[src/trunk]: src/sys/arch/arm/nvidia Do some more error checking.

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

details:   https://anonhg.NetBSD.org/src/rev/07b642170196
branches:  trunk
changeset: 350072:07b642170196
user:      skrll <skrll%NetBSD.org@localhost>
date:      Tue Jan 03 12:37:08 2017 +0000

description:
Do some more error checking.

PR/51551

diffstat:

 sys/arch/arm/nvidia/tegra_xusb.c |  45 +++++++++++++++++++++++++++++++--------
 1 files changed, 35 insertions(+), 10 deletions(-)

diffs (126 lines):

diff -r 88887513c7cf -r 07b642170196 sys/arch/arm/nvidia/tegra_xusb.c
--- a/sys/arch/arm/nvidia/tegra_xusb.c  Tue Jan 03 11:34:41 2017 +0000
+++ b/sys/arch/arm/nvidia/tegra_xusb.c  Tue Jan 03 12:37:08 2017 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: tegra_xusb.c,v 1.1 2016/09/26 20:05:03 jakllsch Exp $ */
+/* $NetBSD: tegra_xusb.c,v 1.2 2017/01/03 12:37:08 skrll Exp $ */
 
 /*
  * Copyright (c) 2016 Jonathan A. Kollasch
@@ -30,7 +30,7 @@
 #include "opt_tegra.h"
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: tegra_xusb.c,v 1.1 2016/09/26 20:05:03 jakllsch Exp $");
+__KERNEL_RCSID(0, "$NetBSD: tegra_xusb.c,v 1.2 2017/01/03 12:37:08 skrll Exp $");
 
 #include <sys/param.h>
 #include <sys/bus.h>
@@ -109,6 +109,14 @@
        return of_match_compatible(faa->faa_phandle, compatible);
 }
 
+#define tegra_xusb_attach_check(sc, cond, fmt, ...)                    \
+    do {                                                               \
+       if (cond) {                                                     \
+               aprint_error_dev(sc->sc_dev, fmt, ## __VA_ARGS__);      \
+               return;                                                 \
+       }                                                               \
+    } while (0)
+
 static void
 tegra_xusb_attach(device_t parent, device_t self, void *aux)
 {
@@ -206,24 +214,35 @@
        rate = clk_get_rate(clk);
        error = clk_enable(clk); /* XXX set frequency */
        device_printf(sc->sc_dev, "rate %u error %d\n", rate, error);
+       tegra_xusb_attach_check(sc, error, "failed to enable pll_e clock");
 
        clk = fdtbus_clock_get(faa->faa_phandle, "xusb_host_src");
        error = clk_set_parent(clk, pll_p_out0);
+       tegra_xusb_attach_check(sc, error, "failed to set xusb_host_src clock parent");
+       
        rate = clk_get_rate(clk);
        device_printf(sc->sc_dev, "rate %u error %d\n", rate, error);
        error = clk_set_rate(clk, 102000000);
+       tegra_xusb_attach_check(sc, error, "failed to set xusb_host_src clock rate");
+
        rate = clk_get_rate(clk);
        error = clk_enable(clk); /* XXX set frequency */
        device_printf(sc->sc_dev, "rate %u error %d\n", rate, error);
+       tegra_xusb_attach_check(sc, error, "failed to enable xusb_host_src clock");
 
        clk = fdtbus_clock_get(faa->faa_phandle, "xusb_falcon_src");
        error = clk_set_parent(clk, pll_p_out0);
+       tegra_xusb_attach_check(sc, error, "failed to set xusb_falcon_src clock parent");
+
        rate = clk_get_rate(clk);
        device_printf(sc->sc_dev, "rate %u error %d\n", rate, error);
        error = clk_set_rate(clk, 204000000);
+       tegra_xusb_attach_check(sc, error, "failed to set xusb_falcon_src clock rate");
+
        rate = clk_get_rate(clk);
        error = clk_enable(clk);
        device_printf(sc->sc_dev, "rate %u error %d\n", rate, error);
+       tegra_xusb_attach_check(sc, error, "failed to enable xusb_falcon_src clock");
 
        clk = fdtbus_clock_get(faa->faa_phandle, "xusb_host");
        rate = clk_get_rate(clk);
@@ -234,32 +253,35 @@
        rate = clk_get_rate(clk);
        error = clk_enable(clk); /* XXX set frequency */
        device_printf(sc->sc_dev, "xusb_ss rate %u error %d\n", rate, error);
+       tegra_xusb_attach_check(sc, error, "failed to enable xusb_ss clock");
 
        psc->sc_clk_ss_src = fdtbus_clock_get(faa->faa_phandle, "xusb_ss_src");
-       if (psc->sc_clk_ss_src == NULL) {
-               printf("psc->sc_clk_ss_src %p\n", psc->sc_clk_ss_src);
-               Debugger();
-       }
-       error = 0;
+       tegra_xusb_attach_check(sc, psc->sc_clk_ss_src == NULL,
+               "failed to get xusb_ss_src clock");
        rate = clk_get_rate(psc->sc_clk_ss_src);
-       device_printf(sc->sc_dev, "xusb_ss_src rate %u error %d\n", rate,
-           error);
+       device_printf(sc->sc_dev, "xusb_ss_src rate %u\n", rate);
 
        error = clk_set_rate(psc->sc_clk_ss_src, 2000000);
        rate = clk_get_rate(psc->sc_clk_ss_src);
        device_printf(sc->sc_dev, "xusb_ss_src rate %u error %d\n", rate,
            error);
+       tegra_xusb_attach_check(sc, error, "failed to get xusb_ss_src clock rate");
 
        error = clk_set_parent(psc->sc_clk_ss_src, pll_u_480);
+       tegra_xusb_attach_check(sc, error, "failed to set xusb_ss_src clock parent");
+
        rate = clk_get_rate(psc->sc_clk_ss_src);
-       device_printf(sc->sc_dev, "ss_src rate %u error %d\n", rate, error);
+       device_printf(sc->sc_dev, "ss_src rate %u\n", rate);
+       tegra_xusb_attach_check(sc, error, "failed to set xusb_ss_src clock rate");
 
        error = clk_set_rate(psc->sc_clk_ss_src, 120000000);
        rate = clk_get_rate(psc->sc_clk_ss_src);
        device_printf(sc->sc_dev, "ss_src rate %u error %d\n", rate, error);
+       tegra_xusb_attach_check(sc, error, "failed to get xusb_ss_src clock rate");
 
        error = clk_enable(psc->sc_clk_ss_src);
        device_printf(sc->sc_dev, "ss_src rate %u error %d\n", rate, error);
+       tegra_xusb_attach_check(sc, error, "failed to enable xusb_ss_src clock");
 
 #if 0
        clk = fdtbus_clock_get(faa->faa_phandle, "xusb_hs_src");
@@ -270,9 +292,12 @@
 
        clk = fdtbus_clock_get(faa->faa_phandle, "xusb_fs_src");
        error = clk_set_parent(clk, pll_u_48);
+       tegra_xusb_attach_check(sc, error, "failed to set xusb_fs_src clock parent");
+
        rate = clk_get_rate(clk);
        error = clk_enable(clk); /* XXX set frequency */
        device_printf(sc->sc_dev, "rate %u error %d\n", rate, error);
+       tegra_xusb_attach_check(sc, error, "failed to enable xusb_fs_src clock");
 
        rst = fdtbus_reset_get(faa->faa_phandle, "xusb_host");
        fdtbus_reset_deassert(rst);