AuxXxilium/linux_dsm_epyc7002
1
0
Fork 0
mirror of https://github.com/AuxXxilium/linux_dsm_epyc7002.git synced 2024-11-24 01:00:52 +07:00
Code Issues Actions Packages Projects Releases Wiki Activity

irqchip/loongson-htvec: Fix initial interrupt clearing

Browse Source 
In htvec_reset() only the first group of initial interrupts is cleared.
This sometimes causes spurious interrupts, so let's clear all groups.

While at it, fix the nearby comment that to match the reality of what
the driver does.

Fixes: 818e915fba ("irqchip: Add Loongson HyperTransport Vector support")
Signed-off-by: Huacai Chen <chenhc@lemote.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/1599819978-13999-2-git-send-email-chenhc@lemote.com
This commit is contained in:
Huacai Chen 2020-09-11 18:26:18 +08:00 committed by Marc Zyngier
parent 8ddf1905a9
commit 1d1e5630de
1 changed files with 2 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
drivers/irqchip/irq-loongson-htvec.c
View File

@ -151,7 +151,7 @@ static void htvec_reset(struct htvec *priv)
/* Clear IRQ cause registers, mask all interrupts */
for (idx = 0; idx < priv->num_parents; idx++) {
writel_relaxed(0x0, priv->base + HTVEC_EN_OFF + 4 * idx);
writel_relaxed(0xFFFFFFFF, priv->base);
writel_relaxed(0xFFFFFFFF, priv->base + 4 * idx);
}
}
@ -172,7 +172,7 @@ static int htvec_of_init(struct device_node *node,
goto free_priv;
}
/* Interrupt may come from any of the 4 interrupt line */
/* Interrupt may come from any of the 8 interrupt lines */
for (i = 0; i < HTVEC_MAX_PARENT_IRQ; i++) {
parent_irq[i] = irq_of_parse_and_map(node, i);
if (parent_irq[i] <= 0)