[PATCH V2] pmdomain: tegra: Add support for multi-socket platforms

[Jon Hunter <jonathanh@nvidia.com>]

On multi-socket platforms each socket has its own BPMP that is
registered with the kernel. For such platforms prefix the NUMA ID for
each socket to the BPMP powergate name to ensure there is a unique name
for each power-domain. Note that we only add the NUMA ID for powergates
that return a valid name because an invalid name indicates that the
powergate ID is not supported.

Signed-off-by: Jon Hunter <jonathanh@nvidia.com>
---
Changes since V1:
- Use NUMA ID as a prefix and not a suffix for the powergate name.

 drivers/pmdomain/tegra/powergate-bpmp.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/pmdomain/tegra/powergate-bpmp.c b/drivers/pmdomain/tegra/powergate-bpmp.c
index 8cde4f384846..5e869b0eb96e 100644
--- a/drivers/pmdomain/tegra/powergate-bpmp.c
+++ b/drivers/pmdomain/tegra/powergate-bpmp.c
@@ -137,6 +137,11 @@ static char *tegra_bpmp_powergate_get_name(struct tegra_bpmp *bpmp,
 	if (err < 0 || msg.rx.ret < 0)
 		return NULL;
 
+	if (response.get_name.name[0] != '\0' &&
+	    dev_to_node(bpmp->dev) != NUMA_NO_NODE)
+		return kasprintf(GFP_KERNEL, "%d-%s", dev_to_node(bpmp->dev),
+				 response.get_name.name);
+
 	return kstrdup(response.get_name.name, GFP_KERNEL);
 }
 
-- 
2.43.0