA transactions

[Varadarajan Narayanan]

Signed-off-by: Varadarajan Narayanan 
---
 drivers/spi/spi-qup.c | 18 --
 1 file changed, 16 insertions(+), 2 deletions(-)

diff --git a/drivers/spi/spi-qup.c b/drivers/spi/spi-qup.c
index d3ccf53..363bd43 100644
--- a/drivers/spi/spi-qup.c
+++ b/drivers/spi/spi-qup.c
@@ -336,6 +336,14 @@ static int spi_qup_do_dma(struct spi_master *master, 
struct spi_transfer *xfer,
struct spi_qup *qup = spi_master_get_devdata(master);
int ret;
 
+   /* before issuing the descriptors, set the QUP to run */
+   ret = spi_qup_set_state(qup, QUP_STATE_RUN);
+   if (ret) {
+   dev_warn(qup->dev, "%s(%d): cannot set RUN state\n",
+   __func__, __LINE__);
+   return ret;
+   }
+
if (xfer->rx_buf) {
ret = spi_qup_prep_sg(master, xfer, DMA_DEV_TO_MEM,
spi_qup_dma_done, >rxc);
@@ -371,18 +379,24 @@ static int spi_qup_do_pio(struct spi_master *master, 
struct spi_transfer *xfer,
 
ret = spi_qup_set_state(qup, QUP_STATE_RUN);
if (ret) {
-   dev_warn(qup->dev, "cannot set RUN state\n");
+   dev_warn(qup->dev, "%s(%d): cannot set RUN state\n");
return ret;
}
 
ret = spi_qup_set_state(qup, QUP_STATE_PAUSE);
if (ret) {
-   dev_warn(qup->dev, "cannot set PAUSE state\n");
+   dev_warn(qup->dev, "%s(%d): cannot set PAUSE state\n");
return ret;
}
 
spi_qup_fifo_write(qup, xfer);
 
+   ret = spi_qup_set_state(qup, QUP_STATE_RUN);
+   if (ret) {
+   dev_warn(qup->dev, "%s(%d): cannot set RUN state\n");
+   return ret;
+   }
+
if (!wait_for_completion_timeout(>done, timeout))
return -ETIMEDOUT;
 
-- 
QUALCOMM INDIA, on behalf of Qualcomm Innovation Center, Inc. is a member of 
Code Aurora Forum, hosted by The Linux Foundation