Commit c9e56039 authored by Maciej W. Rozycki's avatar Maciej W. Rozycki Committed by Ralf Baechle

MIPS: ptrace: Also initialize the FP context on individual FCSR writes

Complement commit ac9ad83b ("MIPS: prevent FP context set via ptrace
being discarded") and also initialize the FP context whenever FCSR alone
is written with a PTRACE_POKEUSR request addressing FPC_CSR, rather than
along with the full FPU register set in the case of the PTRACE_SETFPREGS
request.
Signed-off-by: default avatarMaciej W. Rozycki <macro@imgtec.com>
Cc: Paul Burton <paul.burton@imgtec.com>
Cc: James Hogan <james.hogan@imgtec.com>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/14459/Signed-off-by: default avatarRalf Baechle <ralf@linux-mips.org>
parent 8a98495c
...@@ -817,6 +817,7 @@ long arch_ptrace(struct task_struct *child, long request, ...@@ -817,6 +817,7 @@ long arch_ptrace(struct task_struct *child, long request,
break; break;
#endif #endif
case FPC_CSR: case FPC_CSR:
init_fp_ctx(child);
ptrace_setfcr31(child, data); ptrace_setfcr31(child, data);
break; break;
case DSP_BASE ... DSP_BASE + 5: { case DSP_BASE ... DSP_BASE + 5: {
......
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