phy: rockchip-inno-usb2: amend sm work to support legacy SoC

This adds amend logic of sm work to compatibly support some legacy SoCs,
because _host_utmi_linestate_ and _host_utmi_hostdisconnect_ GRF status
bits which are required for host sm work were not introduced in these
SoCs.

Change-Id: Ib4f499f592618930ac5016a63b7a530674aa6005
Signed-off-by: Frank Wang <frank.wang@rock-chips.com>

diff --git a/drivers/phy/phy-rockchip-inno-usb2.c b/drivers/phy/phy-rockchip-inno-usb2.c
index 8a6120c0e0864cdfb1caf7eac835fa3087a43905..1471ea222d9c01454bc31694e580c829d3c30cdc 100644 (file)
--- a/drivers/phy/phy-rockchip-inno-usb2.c
+++ b/drivers/phy/phy-rockchip-inno-usb2.c
@@ -916,6 +916,12 @@ static void rockchip_usb2phy_sm_work(struct work_struct *work)
        unsigned int ul_mask, uhd_mask;
        int ret;
 
+       if (!rport->port_cfg->utmi_ls.offset ||
+           !rport->port_cfg->utmi_hstdet.offset) {
+               dev_dbg(&rport->phy->dev, "some property may not be specified\n");
+               return;
+       }
+
        mutex_lock(&rport->mutex);
 
        ret = regmap_read(rphy->grf, rport->port_cfg->utmi_ls.offset, &ul);