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spi: Fix for v6.16

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One fix here from Thierry, fixing crashes caused by attempting to do
 cache sync operations on uncached memory on Tegra platforms.
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Merge tag 'spi-fix-v6.16-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi

Pull spi fix from Mark Brown:
 "One fix here from Thierry, fixing crashes caused by attempting to do
  cache sync operations on uncached memory on Tegra platforms"

* tag 'spi-fix-v6.16-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi:
  spi: tegra210-qspi: Remove cache operations
This commit is contained in:
Linus Torvalds 2025-06-19 17:46:08 -07:00
commit 41687a5c6f
1 changed files with 0 additions and 14 deletions
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14
drivers/spi/spi-tegra210-quad.c
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@ -407,9 +407,6 @@ tegra_qspi_read_rx_fifo_to_client_rxbuf(struct tegra_qspi *tqspi, struct spi_tra
static void
tegra_qspi_copy_client_txbuf_to_qspi_txbuf(struct tegra_qspi *tqspi, struct spi_transfer *t)
{
dma_sync_single_for_cpu(tqspi->dev, tqspi->tx_dma_phys,
tqspi->dma_buf_size, DMA_TO_DEVICE);
/*
* In packed mode, each word in FIFO may contain multiple packets
* based on bits per word. So all bytes in each FIFO word are valid.
@ -442,17 +439,11 @@ tegra_qspi_copy_client_txbuf_to_qspi_txbuf(struct tegra_qspi *tqspi, struct spi_
tqspi->cur_tx_pos += write_bytes;
}
dma_sync_single_for_device(tqspi->dev, tqspi->tx_dma_phys,
tqspi->dma_buf_size, DMA_TO_DEVICE);
}
static void
tegra_qspi_copy_qspi_rxbuf_to_client_rxbuf(struct tegra_qspi *tqspi, struct spi_transfer *t)
{
dma_sync_single_for_cpu(tqspi->dev, tqspi->rx_dma_phys,
tqspi->dma_buf_size, DMA_FROM_DEVICE);
if (tqspi->is_packed) {
tqspi->cur_rx_pos += tqspi->curr_dma_words * tqspi->bytes_per_word;
} else {
@ -478,9 +469,6 @@ tegra_qspi_copy_qspi_rxbuf_to_client_rxbuf(struct tegra_qspi *tqspi, struct spi_
tqspi->cur_rx_pos += read_bytes;
}
dma_sync_single_for_device(tqspi->dev, tqspi->rx_dma_phys,
tqspi->dma_buf_size, DMA_FROM_DEVICE);
}
static void tegra_qspi_dma_complete(void *args)
@ -701,8 +689,6 @@ static int tegra_qspi_start_dma_based_transfer(struct tegra_qspi *tqspi, struct
return ret;
}
dma_sync_single_for_device(tqspi->dev, tqspi->rx_dma_phys,
tqspi->dma_buf_size, DMA_FROM_DEVICE);
ret = tegra_qspi_start_rx_dma(tqspi, t, len);
if (ret < 0) {
dev_err(tqspi->dev, "failed to start RX DMA: %d\n", ret);