Author: cem
Date: Wed Sep 13 16:23:59 2017
New Revision: 323549
URL: https://svnweb.freebsd.org/changeset/base/323549
Log:
intpm(4): Do not attach if io_res can not be allocated
Attempts to use the driver without an io_res result in immediate panic.
Sponsored by: Dell EMC Isilon
Modified:
head/sys/dev/intpm/intpm.c
Modified: head/sys/dev/intpm/intpm.c
==============================================================================
--- head/sys/dev/intpm/intpm.c Wed Sep 13 16:21:11 2017 (r323548)
+++ head/sys/dev/intpm/intpm.c Wed Sep 13 16:23:59 2017 (r323549)
@@ -191,6 +191,10 @@ sb8xx_attach(device_t dev)
}
sc->io_res = bus_alloc_resource_any(dev, SYS_RES_IOPORT, &sc->io_rid,
RF_ACTIVE);
+ if (sc->io_res == NULL) {
+ device_printf(dev, "Could not allocate I/O space\n");
+ return (ENXIO);
+ }
sc->poll = 1;
return (0);
}
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