6.4-stable review patch. If anyone has any objections, please let me know.
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From: Ekansh Gupta quic_ekangupt@quicinc.com
commit fe6518d547fc52ba74201018dc9aeb364072ac78 upstream.
Memory is allocated for dynamic loading when audio daemon is trying to attach to audioPD on DSP side. This memory is allocated from reserved CMA memory region and needs ownership assignment to new VMID in order to use it from audioPD.
In the current implementation, arguments are not correctly passed to the scm call which might result in failure of dynamic loading on audioPD. Added changes to pass correct arguments during daemon attach request.
Fixes: 0871561055e6 ("misc: fastrpc: Add support for audiopd") Cc: stable stable@kernel.org Tested-by: Ekansh Gupta quic_ekangupt@quicinc.com Signed-off-by: Ekansh Gupta quic_ekangupt@quicinc.com Signed-off-by: Srinivas Kandagatla srinivas.kandagatla@linaro.org Link: https://lore.kernel.org/r/20230811115643.38578-4-srinivas.kandagatla@linaro.... Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/misc/fastrpc.c | 13 +++++++++---- 1 file changed, 9 insertions(+), 4 deletions(-)
--- a/drivers/misc/fastrpc.c +++ b/drivers/misc/fastrpc.c @@ -1322,13 +1322,18 @@ static int fastrpc_init_create_static_pr return 0; err_invoke: if (fl->cctx->vmcount) { - struct qcom_scm_vmperm perm; + u64 src_perms = 0; + struct qcom_scm_vmperm dst_perms; + u32 i;
- perm.vmid = QCOM_SCM_VMID_HLOS; - perm.perm = QCOM_SCM_PERM_RWX; + for (i = 0; i < fl->cctx->vmcount; i++) + src_perms |= BIT(fl->cctx->vmperms[i].vmid); + + dst_perms.vmid = QCOM_SCM_VMID_HLOS; + dst_perms.perm = QCOM_SCM_PERM_RWX; err = qcom_scm_assign_mem(fl->cctx->remote_heap->phys, (u64)fl->cctx->remote_heap->size, - &fl->cctx->perms, &perm, 1); + &src_perms, &dst_perms, 1); if (err) dev_err(fl->sctx->dev, "Failed to assign memory phys 0x%llx size 0x%llx err %d", fl->cctx->remote_heap->phys, fl->cctx->remote_heap->size, err);