off-by: Breno Leitao Signed-off-by: Usama Arif Tested-by: Jon Hunter Acked-by: Jon Hunter Acked-by: Thierry Reding Link: https://patch.msgid.link/20260126-tegra_xfer-v2-1-6d2115e4f387@debian.org Signed-off-by: Mark Brown Signed-off-by: Sasha Levin --- drivers/spi/spi-tegra210-quad.c | 19 +++++++++++++++++-- 1 file changed, 17 insertions(+), 2 deletions(-) diff --git a/drivers/spi/spi-tegra210-quad.c b/drivers/spi/spi-tegra210-quad.c index 7306ad89bc714..b8fabeb403bad 100644 --- a/drivers/spi/spi-tegra210-quad.c +++ b/drivers/spi/spi-tegra210-quad.c @@ -1420,15 +1420,30 @@ static irqreturn_t handle_dma_based_xfer(struct tegra_qspi *tqspi) static irqreturn_t tegra_qspi_isr_thread(int irq, void *context_data) { struct tegra_qspi *tqspi = context_data; + u32 status; + + /* + * Read transfer status to check if interrupt was triggered by transfer + * completion + */ + status = tegra_qspi_readl(tqspi, QSPI_TRANS_STATUS); /* * Occasionally the IRQ thread takes a long time to wake up (usually * when the CPU that it's running on is excessively busy) and we have * already reached the timeout before and cleaned up the timed out * transfer. Avoid any processing in that case and bail out early. + * + * If no transfer is in progress, check if this was a real interrupt + * that the timeout handler already processed, or a spurious one. */ - if (!tqspi->curr_xfer) - return IRQ_NONE; + if (!tqspi->curr_xfer) { + /* Spurious interrupt - transfer not ready */ + if (!(status & QSPI_RDY)) + return IRQ_NONE; + /* Real interrupt, already handled by timeout path */ + return IRQ_HANDLED; + } tqspi->status_reg = tegra_qspi_readl(tqspi, QSPI_FIFO_STATUS); -- 2.51.0[PATCH 5.15 69/75] spi: tegra210-quad: Return IRQ_HANDLED when timeout already processed transferGreg Kroah-Hartman undefinedstable@vger.kernel.org undefined undefined undefined undefined undefined undefined undefined undefined”