From 3bb3e80faf21e432f6e6d89c55fb587c323b8813 Mon Sep 17 00:00:00 2001 From: Sudeep Holla Date: Tue, 1 Sep 2026 14:11:12 +0100 Subject: [PATCH] firmware: arm_ffa: Tear down driver during shutdown The platform core invokes a driver's shutdown callback, rather than its remove callback, while preparing devices for a normal kexec. Without a shutdown callback, the FF-A driver leaves notifications, partition devices, and the RX/TX mapping active before the replacement kernel is booted. Use ffa_remove() for shutdown so the existing cleanup runs before a normal kexec and other orderly system shutdowns. Reported-by: Nat Gurumoorthy Closes: https://lore.kernel.org/all/20260729162731.1383875-1-natg@google.com/ Reported-by: Carol L Soto Closes: https://lore.kernel.org/all/20260818224404.3694580-1-csoto@nvidia.com Reported-by: Maxi Saparov Closes: https://lore.kernel.org/all/20260826222337.73480-1-maxi.saparov@gmail.com Link: https://patch.msgid.link/20260901131112.3437516-1-sudeep.holla@kernel.org Tested-by: Carol L Soto Signed-off-by: Sudeep Holla --- drivers/firmware/arm_ffa/driver.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/firmware/arm_ffa/driver.c b/drivers/firmware/arm_ffa/driver.c index 8654b3365c9b..28abc808fd32 100644 --- a/drivers/firmware/arm_ffa/driver.c +++ b/drivers/firmware/arm_ffa/driver.c @@ -2225,6 +2225,7 @@ static void ffa_remove(struct platform_device *pdev) static struct platform_driver ffa_driver = { .probe = ffa_probe, .remove = ffa_remove, + .shutdown = ffa_remove, .driver = { .name = FFA_PLATFORM_NAME, },