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Subject[Discussion] Uninitialized variable in wiz_mode_select()
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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;

Thanks,
Usama

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