Hello Marc Zyngier,
This is a semi-automatic email about new static checker warnings.
The patch fe17a42e704a: "irqdomain: Let irq_domain_mapping display
hierarchical domains" from May 12, 2017, leads to the following
Smatch complaint:
kernel/irq/irqdomain.c:772 virq_debug_show_one()
warn: variable dereferenced before check 'data' (see line 758)
kernel/irq/irqdomain.c
757 while (domain) {
758 unsigned int irq = data->irq;
^^^^^^^^^
Dereference.
759 unsigned long hwirq = data->hwirq;
760 struct irq_chip *chip;
761 bool direct;
762
763 if (data == &desc->irq_data)
764 seq_printf(m, "%5d ", irq);
765 else
766 seq_printf(m, "%5d+ ", irq);
767 seq_printf(m, "0x%05lx ", hwirq);
768
769 chip = irq_data_get_irq_chip(data);
770 seq_printf(m, "%-15s ", (chip && chip->name) ? chip->name : "none");
771
772 seq_printf(m, data ? "0x%p " : " %p ",
^^^^
Too late to check.
773 irq_data_get_irq_chip_data(data));
774
regards,
dan carpenter
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