6.12-stable review patch. If anyone has any objections, please let me know.
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From: Beleswar Padhi b-padhi@ti.com
commit 23532524594c211871054a15c425812a4ac35102 upstream.
The rproc_detach() function invokes __rproc_detach() before rproc_unprepare_device(). The __rproc_detach() function sets the rproc->state to "RPROC_DETACHED".
However, the TI K3 M4 driver erroneously looks for "RPROC_ATTACHED" state in its .unprepare ops to identify IPC-only mode; which leads to resetting the rproc in detach routine.
Therefore, correct the IPC-only mode detection logic to look for "RPROC_DETACHED" in k3_m4_rproc_unprepare() function.
Fixes: ebcf9008a895 ("remoteproc: k3-m4: Add a remoteproc driver for M4F subsystem") Signed-off-by: Beleswar Padhi b-padhi@ti.com Reviewed-by: Hari Nagalla hnagalla@ti.com Reviewed-by: Martyn Welch martyn.welch@collabora.com Cc: stable@vger.kernel.org Link: https://lore.kernel.org/r/20250513054510.3439842-5-b-padhi@ti.com Signed-off-by: Mathieu Poirier mathieu.poirier@linaro.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/remoteproc/ti_k3_m4_remoteproc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/remoteproc/ti_k3_m4_remoteproc.c +++ b/drivers/remoteproc/ti_k3_m4_remoteproc.c @@ -228,7 +228,7 @@ static int k3_m4_rproc_unprepare(struct int ret;
/* If the core is going to be detached do not assert the module reset */ - if (rproc->state == RPROC_ATTACHED) + if (rproc->state == RPROC_DETACHED) return 0;
ret = kproc->ti_sci->ops.dev_ops.put_device(kproc->ti_sci,