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gunyah: gh_rm_drv: Add error return if RM device is not ready

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Some driver may probe before RM driver, so we need return probe defer to
let these driver use RM call after RM device is ready.

Change-Id: I65cf5eab7b99ca2a58c32f2d83794a210350fb05
Signed-off-by: Cong Zhang <quic_congzhan@quicinc.com>
This commit is contained in:
Cong Zhang 2022-06-01 16:16:55 +08:00 committed by Gerrit - the friendly Code Review server
parent 7f426d2858
commit 34989b4a03
1 changed files with 6 additions and 0 deletions
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6
drivers/virt/gunyah/gh_rm_core.c
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@ -602,6 +602,12 @@ static int gh_rm_send_request(u32 message_id,
void *send_buff;
int i, ret;
/* Drivers need probe defer
* when do RM call before RM driver initialized
*/
if (gh_rm_msgq_desc == NULL)
return -EPROBE_DEFER;
num_fragments = (req_buff_size + GH_RM_MAX_MSG_SIZE_BYTES - 1) /
GH_RM_MAX_MSG_SIZE_BYTES;