Applied "spi: pxa2xx: Remove pointer to current SPI message from driver data" to the spi tree

[Mark Brown <broonie@xxxxxxxxxx>]

The patch

   spi: pxa2xx: Remove pointer to current SPI message from driver data

has been applied to the spi tree at

   git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi.git 

All being well this means that it will be integrated into the linux-next
tree (usually sometime in the next 24 hours) and sent to Linus during
the next merge window (or sooner if it is a bug fix), however if
problems are discovered then the patch may be dropped or reverted.  

You may get further e-mails resulting from automated or manual testing
and review of the tree, please engage with people reporting problems and
send followup patches addressing any issues that are reported if needed.

If any updates are required or you are submitting further changes they
should be sent as incremental updates against current git, existing
patches will not be replaced.

Please add any relevant lists and maintainers to the CCs when replying
to this mail.

Thanks,
Mark

>From 4fc0caac065dbf300238997c7d2c212a2b120099 Mon Sep 17 00:00:00 2001
From: Jarkko Nikula <jarkko.nikula@xxxxxxxxxxxxxxx>
Date: Wed, 7 Sep 2016 17:04:06 +0300
Subject: [PATCH] spi: pxa2xx: Remove pointer to current SPI message from
 driver data

There is no need to carry pointer to current SPI message in driver data
because cur_msg in struct spi_master holds it already when driver is using
the message queueing infrastructure from the SPI core.

Signed-off-by: Jarkko Nikula <jarkko.nikula@xxxxxxxxxxxxxxx>
Signed-off-by: Mark Brown <broonie@xxxxxxxxxx>
---
 drivers/spi/spi-pxa2xx-dma.c |  2 +-
 drivers/spi/spi-pxa2xx.c     | 25 +++++++++++--------------
 drivers/spi/spi-pxa2xx.h     |  1 -
 3 files changed, 12 insertions(+), 16 deletions(-)

diff --git a/drivers/spi/spi-pxa2xx-dma.c b/drivers/spi/spi-pxa2xx-dma.c
index 80c8e27a2f73..38efac33da47 100644
--- a/drivers/spi/spi-pxa2xx-dma.c
+++ b/drivers/spi/spi-pxa2xx-dma.c
@@ -23,7 +23,7 @@
 static void pxa2xx_spi_dma_transfer_complete(struct driver_data *drv_data,
 					     bool error)
 {
-	struct spi_message *msg = drv_data->cur_msg;
+	struct spi_message *msg = drv_data->master->cur_msg;
 
 	/*
 	 * It is possible that one CPU is handling ROR interrupt and other
diff --git a/drivers/spi/spi-pxa2xx.c b/drivers/spi/spi-pxa2xx.c
index 0e0d445f4028..e05af2a94d38 100644
--- a/drivers/spi/spi-pxa2xx.c
+++ b/drivers/spi/spi-pxa2xx.c
@@ -316,7 +316,7 @@ static void lpss_ssp_select_cs(struct driver_data *drv_data,
 
 	value = __lpss_ssp_read_priv(drv_data, config->reg_cs_ctrl);
 
-	cs = drv_data->cur_msg->spi->chip_select;
+	cs = drv_data->master->cur_msg->spi->chip_select;
 	cs <<= config->cs_sel_shift;
 	if (cs != (value & config->cs_sel_mask)) {
 		/*
@@ -508,7 +508,7 @@ static int u32_reader(struct driver_data *drv_data)
 
 void *pxa2xx_spi_next_transfer(struct driver_data *drv_data)
 {
-	struct spi_message *msg = drv_data->cur_msg;
+	struct spi_message *msg = drv_data->master->cur_msg;
 	struct spi_transfer *trans = drv_data->cur_transfer;
 
 	/* Move to next transfer */
@@ -529,8 +529,7 @@ static void giveback(struct driver_data *drv_data)
 	struct spi_message *msg;
 	unsigned long timeout;
 
-	msg = drv_data->cur_msg;
-	drv_data->cur_msg = NULL;
+	msg = drv_data->master->cur_msg;
 	drv_data->cur_transfer = NULL;
 
 	last_transfer = list_last_entry(&msg->transfers, struct spi_transfer,
@@ -610,7 +609,7 @@ static void int_error_stop(struct driver_data *drv_data, const char* msg)
 
 	dev_err(&drv_data->pdev->dev, "%s\n", msg);
 
-	drv_data->cur_msg->state = ERROR_STATE;
+	drv_data->master->cur_msg->state = ERROR_STATE;
 	tasklet_schedule(&drv_data->pump_transfers);
 }
 
@@ -623,7 +622,7 @@ static void int_transfer_complete(struct driver_data *drv_data)
 		pxa2xx_spi_write(drv_data, SSTO, 0);
 
 	/* Update total byte transferred return count actual bytes read */
-	drv_data->cur_msg->actual_length += drv_data->len -
+	drv_data->master->cur_msg->actual_length += drv_data->len -
 				(drv_data->rx_end - drv_data->rx);
 
 	/* Transfer delays and chip select release are
@@ -631,7 +630,7 @@ static void int_transfer_complete(struct driver_data *drv_data)
 	 */
 
 	/* Move to next transfer */
-	drv_data->cur_msg->state = pxa2xx_spi_next_transfer(drv_data);
+	drv_data->master->cur_msg->state = pxa2xx_spi_next_transfer(drv_data);
 
 	/* Schedule transfer tasklet */
 	tasklet_schedule(&drv_data->pump_transfers);
@@ -746,7 +745,7 @@ static irqreturn_t ssp_int(int irq, void *dev_id)
 	if (!(status & mask))
 		return IRQ_NONE;
 
-	if (!drv_data->cur_msg) {
+	if (!drv_data->master->cur_msg) {
 
 		pxa2xx_spi_write(drv_data, SSCR0,
 				 pxa2xx_spi_read(drv_data, SSCR0)
@@ -934,7 +933,7 @@ static void pump_transfers(unsigned long data)
 {
 	struct driver_data *drv_data = (struct driver_data *)data;
 	struct spi_master *master = drv_data->master;
-	struct spi_message *message;
+	struct spi_message *message = master->cur_msg;
 	struct spi_transfer *transfer;
 	struct spi_transfer *previous;
 	struct chip_data *chip;
@@ -950,7 +949,6 @@ static void pump_transfers(unsigned long data)
 	int dma_mapped;
 
 	/* Get current state information */
-	message = drv_data->cur_msg;
 	transfer = drv_data->cur_transfer;
 	chip = drv_data->cur_chip;
 
@@ -1146,16 +1144,15 @@ static int pxa2xx_spi_transfer_one_message(struct spi_master *master,
 {
 	struct driver_data *drv_data = spi_master_get_devdata(master);
 
-	drv_data->cur_msg = msg;
 	/* Initial message state*/
-	drv_data->cur_msg->state = START_STATE;
-	drv_data->cur_transfer = list_entry(drv_data->cur_msg->transfers.next,
+	msg->state = START_STATE;
+	drv_data->cur_transfer = list_entry(msg->transfers.next,
 						struct spi_transfer,
 						transfer_list);
 
 	/* prepare to setup the SSP, in pump_transfers, using the per
 	 * chip configuration */
-	drv_data->cur_chip = spi_get_ctldata(drv_data->cur_msg->spi);
+	drv_data->cur_chip = spi_get_ctldata(msg->spi);
 
 	/* Mark as busy and launch transfers */
 	tasklet_schedule(&drv_data->pump_transfers);
diff --git a/drivers/spi/spi-pxa2xx.h b/drivers/spi/spi-pxa2xx.h
index d217ad55cc12..4f858664cee1 100644
--- a/drivers/spi/spi-pxa2xx.h
+++ b/drivers/spi/spi-pxa2xx.h
@@ -53,7 +53,6 @@ struct driver_data {
 	atomic_t dma_running;
 
 	/* Current message transfer state info */
-	struct spi_message *cur_msg;
 	struct spi_transfer *cur_transfer;
 	struct chip_data *cur_chip;
 	size_t len;
-- 
2.8.1

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