From: Helge Deller Date: Tue, 25 Nov 2025 14:23:02 +0000 (+0100) Subject: parisc: Do not reprogram affinitiy on ASP chip X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=dca7da244349eef4d78527cafc0bf80816b261f5;p=thirdparty%2Fkernel%2Fstable.git parisc: Do not reprogram affinitiy on ASP chip 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 --- diff --git a/drivers/parisc/gsc.c b/drivers/parisc/gsc.c index a0daaa548bc39..8ba778170447e 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);