Hello Mathieu, On 8/30/24 11:51, Arnaud Pouliquen wrote: > Add support for releasing remote processor firmware through > the Trusted Execution Environment (TEE) interface. > > The tee_rproc_release_fw() function is called in the following cases: > > - An error occurs in rproc_start() between the loading of the segments and > the start of the remote processor. > - When rproc_release_fw is called on error or after stopping the remote > processor. > > Signed-off-by: Arnaud Pouliquen <arnaud.pouliquen@xxxxxxxxxxx> > --- > drivers/remoteproc/remoteproc_core.c | 10 ++++++++-- > 1 file changed, 8 insertions(+), 2 deletions(-) > > diff --git a/drivers/remoteproc/remoteproc_core.c b/drivers/remoteproc/remoteproc_core.c > index 7694817f25d4..32052dedc149 100644 > --- a/drivers/remoteproc/remoteproc_core.c > +++ b/drivers/remoteproc/remoteproc_core.c > @@ -29,6 +29,7 @@ > #include <linux/debugfs.h> > #include <linux/rculist.h> > #include <linux/remoteproc.h> > +#include <linux/remoteproc_tee.h> > #include <linux/iommu.h> > #include <linux/idr.h> > #include <linux/elf.h> > @@ -1258,6 +1259,9 @@ static int rproc_alloc_registered_carveouts(struct rproc *rproc) > > static void rproc_release_fw(struct rproc *rproc) > { > + if (rproc->state == RPROC_OFFLINE && rproc->tee_interface) > + tee_rproc_release_fw(rproc); I'm requesting you expertise to fix an issue I'm facing during my test preparing the V10. My issue is that here, we can call the tee_rproc_release_fw() function, defined in remoteproc_tee built as a remoteproc_tee.ko module. I tried to use the IS_ENABLED and IS_REACHABLE macros in remoteproc_tee.h, but without success: - use IS_ENABLED() results in a link error: "undefined reference to tee_rproc_release_fw." - use IS_REACHABLE() returns false and remoteproc_core calls the inline tee_rproc_release_fw function that just call WARN_ON(1). To solve the issue, I can see three alternatives: 1) Modify Kconfig and remoteproc_tee.c to support only built-in. 2) Use symbol_get/symbol_put. 3) Define a new rproc_ops->release_fw operation that will be initialized to tee_rproc_release_fw.