rtc: optee: fix memory leak on driver removal

[ Upstream commit a531350d2fe58f7fc4516e555f22391dee94efd9 ]

Fix a memory leak in case of driver removal.
Free the shared memory used for arguments exchanges between kernel and
OP-TEE RTC PTA.

Fixes: 81c2f059ab90 ("rtc: optee: add RTC driver for OP-TEE RTC PTA")
Signed-off-by: Clément Le Goffic <clement.legoffic@foss.st.com>
Link: https://lore.kernel.org/r/20250715-upstream-optee-rtc-v1-1-e0fdf8aae545@foss.st.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/rtc/rtc-optee.c b/drivers/rtc/rtc-optee.c
index 9f8b5d4a8f6b65527711f36029d04a6135eca562..6b77c122fdc1093c4633c141d84e3bd9987e6458 100644 (file)
--- a/drivers/rtc/rtc-optee.c
+++ b/drivers/rtc/rtc-optee.c
@@ -320,6 +320,7 @@ static int optee_rtc_remove(struct device *dev)
 {
        struct optee_rtc *priv = dev_get_drvdata(dev);
 
+       tee_shm_free(priv->shm);
        tee_client_close_session(priv->ctx, priv->session_id);
        tee_client_close_context(priv->ctx);