spi: tegra210-quad: use WARN_ON_ONCE instead of WARN_ON for timeouts

[ Upstream commit 41c721fc093938745d116c3a21326a0ee03bb491 ]

Some machines with tegra_qspi_combined_seq_xfer hardware issues generate
excessive kernel warnings, severely polluting the logs:

    dmesg | grep -i "WARNING:.*tegra_qspi_transfer_one_message" | wc -l
    94451

This patch replaces WARN_ON with WARN_ON_ONCE for timeout conditions to
reduce log spam. The subsequent error message still prints on each
occurrence, providing sufficient information about the failure, while
the stack trace is only needed once for debugging purposes.

Signed-off-by: Breno Leitao <leitao@debian.org>
Link: https://patch.msgid.link/20250401-tegra-v2-1-126c293ec047@debian.org
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/spi/spi-tegra210-quad.c b/drivers/spi/spi-tegra210-quad.c
index 5ac5cb885552b80c546fb8b151902de6164a9270..97f3a4d3c31a9a3cedc313c0143cd9e0d81ecb99 100644 (file)
--- a/drivers/spi/spi-tegra210-quad.c
+++ b/drivers/spi/spi-tegra210-quad.c
@@ -1110,7 +1110,7 @@ static int tegra_qspi_combined_seq_xfer(struct tegra_qspi *tqspi,
                                        (&tqspi->xfer_completion,
                                        QSPI_DMA_TIMEOUT);
 
-                       if (WARN_ON(ret == 0)) {
+                       if (WARN_ON_ONCE(ret == 0)) {
                                dev_err(tqspi->dev, "QSPI Transfer failed with timeout: %d\n",
                                        ret);
                                if (tqspi->is_curr_dma_xfer &&