From: Andreas Eversberg <andreas@eversberg.eu>
Date: Sat, 6 Sep 2008 07:11:03 +0000 (+0200)
Subject: mISDN: Fix irq detection
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=9e6115f2f5a9f8568bc8565d1401086952f09736;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git

mISDN: Fix irq detection

Fix false irq detection on disabled irqs.

Signed-off-by: Andreas Eversberg <andreas@eversberg.eu>
Signed-off-by: Karsten Keil <kkeil@suse.de>
---

diff --git a/drivers/isdn/hardware/mISDN/hfcmulti.c b/drivers/isdn/hardware/mISDN/hfcmulti.c
index 592db93105f9..4cfab20d71a9 100644
--- a/drivers/isdn/hardware/mISDN/hfcmulti.c
+++ b/drivers/isdn/hardware/mISDN/hfcmulti.c
@@ -2658,6 +2658,7 @@ hfcmulti_interrupt(int intno, void *dev_id)
 	if (status & V_MISC_IRQSTA) {
 		/* misc IRQ */
 		r_irq_misc = HFC_inb_nodebug(hc, R_IRQ_MISC);
+		r_irq_misc &= hc->hw.r_irqmsk_misc; /* ignore disabled irqs */
 		if (r_irq_misc & V_STA_IRQ) {
 			if (hc->type == 1) {
 				/* state machine */