[PATCH 2/2] firmware: tee_bnxt: implement shutdown method to handle kexec reboots
From: Allen Pais <hidden>
Date: 2021-02-17 09:29:04
Also in:
lkml, op-tee
Subsystem:
broadcom bnxt_en 50 gigabit ethernet driver, broadcom nvram driver, the rest · Maintainers:
Michael Chan, Pavan Chebbi, Rafał Miłecki, Linus Torvalds
From: Allen Pais <redacted> On kexec reboot the firmware driver fails to deallocate shm memory leading to a memory leak. Implement .shutdown() method to handle kexec reboots and to release shm buffers correctly. Signed-off-by: Allen Pais <redacted> --- drivers/firmware/broadcom/tee_bnxt_fw.c | 9 +++++++++ 1 file changed, 9 insertions(+)
diff --git a/drivers/firmware/broadcom/tee_bnxt_fw.c b/drivers/firmware/broadcom/tee_bnxt_fw.c
index ed10da5313e8..4c62e044a99f 100644
--- a/drivers/firmware/broadcom/tee_bnxt_fw.c
+++ b/drivers/firmware/broadcom/tee_bnxt_fw.c@@ -242,6 +242,14 @@ static int tee_bnxt_fw_remove(struct device *dev) return 0; } +static void tee_bnxt_fw_shutdown(struct device *dev) +{ + tee_shm_free(pvt_data.fw_shm_pool); + tee_client_close_session(pvt_data.ctx, pvt_data.session_id); + tee_client_close_context(pvt_data.ctx); + pvt_data.ctx = NULL; +} + static const struct tee_client_device_id tee_bnxt_fw_id_table[] = { {UUID_INIT(0x6272636D, 0x2019, 0x0716, 0x42, 0x43, 0x4D, 0x5F, 0x53, 0x43, 0x48, 0x49)},
@@ -257,6 +265,7 @@ static struct tee_client_driver tee_bnxt_fw_driver = { .bus = &tee_bus_type, .probe = tee_bnxt_fw_probe, .remove = tee_bnxt_fw_remove, + .shutdown = tee_bnxt_fw_shutdown, }, };
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2.25.1