[PATCH] spi: core: Abort active target transfer on controller suspend

[Praveen Talari]

When an SPI controller operating in target mode has a transfer in
progress at the time of system suspend, the suspend path proceeds
without aborting the ongoing transfer. This can leave the hardware in
an inconsistent state, potentially causing the system to hang or fail
to resume cleanly.

Fix this by invoking the controller's target_abort callback from
spi_controller_suspend() when the controller is in target mode and the
callback is registered. This ensures any active target transfer is
cleanly terminated before the controller is suspended.

Signed-off-by: Praveen Talari <praveen.talari@xxxxxxxxxxxxxxxx>
---
 drivers/spi/spi.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c
index 76e3563c523f..2a96921ca55b 100644
--- a/drivers/spi/spi.c
+++ b/drivers/spi/spi.c
@@ -3667,6 +3667,9 @@ int spi_controller_suspend(struct spi_controller *ctlr)
 {
 	int ret = 0;
 
+	if (spi_controller_is_target(ctlr) && ctlr->target_abort)
+		ctlr->target_abort(ctlr);
+
 	/* Basically no-ops for non-queued controllers */
 	if (ctlr->queued) {
 		ret = spi_stop_queue(ctlr);

---
base-commit: b99ae45861eccff1e1d8c7b05a13650be805d437
change-id: 20260605-abort_active_transfer_duirng_s2r-ce4e79896e7a

Best regards,
--  
Praveen Talari <praveen.talari@xxxxxxxxxxxxxxxx>