From 608a1b186f8d1413fdc6022a84e551afa5b49440 Mon Sep 17 00:00:00 2001
From: Helge Deller <deller@gmx.de>
Date: Fri, 18 Aug 2023 22:48:04 +0200
Subject: [PATCH] parisc: Fix /proc/cpuinfo output for lscpu
commit 9f5ba4b3e1b3c123eeca5d2d09161e8720048b5c upstream.
The lscpu command is broken since commit cab56b51ec0e ("parisc: Fix
device names in /proc/iomem") added the PA pathname to all PA
devices, includig the CPUs.
lscpu parses /proc/cpuinfo and now believes it found different CPU
types since every CPU is listed with an unique identifier (PA
pathname).
Fix this problem by simply dropping the PA pathname when listing the
CPUs in /proc/cpuinfo. There is no need to show the pathname in this
procfs file.
Fixes: cab56b51ec0e ("parisc: Fix device names in /proc/iomem")
Signed-off-by: Helge Deller <deller@gmx.de>
Cc: <stable@vger.kernel.org> # v4.9+
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
arch/parisc/kernel/processor.c | 13 ++++++++++---
1 file changed, 10 insertions(+), 3 deletions(-)
diff --git a/arch/parisc/kernel/processor.c b/arch/parisc/kernel/processor.c
index 0b0194150b68..538939499d73 100644
--- a/arch/parisc/kernel/processor.c
+++ b/arch/parisc/kernel/processor.c
@@ -377,10 +377,18 @@ int
show_cpuinfo (struct seq_file *m, void *v)
{
unsigned long cpu;
+ char cpu_name[60], *p;
+
+ /* strip PA path from CPU name to not confuse lscpu */
+ strlcpy(cpu_name, per_cpu(cpu_data, 0).dev->name, sizeof(cpu_name));
+ p = strrchr(cpu_name, '[');
+ if (p)
+ *(--p) = 0;
for_each_online_cpu(cpu) {
- const struct cpuinfo_parisc *cpuinfo = &per_cpu(cpu_data, cpu);
#ifdef CONFIG_SMP
+ const struct cpuinfo_parisc *cpuinfo = &per_cpu(cpu_data, cpu);
+
if (0 == cpuinfo->hpa)
continue;
#endif
@@ -425,8 +433,7 @@ show_cpuinfo (struct seq_file *m, void *v)
seq_printf(m, "model\t\t: %s - %s\n",
boot_cpu_data.pdc.sys_model_name,
- cpuinfo->dev ?
- cpuinfo->dev->name : "Unknown");
+ cpu_name);
seq_printf(m, "hversion\t: 0x%08x\n"
"sversion\t: 0x%08x\n",