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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@linux.intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Jarkko Nikula 2016-09-07 17:04:06 +03:00 committed by Mark Brown
parent bffc967e93
commit 4fc0caac06
3 changed files with 12 additions and 16 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/spi/spi-pxa2xx-dma.c
View File

@ -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

25
drivers/spi/spi-pxa2xx.c
View File

@ -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);

1
drivers/spi/spi-pxa2xx.h
View File

@ -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;