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spi: tegra210-quad: Protect curr_xfer clearing in tegra_qspi_non_combined_seq_xfer

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Protect the curr_xfer clearing in tegra_qspi_non_combined_seq_xfer()
with the spinlock to prevent a race with the interrupt handler that
reads this field to check if a transfer is in progress.

Fixes: b4e002d8a7 ("spi: tegra210-quad: Fix timeout handling")
Signed-off-by: Breno Leitao <leitao@debian.org>
Tested-by: Jon Hunter <jonathanh@nvidia.com>
Acked-by: Jon Hunter <jonathanh@nvidia.com>
Acked-by: Thierry Reding <treding@nvidia.com>
Link: https://patch.msgid.link/20260126-tegra_xfer-v2-5-6d2115e4f387@debian.org
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Breno Leitao 2026-01-26 09:50:30 -08:00 committed by Mark Brown
parent bf4528ab28
commit 6d7723e816
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GPG Key ID: 24D68B725D5487D0
1 changed files with 3 additions and 0 deletions
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3
drivers/spi/spi-tegra210-quad.c
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@ -1288,6 +1288,7 @@ static int tegra_qspi_non_combined_seq_xfer(struct tegra_qspi *tqspi,
struct spi_transfer *transfer;
bool is_first_msg = true;
int ret = 0, val = 0;
unsigned long flags;
msg->status = 0;
msg->actual_length = 0;
@ -1368,7 +1369,9 @@ static int tegra_qspi_non_combined_seq_xfer(struct tegra_qspi *tqspi,
msg->actual_length += xfer->len + dummy_bytes;
complete_xfer:
spin_lock_irqsave(&tqspi->lock, flags);
tqspi->curr_xfer = NULL;
spin_unlock_irqrestore(&tqspi->lock, flags);
if (ret < 0) {
tegra_qspi_transfer_end(spi);