[src/trunk]: src/sys/dev/imcsmb Identify the device that wsa just attached. ...

[pgoyette <pgoyette%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/7b54d5325366
branches:  trunk
changeset: 359816:7b54d5325366
user:      pgoyette <pgoyette%NetBSD.org@localhost>
date:      Mon Feb 26 05:04:51 2018 +0000

description:
Identify the device that wsa just attached.  Avoids getting strange
message sequence similar to

        imcsmb0 at imc0iic at imcsmb0 not configured

Also, while here, revert to the original FreeBSD wait-for-device-to-
settle code by waiting for 4 intervals of 10ms each, rather than 40
intervals of 1ms.

diffstat:

 sys/dev/imcsmb/imcsmb.c |  6 ++++--
 1 files changed, 4 insertions(+), 2 deletions(-)

diffs (28 lines):

diff -r 9d39efe10f2f -r 7b54d5325366 sys/dev/imcsmb/imcsmb.c
--- a/sys/dev/imcsmb/imcsmb.c   Mon Feb 26 05:01:21 2018 +0000
+++ b/sys/dev/imcsmb/imcsmb.c   Mon Feb 26 05:04:51 2018 +0000
@@ -115,6 +115,8 @@
        struct imcsmb_softc *sc = device_private(self);
        struct imc_attach_args *imca = aux;
 
+       aprint_normal_dev(self, ": SMBus controller\n");
+
        /* Initialize private state */
        sc->sc_dev = self;
        sc->sc_regs = imca->ia_regs;
@@ -344,13 +346,13 @@
         * is idle before issuing a command. We can safely timeout after 35 ms,
         * as this is the maximum time the SMBus spec allows for a transaction.
         */
-       for (i = 40; i != 0; i--) {
+       for (i = 4; i != 0; i--) {
                stat_val = pci_conf_read(sc->sc_pci_chipset_tag,
                    sc->sc_pci_tag, sc->sc_regs->smb_stat);
                if (! (stat_val & IMCSMB_STATUS_BUSY_BIT)) {
                        break;
                }
-               delay(1000);    /* wait 1ms */
+               delay(100);     /* wait 10ms */
        }
 
        if (i == 0) {