Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 32c64261 authored by Geert Uytterhoeven's avatar Geert Uytterhoeven Committed by Mark Brown
Browse files

spi: rspi: Do not call rspi_receive_init() for TX-only 



Since commit 8449fd76 ("spi: rspi: Merge
rspi_send_pio() and rspi_receive_pio()"), rspi_receive_init() is called
for transmit-only transfers too, while this is not needed.
Only call rspi_receive_init() when receiving, to preserve behavior on
RSPI on SH.

Signed-off-by: default avatarGeert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: default avatarMark Brown <broonie@linaro.org>
parent 5f684c34

drivers/spi/spi-rspi.c

+4 −4
Original line number Original line Diff line number Diff line
@@ -726,13 +726,13 @@ static int rspi_transfer_out_in(struct rspi_data *rspi, 
	u8 *rx_buf = xfer->rx_buf;

	u8 *rx_buf = xfer->rx_buf;

	u8 spcr, data;

	u8 spcr, data;





	rspi_receive_init(rspi);



	spcr = rspi_read8(rspi, RSPI_SPCR);

	spcr = rspi_read8(rspi, RSPI_SPCR);

	if (rx_buf)

	if (rx_buf) {

		rspi_receive_init(rspi);

		spcr &= ~SPCR_TXMD;

		spcr &= ~SPCR_TXMD;

	else

	} else {

		spcr |= SPCR_TXMD;

		spcr |= SPCR_TXMD;

	}

	rspi_write8(rspi, spcr, RSPI_SPCR);

	rspi_write8(rspi, spcr, RSPI_SPCR);





	while (remain > 0) {

	while (remain > 0) {