diff options
author | Allen Pais <apais@linux.microsoft.com> | 2021-06-14 17:33:12 -0500 |
---|---|---|
committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-08-12 13:22:13 +0200 |
commit | 2a879ff9719fdb75bdedfca029a381105aea6d72 (patch) | |
tree | b69694f17755380d200b8c7e8f27a02862eb2e9e /drivers/tee | |
parent | ad80c25987feb8930e573ff405ea16e391134971 (diff) |
optee: fix tee out of memory failure seen during kexec reboot
commit f25889f93184db8b07a543cc2bbbb9a8fcaf4333 upstream.
The following out of memory errors are seen on kexec reboot
from the optee core.
[ 0.368428] tee_bnxt_fw optee-clnt0: tee_shm_alloc failed
[ 0.368461] tee_bnxt_fw: probe of optee-clnt0 failed with error -22
tee_shm_release() is not invoked on dma shm buffer.
Implement .shutdown() method to handle the release of the buffers
correctly.
More info:
https://github.com/OP-TEE/optee_os/issues/3637
Cc: stable@vger.kernel.org
Signed-off-by: Allen Pais <apais@linux.microsoft.com>
Reviewed-by: Tyler Hicks <tyhicks@linux.microsoft.com>
Reviewed-by: Jens Wiklander <jens.wiklander@linaro.org>
Reviewed-by: Sumit Garg <sumit.garg@linaro.org>
Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/tee')
-rw-r--r-- | drivers/tee/optee/core.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/drivers/tee/optee/core.c b/drivers/tee/optee/core.c index f6d711b07e15..7b17248f1527 100644 --- a/drivers/tee/optee/core.c +++ b/drivers/tee/optee/core.c @@ -573,6 +573,13 @@ static optee_invoke_fn *get_invoke_func(struct device *dev) return ERR_PTR(-EINVAL); } +/* optee_remove - Device Removal Routine + * @pdev: platform device information struct + * + * optee_remove is called by platform subsystem to alert the driver + * that it should release the device + */ + static int optee_remove(struct platform_device *pdev) { struct optee *optee = platform_get_drvdata(pdev); @@ -603,6 +610,18 @@ static int optee_remove(struct platform_device *pdev) return 0; } +/* optee_shutdown - Device Removal Routine + * @pdev: platform device information struct + * + * platform_shutdown is called by the platform subsystem to alert + * the driver that a shutdown, reboot, or kexec is happening and + * device must be disabled. + */ +static void optee_shutdown(struct platform_device *pdev) +{ + optee_disable_shm_cache(platform_get_drvdata(pdev)); +} + static int optee_probe(struct platform_device *pdev) { optee_invoke_fn *invoke_fn; @@ -748,6 +767,7 @@ MODULE_DEVICE_TABLE(of, optee_dt_match); static struct platform_driver optee_driver = { .probe = optee_probe, .remove = optee_remove, + .shutdown = optee_shutdown, .driver = { .name = "optee", .of_match_table = optee_dt_match, |