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| author | gonzo <gonzo@FreeBSD.org> | 2012-12-13 03:35:47 +0000 |
|---|---|---|
| committer | gonzo <gonzo@FreeBSD.org> | 2012-12-13 03:35:47 +0000 |
| commit | 6682c5a493b04594b14b47bef25ea5d5b28da6d6 (patch) | |
| tree | a935c1d613337d12ffe88aa493cedfcbd6929fcf /sys/dev/uart/uart_bus_fdt.c | |
| parent | 9f85b220e0029a457a844c4cf89eb122c5d35f31 (diff) | |
| download | FreeBSD-src-6682c5a493b04594b14b47bef25ea5d5b28da6d6.zip FreeBSD-src-6682c5a493b04594b14b47bef25ea5d5b28da6d6.tar.gz | |
Prevent possible usage of uninitialized pbase variable by checking
return value of fdt_get_range
Diffstat (limited to 'sys/dev/uart/uart_bus_fdt.c')
| -rw-r--r-- | sys/dev/uart/uart_bus_fdt.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/sys/dev/uart/uart_bus_fdt.c b/sys/dev/uart/uart_bus_fdt.c index 8dbbb25..b55329e 100644 --- a/sys/dev/uart/uart_bus_fdt.c +++ b/sys/dev/uart/uart_bus_fdt.c @@ -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)); |
