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Merge "spi: spi-msm-geni: Clear the RX fifo if FIFO has data after timeout"

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qctecmdr 2020-11-19 06:55:49 -08:00 • committed by Gerrit - the friendly Code Review server
commit a1702cebeb
1 changed files with 12 additions and 0 deletions
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12
drivers/spi/spi-msm-geni.c
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@ -1384,9 +1384,21 @@ static void handle_fifo_timeout(struct spi_geni_master *mas,
struct spi_transfer *xfer)
{
unsigned long timeout;
u32 rx_fifo_status;
int rx_wc, i;
geni_se_dump_dbg_regs(&mas->spi_rsc, mas->base, mas->ipc);
reinit_completion(&mas->xfer_done);
/* Dummy read the rx fifo for any spurious data*/
if (xfer->rx_buf) {
rx_fifo_status = geni_read_reg(mas->base,
SE_GENI_RX_FIFO_STATUS);
rx_wc = (rx_fifo_status & RX_FIFO_WC_MSK);
for (i = 0; i < rx_wc; i++)
geni_read_reg(mas->base, SE_GENI_RX_FIFOn);
}
geni_cancel_m_cmd(mas->base);
if (mas->cur_xfer_mode == FIFO_MODE)
geni_write_reg(0, mas->base, SE_GENI_TX_WATERMARK_REG);