[PATCH] meta: optee-client: Generalize and update shutdown rule

[Jan Kiszka <jan.kiszka@siemens.com>]

From: Jan Kiszka <jan.kiszka@siemens.com>

First, naming changed somewhere between kernel 5.10 and 6.1 so that
optee-ta-bc50d971... is now optee-ta-supp-bc50d971...

And then we should account for possibly more devices that need to be
unbound. Use POSIX-compliant shell code for this.

The generic loop allows to drop the explicit unmounting of efivarfs
because the corresponding driver will already get unbound.

Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
---
 .../optee-client/files/debian/tee-supplicant.service           | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/meta/recipes-bsp/optee-client/files/debian/tee-supplicant.service b/meta/recipes-bsp/optee-client/files/debian/tee-supplicant.service
index cc92a5fd..d8b630a4 100644
--- a/meta/recipes-bsp/optee-client/files/debian/tee-supplicant.service
+++ b/meta/recipes-bsp/optee-client/files/debian/tee-supplicant.service
@@ -13,8 +13,7 @@ Type=oneshot
 RemainAfterExit=yes
 # Start if not already started by the initramfs hook
 ExecStart=/bin/sh -c '/usr/bin/pgrep tee-supplicant >/dev/null || /usr/sbin/tee-supplicant -d'
-ExecStop=/bin/sh -c '/usr/bin/findmnt /sys/firmware/efi/efivars >/dev/null && /usr/bin/umount /sys/firmware/efi/efivars || true'
-ExecStop=/bin/sh -c 'echo -n optee-ta-bc50d971-d4c9-42c4-82cb-343fb7f37896 > /sys/bus/tee/drivers/optee-ftpm/unbind || true'
+ExecStop=/bin/sh -c 'for dev in /sys/bus/tee/devices/*; do case "$dev" in *optee-ta-*) basename "$dev" > "$dev"/driver/unbind;; esac done'
 ExecStop=/usr/bin/pkill tee-supplicant
 
 [Install]
-- 
2.35.3