use splraise in pccbb

[David Gwynne]

i don't have the hardware to test, but im pretty confident this is
ok.

ok?

Index: pccbb.c
===================================================================
RCS file: /cvs/src/sys/dev/pci/pccbb.c,v
retrieving revision 1.97
diff -u -p -r1.97 pccbb.c
--- pccbb.c     8 Sep 2017 05:36:52 -0000       1.97
+++ pccbb.c     10 Jul 2018 04:09:38 -0000
@@ -959,50 +959,16 @@ pccbbintr_function(struct pccbb_softc *s
 {
        int retval = 0, val;
        struct pccbb_intrhand_list *pil;
-       int s, splchanged;
+       int s;
 
        for (pil = sc->sc_pil; pil != NULL; pil = pil->pil_next) {
-               /*
-                * XXX priority change.  gross.  I use if-else
-                * sentences instead of switch-case sentences in order
-                * to avoid duplicate case value error.  More than one
-                * IPL_XXX may use the same value.  It depends on the
-                * implementation.
-                */
-               splchanged = 1;
-#if 0
-               if (pil->pil_level == IPL_SERIAL) {
-                       s = splserial();
-               } else if (pil->pil_level == IPL_HIGH) {
-#endif
-               if (pil->pil_level == IPL_HIGH) {
-                       s = splhigh();
-               } else if (pil->pil_level == IPL_CLOCK) {
-                       s = splclock();
-               } else if (pil->pil_level == IPL_AUDIO) {
-                       s = splaudio();
-               } else if (pil->pil_level == IPL_VM) {
-                       s = splvm();
-               } else if (pil->pil_level == IPL_TTY) {
-                       s = spltty();
-#if 0
-               } else if (pil->pil_level == IPL_SOFTSERIAL) {
-                       s = splsoftserial();
-#endif
-               } else if (pil->pil_level == IPL_NET) {
-                       s = splnet();
-               } else {
-                       splchanged = 0;
-                       /* XXX: ih lower than IPL_BIO runs w/ IPL_BIO. */
-               }
+               s = splraise(pil->pil_level);
 
                val = (*pil->pil_func)(pil->pil_arg);
                if (val != 0)
                        pil->pil_count.ec_count++;
 
-               if (splchanged != 0) {
-                       splx(s);
-               }
+               splx(s);
 
                if (retval == 0 || val != 0)
                        retval = val;