wifi: mt76: mt7915: fallback to non-wed mode if platform_get_resource fails in mt7915...

[ Upstream commit 5f9d5d4fc561e7bd3a18742f1fdb96cab98f1870 ]

mt76 assumes mt7915_mmio_wed_init can fail just after wed driver has
been attached running mtk_wed_device_attach().
Fall back to non-wed mode if platform_get_resource fails in
mt7915_mmio_wed_init routines.

Fixes: eebb70976be5 ("wifi: mt76: mt7915: enable wed for mt7986-wmac chipset")
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/mmio.c b/drivers/net/wireless/mediatek/mt76/mt7915/mmio.c
index fc7ace6..f4ad721 100644 (file)
--- a/drivers/net/wireless/mediatek/mt76/mt7915/mmio.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7915/mmio.c
@@ -742,7 +742,7 @@ int mt7915_mmio_wed_init(struct mt7915_dev *dev, void *pdev_ptr,
 
                res = platform_get_resource(plat_dev, IORESOURCE_MEM, 0);
                if (!res)
-                       return -ENOMEM;
+                       return 0;
 
                wed->wlan.platform_dev = plat_dev;
                wed->wlan.bus_type = MTK_WED_BUS_AXI;