Hello Minas Harutyunyan,
This is a semi-automatic email about new static checker warnings.
Commit b258e4268850 ("usb: dwc2: host: Fix ISOC flow in DDMA mode")
from Mar 13, 2024, leads to the following Smatch complaint:
drivers/usb/dwc2/hcd_ddma.c:874 dwc2_cmpl_host_isoc_dma_desc()
warn: variable dereferenced before check 'qtd->urb' (see line 870)
drivers/usb/dwc2/hcd_ddma.c
869 u16 frame_desc_idx;
870 struct urb *usb_urb = qtd->urb->priv;
^^^^^^^^^^
The patch adds a dereference
871 u16 remain = 0;
872 int rc = 0;
873
874 if (!qtd->urb)
^^^^^^^^^
The existing check is too late now
875 return -EINVAL;
876
regards,
dan carpenter
