selftests/eeh: Skip ahci adapters

The ahci driver doesn't support error recovery, and if your root
filesystem is attached to it the eeh-basic.sh test will likely kill
your machine.

So skip any device we see using the ahci driver.

Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20200326061144.2006522-1-mpe@ellerman.id.au

diff --git a/tools/testing/selftests/powerpc/eeh/eeh-basic.sh b/tools/testing/selftests/powerpc/eeh/eeh-basic.sh
index f988d2f..8a8d0f4 100755 (executable)
--- a/tools/testing/selftests/powerpc/eeh/eeh-basic.sh
+++ b/tools/testing/selftests/powerpc/eeh/eeh-basic.sh
@@ -41,6 +41,11 @@ for dev in `ls -1 /sys/bus/pci/devices/ | grep '\.0$'` ; do
                continue;
        fi
 
+       if [ "ahci" = "$(basename $(realpath /sys/bus/pci/devices/$dev/driver))" ] ; then
+               echo "$dev, Skipped: ahci doesn't support recovery"
+               continue
+       fi
+
        # Don't inject errosr into an already-frozen PE. This happens with
        # PEs that contain multiple PCI devices (e.g. multi-function cards)
        # and injecting new errors during the recovery process will probably