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charset="utf-8" I3C allow devices early terminate data transfer. So set "actual_len" to indicate how much data get by i3c_priv_xfer. Signed-off-by: Frank Li Reviewed-by: Miquel Raynal --- drivers/i3c/master/svc-i3c-master.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/drivers/i3c/master/svc-i3c-master.c b/drivers/i3c/master/svc-i= 3c-master.c index be742e6734e39..9dc12f9936a27 100644 --- a/drivers/i3c/master/svc-i3c-master.c +++ b/drivers/i3c/master/svc-i3c-master.c @@ -138,6 +138,7 @@ struct svc_i3c_cmd { const void *out; unsigned int len; unsigned int actual_len; + struct i3c_priv_xfer *xfer; bool continued; }; =20 @@ -1056,6 +1057,7 @@ static int svc_i3c_master_xfer(struct svc_i3c_master = *master, =20 if (readl(master->regs + SVC_I3C_MERRWARN) & SVC_I3C_MERRWARN_NACK) { ret =3D -ENXIO; + *actual_len =3D 0; goto emit_stop; } =20 @@ -1073,6 +1075,7 @@ static int svc_i3c_master_xfer(struct svc_i3c_master = *master, */ if (SVC_I3C_MSTATUS_IBIWON(reg)) { ret =3D -ENXIO; + *actual_len =3D 0; goto emit_stop; } =20 @@ -1168,6 +1171,10 @@ static void svc_i3c_master_start_xfer_locked(struct = svc_i3c_master *master) cmd->addr, cmd->in, cmd->out, cmd->len, &cmd->actual_len, cmd->continued); + /* cmd->xfer is NULL if I2C or CCC transfer */ + if (cmd->xfer) + cmd->xfer->actual_len =3D cmd->actual_len; + if (ret) break; } @@ -1355,6 +1362,7 @@ static int svc_i3c_master_priv_xfers(struct i3c_dev_d= esc *dev, for (i =3D 0; i < nxfers; i++) { struct svc_i3c_cmd *cmd =3D &xfer->cmds[i]; =20 + cmd->xfer =3D &xfers[i]; cmd->addr =3D master->addrs[data->index]; cmd->rnw =3D xfers[i].rnw; cmd->in =3D xfers[i].rnw ? xfers[i].data.in : NULL; --=20 2.34.1