Hello Ryder Lee,
This is a semi-automatic email about new static checker warnings.
The patch a4a5a430b076: "mt76: mt7615: fix TSF configuration" from
Feb 23, 2021, leads to the following Smatch complaint:
drivers/net/wireless/mediatek/mt76/mt7615/usb_sdio.c:74 mt7663_usb_sdio_set_rates()
warn: variable dereferenced before check 'sta' (see line 70)
drivers/net/wireless/mediatek/mt76/mt7615/usb_sdio.c
69 u32 w5, w27, addr, val;
70 u16 idx = sta->vif->mt76.omac_idx;
^^^^^^^^^^^^^^
The patch adds a new dereference
71
72 lockdep_assert_held(&dev->mt76.mutex);
73
74 if (!sta)
^^^
The old code checks for NULL
75 return -EINVAL;
76
regards,
dan carpenter