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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2014-01-13 10:59:05 +0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2014-01-13 10:59:05 +0700 |
| commit | a6da83f98267bc8ee4e34aa899169991eb0ceb93 (patch) | |
| tree | 84c228e0a87475dbdb0f72621c137cce8253131b | |
| parent | 061f49ec2d722f485237870f04544d8bec15a778 (diff) | |
| parent | 10348f5976830e5d8f74e8abb04a9a057a5e8478 (diff) | |
| download | linux-xtensa-master.tar.gz | |
Pull powerpc fix from Ben Herrenschmidt:
"Here's one regression fix for 3.13 that I would appreciate if you
could still pull in. It was an "interesting" one to debug, basically
it's an old bug that got somewhat "exposed" by new code breaking the
boot on PA Semi boards (yes, it does appear that some people are still
using these!)"
* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc:
powerpc: Check return value of instance-to-package OF call
| -rw-r--r-- | arch/powerpc/kernel/prom_init.c | 22 |
1 files changed, 13 insertions, 9 deletions
diff --git a/arch/powerpc/kernel/prom_init.c b/arch/powerpc/kernel/prom_init.c index cb64a6e1dc5186..078145acf7fb86 100644 --- a/arch/powerpc/kernel/prom_init.c +++ b/arch/powerpc/kernel/prom_init.c @@ -1986,19 +1986,23 @@ static void __init prom_init_stdout(void) /* Get the full OF pathname of the stdout device */ memset(path, 0, 256); call_prom("instance-to-path", 3, 1, prom.stdout, path, 255); - stdout_node = call_prom("instance-to-package", 1, 1, prom.stdout); - val = cpu_to_be32(stdout_node); - prom_setprop(prom.chosen, "/chosen", "linux,stdout-package", - &val, sizeof(val)); prom_printf("OF stdout device is: %s\n", of_stdout_device); prom_setprop(prom.chosen, "/chosen", "linux,stdout-path", path, strlen(path) + 1); - /* If it's a display, note it */ - memset(type, 0, sizeof(type)); - prom_getprop(stdout_node, "device_type", type, sizeof(type)); - if (strcmp(type, "display") == 0) - prom_setprop(stdout_node, path, "linux,boot-display", NULL, 0); + /* instance-to-package fails on PA-Semi */ + stdout_node = call_prom("instance-to-package", 1, 1, prom.stdout); + if (stdout_node != PROM_ERROR) { + val = cpu_to_be32(stdout_node); + prom_setprop(prom.chosen, "/chosen", "linux,stdout-package", + &val, sizeof(val)); + + /* If it's a display, note it */ + memset(type, 0, sizeof(type)); + prom_getprop(stdout_node, "device_type", type, sizeof(type)); + if (strcmp(type, "display") == 0) + prom_setprop(stdout_node, path, "linux,boot-display", NULL, 0); + } } static int __init prom_find_machine_type(void) |