[src/trunk]: src/sys/dev/acpi Register a null power handler if acpiec fails t...

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

details:   https://anonhg.NetBSD.org/src/rev/abf5da495f2e
branches:  trunk
changeset: 797126:abf5da495f2e
user:      riastradh <riastradh%NetBSD.org@localhost>
date:      Sun Jul 06 15:35:42 2014 +0000

description:
Register a null power handler if acpiec fails to attach.

On one of my machines, there's no _GPE method, so
acpiec_parse_gpe_package fails, and the only function acpiec(4)
serves is to inhibit suspend/resume.

XXX We should really put the power handlers in the cfattach so that
it's not necessary to register a null power handler in every error
branch of every device's attach routine...

diffstat:

 sys/dev/acpi/acpi_ec.c |  24 ++++++++++++++----------
 1 files changed, 14 insertions(+), 10 deletions(-)

diffs (76 lines):

diff -r a273b6975301 -r abf5da495f2e sys/dev/acpi/acpi_ec.c
--- a/sys/dev/acpi/acpi_ec.c    Sun Jul 06 15:35:32 2014 +0000
+++ b/sys/dev/acpi/acpi_ec.c    Sun Jul 06 15:35:42 2014 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: acpi_ec.c,v 1.72 2013/10/16 17:31:01 christos Exp $    */
+/*     $NetBSD: acpi_ec.c,v 1.73 2014/07/06 15:35:42 riastradh Exp $   */
 
 /*-
  * Copyright (c) 2007 Joerg Sonnenberger <joerg%NetBSD.org@localhost>.
@@ -59,7 +59,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: acpi_ec.c,v 1.72 2013/10/16 17:31:01 christos Exp $");
+__KERNEL_RCSID(0, "$NetBSD: acpi_ec.c,v 1.73 2014/07/06 15:35:42 riastradh Exp $");
 
 #include <sys/param.h>
 #include <sys/callout.h>
@@ -265,38 +265,40 @@
        if (ec_singleton != NULL) {
                aprint_naive(": using %s\n", device_xname(ec_singleton));
                aprint_normal(": using %s\n", device_xname(ec_singleton));
-               if (!pmf_device_register(self, NULL, NULL))
-                       aprint_error_dev(self, "couldn't establish power handler\n");
-               return;
+               goto fail0;
        }
 
        if (!acpiec_parse_gpe_package(self, aa->aa_node->ad_handle,
                                      &gpe_handle, &gpebit))
-               return;
+               goto fail0;
 
        rv = acpi_resource_parse(self, aa->aa_node->ad_handle, "_CRS",
            &ec_res, &acpi_resource_parse_ops_default);
        if (rv != AE_OK) {
                aprint_error_dev(self, "resource parsing failed: %s\n",
                    AcpiFormatException(rv));
-               return;
+               goto fail0;
        }
 
        if ((io0 = acpi_res_io(&ec_res, 0)) == NULL) {
                aprint_error_dev(self, "no data register resource\n");
-               goto free_res;
+               goto fail1;
        }
        if ((io1 = acpi_res_io(&ec_res, 1)) == NULL) {
                aprint_error_dev(self, "no CSR register resource\n");
-               goto free_res;
+               goto fail1;
        }
 
        acpiec_common_attach(parent, self, aa->aa_node->ad_handle,
            aa->aa_iot, io1->ar_base, aa->aa_iot, io0->ar_base,
            gpe_handle, gpebit);
 
-free_res:
        acpi_resource_cleanup(&ec_res);
+       return;
+
+fail1: acpi_resource_cleanup(&ec_res);
+fail0: if (!pmf_device_register(self, NULL, NULL))
+               aprint_error_dev(self, "couldn't establish power handler\n");
 }
 
 static void
@@ -395,6 +397,8 @@
        bus_space_unmap(sc->sc_csr_st, sc->sc_csr_sh, 1);
 post_data_map:
        bus_space_unmap(sc->sc_data_st, sc->sc_data_sh, 1);
+       if (!pmf_device_register(self, NULL, NULL))
+               aprint_error_dev(self, "couldn't establish power handler\n");
 }
 
 static bool