[PATCH] spi: axiado: replace usleep_range() with udelay() in IRQ path

[PATCH] spi: axiado: replace usleep_range() with udelay() in IRQ path

[Felix Gu]

ax_spi_fill_tx_fifo() can be called from ax_spi_irq() which is a hard
irq handler. Replace usleep_range(10, 10) with udelay(10) in atomic
context.

Fixes: e75a6b00ad79 ("spi: axiado: Add driver for Axiado SPI DB controller")
Signed-off-by: Felix Gu <ustc.gu@gmail.com>
---
 drivers/spi/spi-axiado.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/spi/spi-axiado.c b/drivers/spi/spi-axiado.c
index 9057a0a8df4a..649f149617ce 100644
--- a/drivers/spi/spi-axiado.c
+++ b/drivers/spi/spi-axiado.c
@@ -201,7 +201,7 @@ static void ax_spi_fill_tx_fifo(struct ax_spi *xspi)
 		 * then spi control did't work thoroughly, add one byte delay
 		 */
 		if (ax_spi_read(xspi, AX_SPI_IVR) & AX_SPI_IVR_TFOV)
-			usleep_range(10, 10);
+			udelay(10);
 		if (xspi->tx_buf)
 			ax_spi_write_b(xspi, AX_SPI_TXFIFO, *xspi->tx_buf++);
 		else

---
base-commit: 7080e32d3f09d8688c4a87d81bdcc71f7f606b16
change-id: 20260428-axiado-2b7e60365e9a

Best regards,
-- 
Felix Gu <ustc.gu@gmail.com>

Re: [PATCH] spi: axiado: replace usleep_range() with udelay() in IRQ path

[Mark Brown]

On Tue, 28 Apr 2026 00:33:04 +0800, Felix Gu wrote:
> spi: axiado: replace usleep_range() with udelay() in IRQ path

Applied to

   https://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi.git for-7.1

Thanks!

[1/1] spi: axiado: replace usleep_range() with udelay() in IRQ path
      https://git.kernel.org/broonie/spi/c/f5c6a272b699

All being well this means that it will be integrated into the linux-next
tree (usually sometime in the next 24 hours) and sent to Linus during
the next merge window (or sooner if it is a bug fix), however if
problems are discovered then the patch may be dropped or reverted.

You may get further e-mails resulting from automated or manual testing
and review of the tree, please engage with people reporting problems and
send followup patches addressing any issues that are reported if needed.

If any updates are required or you are submitting further changes they
should be sent as incremental updates against current git, existing
patches will not be replaced.

Please add any relevant lists and maintainers to the CCs when replying
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Thanks,
Mark