drm/nouveau/i2c/g94-: return REPLY_M value on reads
This value represents the actual number of bytes recieved on the AUX
channel as the result of a read transaction.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/i2c/auxg94.c b/drivers/gpu/drm/nouveau/nvkm/subdev/i2c/auxg94.c
index dc96afb..ab8cb19 100644
--- a/drivers/gpu/drm/nouveau/nvkm/subdev/i2c/auxg94.c
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/i2c/auxg94.c
@@ -152,6 +152,7 @@ g94_i2c_aux_xfer(struct nvkm_i2c_aux *obj, bool retry,
AUX_TRACE(&aux->base, "rd %08x", xbuf[i / 4]);
}
memcpy(data, xbuf, *size);
+ *size = stat & 0x0000001f;
}
out:
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/i2c/auxgm200.c b/drivers/gpu/drm/nouveau/nvkm/subdev/i2c/auxgm200.c
index 50e79a9..ee091fa 100644
--- a/drivers/gpu/drm/nouveau/nvkm/subdev/i2c/auxgm200.c
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/i2c/auxgm200.c
@@ -152,6 +152,7 @@ gm200_i2c_aux_xfer(struct nvkm_i2c_aux *obj, bool retry,
AUX_TRACE(&aux->base, "rd %08x", xbuf[i / 4]);
}
memcpy(data, xbuf, *size);
+ *size = stat & 0x0000001f;
}
out:
