This is a note to let you know that I've just added the patch titled
spi: stm32: Don't warn about spurious interrupts
to the 5.15-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
spi-stm32-don-t-warn-about-spurious-interrupts.patch
and it can be found in the queue-5.15 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit f394603d300fefff296e9b9fd27e49bc40dee91a
Author: Uwe Kleine-König <u.kleine-koenig@xxxxxxxxxxxxxx>
Date: Tue May 21 12:52:42 2024 +0200
spi: stm32: Don't warn about spurious interrupts
[ Upstream commit 95d7c452a26564ef0c427f2806761b857106d8c4 ]
The dev_warn to notify about a spurious interrupt was introduced with
the reasoning that these are unexpected. However spurious interrupts
tend to trigger continously and the error message on the serial console
prevents that the core's detection of spurious interrupts kicks in
(which disables the irq) and just floods the console.
Fixes: c64e7efe46b7 ("spi: stm32: make spurious and overrun interrupts visible")
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@xxxxxxxxxxxxxx>
Link: https://msgid.link/r/20240521105241.62400-2-u.kleine-koenig@xxxxxxxxxxxxxx
Signed-off-by: Mark Brown <broonie@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/spi/spi-stm32.c b/drivers/spi/spi-stm32.c
index 191baa6e45c08..e8d21c93ed7ef 100644
--- a/drivers/spi/spi-stm32.c
+++ b/drivers/spi/spi-stm32.c
@@ -884,7 +884,7 @@ static irqreturn_t stm32h7_spi_irq_thread(int irq, void *dev_id)
mask |= STM32H7_SPI_SR_TXP | STM32H7_SPI_SR_RXP;
if (!(sr & mask)) {
- dev_warn(spi->dev, "spurious IT (sr=0x%08x, ier=0x%08x)\n",
+ dev_vdbg(spi->dev, "spurious IT (sr=0x%08x, ier=0x%08x)\n",
sr, ier);
spin_unlock_irqrestore(&spi->lock, flags);
return IRQ_NONE;
