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Prevent possible usage of uninitialized pbase variable by checking

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return value of fdt_get_range
This commit is contained in:
Oleksandr Tymoshenko 2012-12-13 03:35:47 +00:00
parent b388a69a8d
commit be9914fc31
1 changed files with 3 additions and 1 deletions
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4
sys/dev/uart/uart_bus_fdt.c
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@ -206,8 +206,10 @@ uart_cpu_getdev(int devtype, struct uart_devinfo *di)
err = fdt_regsize(node, &start, &size);
if (err)
return (ENXIO);
err = fdt_get_range(OF_parent(node), 0, &pbase, &psize);
if (err)
pbase = 0;
fdt_get_range(OF_parent(node), 0, &pbase, &psize);
start += pbase;
return (bus_space_map(di->bas.bst, start, size, 0, &di->bas.bsh));