From 0f715a23918a74772ee2a567da202fd45f33378f Mon Sep 17 00:00:00 2001 From: Helge Deller Date: Tue, 25 Nov 2025 22:23:02 +0800 Subject: [PATCH] parisc: Do not reprogram affinitiy on ASP chip ANBZ: #6209 commit 845a92b74cf7a730200532ecb4482981cec9d006 stable. commit dca7da244349eef4d78527cafc0bf80816b261f5 upstream. The ASP chip is a very old variant of the GSP chip and is used e.g. in HP 730 workstations. When trying to reprogram the affinity it will crash with a HPMC as the relevant registers don't seem to be at the usual location. Let's avoid the crash by checking the sversion. Also note, that reprogramming isn't necessary either, as the HP730 is a just a single-CPU machine. Signed-off-by: Helge Deller Cc: stable@vger.kernel.org Signed-off-by: Greg Kroah-Hartman Signed-off-by: PatchPilot Signed-off-by: 410046 <410046> --- drivers/parisc/gsc.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/parisc/gsc.c b/drivers/parisc/gsc.c index ec175ae99873..11b750f12ee9 100644 --- a/drivers/parisc/gsc.c +++ b/drivers/parisc/gsc.c @@ -154,7 +154,9 @@ static int gsc_set_affinity_irq(struct irq_data *d, const struct cpumask *dest, gsc_dev->eim = ((u32) gsc_dev->gsc_irq.txn_addr) | gsc_dev->gsc_irq.txn_data; /* switch IRQ's for devices below LASI/WAX to other CPU */ - gsc_writel(gsc_dev->eim, gsc_dev->hpa + OFFSET_IAR); + /* ASP chip (svers 0x70) does not support reprogramming */ + if (gsc_dev->gsc->id.sversion != 0x70) + gsc_writel(gsc_dev->eim, gsc_dev->hpa + OFFSET_IAR); irq_data_update_effective_affinity(d, &tmask); -- Gitee