Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dledford/rdma

[linux.git] / drivers / gpu / drm / nouveau / nvkm / subdev / i2c / aux.c

diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/i2c/aux.c b/drivers/gpu/drm/nouveau/nvkm/subdev/i2c/aux.c
index d172e42dd2280682d58c3907ed882bae03fa0a2f..4c1f547da463afff3dee772446f92f13b2f4043e 100644 (file)
--- a/drivers/gpu/drm/nouveau/nvkm/subdev/i2c/aux.c
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/i2c/aux.c
@@ -117,6 +117,10 @@ int
 nvkm_i2c_aux_xfer(struct nvkm_i2c_aux *aux, bool retry, u8 type,
                  u32 addr, u8 *data, u8 *size)
 {
+       if (!*size && !aux->func->address_only) {
+               AUX_ERR(aux, "address-only transaction dropped");
+               return -ENOSYS;
+       }
        return aux->func->xfer(aux, retry, type, addr, data, size);
 }