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| author | Russell King <rmk@dyn-67.arm.linux.org.uk> | 2008-05-10 02:24:09 +0400 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2008-05-10 02:24:09 +0400 |
| commit | 1f2ee6496b1f71e9d5aa2448745e65fbafdc3bd5 (patch) | |
| tree | 3f143311afca5e316afd06c2fc4f7d73b19cdcf0 /arch/sparc/kernel/process.c | |
| parent | 5bf6c6e30d8b71d092e8830208e182d84b907fcd (diff) | |
| parent | da109897a142dd017172c0ce7abf0be8646f7109 (diff) | |
| download | linux-1f2ee6496b1f71e9d5aa2448745e65fbafdc3bd5.tar.xz | |
Merge branch 'for-rmk' of git://git.kernel.org/pub/scm/linux/kernel/git/nico/orion into fixes
Diffstat (limited to 'arch/sparc/kernel/process.c')
| -rw-r--r-- | arch/sparc/kernel/process.c | 20 |
1 files changed, 16 insertions, 4 deletions
diff --git a/arch/sparc/kernel/process.c b/arch/sparc/kernel/process.c index e7f35198ae34..36431f377dee 100644 --- a/arch/sparc/kernel/process.c +++ b/arch/sparc/kernel/process.c @@ -419,14 +419,26 @@ asmlinkage int sparc_do_fork(unsigned long clone_flags, unsigned long stack_size) { unsigned long parent_tid_ptr, child_tid_ptr; + unsigned long orig_i1 = regs->u_regs[UREG_I1]; + long ret; parent_tid_ptr = regs->u_regs[UREG_I2]; child_tid_ptr = regs->u_regs[UREG_I4]; - return do_fork(clone_flags, stack_start, - regs, stack_size, - (int __user *) parent_tid_ptr, - (int __user *) child_tid_ptr); + ret = do_fork(clone_flags, stack_start, + regs, stack_size, + (int __user *) parent_tid_ptr, + (int __user *) child_tid_ptr); + + /* If we get an error and potentially restart the system + * call, we're screwed because copy_thread() clobbered + * the parent's %o1. So detect that case and restore it + * here. + */ + if ((unsigned long)ret >= -ERESTART_RESTARTBLOCK) + regs->u_regs[UREG_I1] = orig_i1; + + return ret; } /* Copy a Sparc thread. The fork() return value conventions |