Hi Usama,
On 01/04/21 1:03 pm, Muhammad Usama Anjum wrote:
> Hi,
>
> `mode` remains uninitialized when `lane_phy_type` isn't PHY_TYPE_DP
> or
> PHY_TYPE_QSGMII. I've checked the dtsi (k3-j721e-common-proc-
> board.dts)
> and possible values of `lane_phy_type` are justPHY_TYPE_USB3 and
> PHY_TYPE_PCIE. If this is correct, the mode will remain uninitialized with
> garbage value. `mode` should be initialized to what? It seems like it is highly
> implementation dependent.
>
> /drivers/phy/ti/phy-j721e-wiz.c: 344 in wiz_mode_select()
> 338 for (i = 0; i < num_lanes; i++) {
> 339 if (wiz->lane_phy_type[i] == PHY_TYPE_DP)
> 340 mode = LANE_MODE_GEN1;
> 341 else if (wiz->lane_phy_type[i] == PHY_TYPE_QSGMII)
> 342 mode = LANE_MODE_GEN2;
> 343
>>>> CID 1503592: Uninitialized variables (UNINIT)
>>>> Using uninitialized value "mode" when calling "regmap_field_write".
> 344 ret = regmap_field_write(wiz->p_standard_mode[i], mode);
> 345 if (ret)
> 346 return ret;
> 347 }
> 348
> 349 return 0;
I've sent a follow-up patch fixing this.
http://lor.kernel.org/r/20210331131417.15596-1-kishon@xxxxxx
Thanks
Kishon
