Author: adrian
Date: Tue Oct 18 03:24:17 2011
New Revision: 226490
URL: http://svn.freebsd.org/changeset/base/226490
Log:
Add a WAR from the reference code - clear the PCI error status
upon detach.
Obtained from: Atheros
Modified:
head/sys/dev/ath/if_ath_pci.c
Modified: head/sys/dev/ath/if_ath_pci.c
==============================================================================
--- head/sys/dev/ath/if_ath_pci.c Tue Oct 18 03:17:06 2011
(r226489)
+++ head/sys/dev/ath/if_ath_pci.c Tue Oct 18 03:24:17 2011
(r226490)
@@ -199,6 +199,11 @@ ath_pci_detach(device_t dev)
/* check if device was removed */
sc->sc_invalid = !bus_child_present(dev);
+ /*
+ * Do a config read to clear pre-existing pci error status.
+ */
+ (void) pci_read_config(dev, PCIR_COMMAND, 4);
+
ath_detach(sc);
bus_generic_detach(dev);
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