korg/linux
0
0
Fork 0
mirror of https://mirrors.bfsu.edu.cn/git/linux.git synced 2024-11-25 05:04:09 +08:00
Code Issues Packages Projects Releases Wiki Activity

spi: spi-ep93xx: remove private data 'current_msg'

Browse Source 
The currently in-flight message can be found from the spi master.
Use that instead and remove the private data pointer.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Chris Packham <chris.packham@alliedtelesis.co.nz>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
H Hartley Sweeten 2017-08-09 08:51:30 +12:00 committed by Mark Brown
parent 4873883101
commit c7a909cf25
1 changed files with 5 additions and 11 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

16
drivers/spi/spi-ep93xx.c
View File

@ -74,7 +74,6 @@
* @mmio: pointer to ioremap()'d registers
* @sspdr_phys: physical address of the SSPDR register
* @wait: wait here until given transfer is completed
* @current_msg: message that is currently processed (or %NULL if none)
* @tx: current byte in transfer to transmit
* @rx: current byte in transfer to receive
* @fifo_level: how full is FIFO (%0..%SPI_FIFO_SIZE - %1). Receiving one
@ -93,7 +92,6 @@ struct ep93xx_spi {
void __iomem *mmio;
unsigned long sspdr_phys;
struct completion wait;
struct spi_message *current_msg;
size_t tx;
size_t rx;
size_t fifo_level;
@ -236,8 +234,7 @@ static void ep93xx_do_read(struct ep93xx_spi *espi, struct spi_transfer *t)
static int ep93xx_spi_read_write(struct spi_master *master)
{
struct ep93xx_spi *espi = spi_master_get_devdata(master);
struct spi_message *msg = espi->current_msg;
struct spi_transfer *t = msg->state;
struct spi_transfer *t = master->cur_msg->state;
/* read as long as RX FIFO has frames in it */
while ((readl(espi->mmio + SSPSR) & SSPSR_RNE)) {
@ -290,7 +287,7 @@ ep93xx_spi_dma_prepare(struct spi_master *master,
enum dma_transfer_direction dir)
{
struct ep93xx_spi *espi = spi_master_get_devdata(master);
struct spi_transfer *t = espi->current_msg->state;
struct spi_transfer *t = master->cur_msg->state;
struct dma_async_tx_descriptor *txd;
enum dma_slave_buswidth buswidth;
struct dma_slave_config conf;
@ -415,13 +412,12 @@ static void ep93xx_spi_dma_callback(void *callback_param)
static void ep93xx_spi_dma_transfer(struct spi_master *master)
{
struct ep93xx_spi *espi = spi_master_get_devdata(master);
struct spi_message *msg = espi->current_msg;
struct dma_async_tx_descriptor *rxd, *txd;
rxd = ep93xx_spi_dma_prepare(master, DMA_DEV_TO_MEM);
if (IS_ERR(rxd)) {
dev_err(&master->dev, "DMA RX failed: %ld\n", PTR_ERR(rxd));
msg->status = PTR_ERR(rxd);
master->cur_msg->status = PTR_ERR(rxd);
return;
}
@ -429,7 +425,7 @@ static void ep93xx_spi_dma_transfer(struct spi_master *master)
if (IS_ERR(txd)) {
ep93xx_spi_dma_finish(master, DMA_DEV_TO_MEM);
dev_err(&master->dev, "DMA TX failed: %ld\n", PTR_ERR(txd));
msg->status = PTR_ERR(txd);
master->cur_msg->status = PTR_ERR(txd);
return;
}
@ -587,9 +583,7 @@ static int ep93xx_spi_transfer_one_message(struct spi_master *master,
msg->status = 0;
msg->actual_length = 0;
espi->current_msg = msg;
ep93xx_spi_process_message(master, msg);
espi->current_msg = NULL;
spi_finalize_current_message(master);
@ -611,7 +605,7 @@ static irqreturn_t ep93xx_spi_interrupt(int irq, void *dev_id)
writel(0, espi->mmio + SSPICR);
dev_warn(&master->dev,
"receive overrun, aborting the message\n");
espi->current_msg->status = -EIO;
master->cur_msg->status = -EIO;
} else {
/*
* Interrupt is either RX (RIS) or TX (TIS). For both cases we