From: Jacob Pan <jacob.jun.pan@linux.intel.com>
To: LKML <linux-kernel@vger.kernel.org>,
"H. Peter Anvin" <hpa@zytor.com>, Ingo Molnar <mingo@elte.hu>,
Thomas Gleixner <tglx@linutronix.de>
Cc: Jacob Pan <jacob.jun.pan@linux.intel.com>
Subject: [PATCH] x86/apic: do not clear nr_irqs_gsi if no legacy irqs
Date: Mon, 28 Jun 2010 13:09:53 -0700 [thread overview]
Message-ID: <1277755793-15551-1-git-send-email-jacob.jun.pan@linux.intel.com> (raw)
nr_legacy_irqs is set in probe_nr_irqs_gsi, we should not clear it after that.
Otherwise, the result is that MSI irqs will be allocated from the wrong range
for the systems without legacy PIC.
Signed-off-by: Jacob Pan <jacob.jun.pan@linux.intel.com>
---
arch/x86/kernel/apic/io_apic.c | 4 +---
1 files changed, 1 insertions(+), 3 deletions(-)
diff --git a/arch/x86/kernel/apic/io_apic.c b/arch/x86/kernel/apic/io_apic.c
index d99388a..5592462 100644
--- a/arch/x86/kernel/apic/io_apic.c
+++ b/arch/x86/kernel/apic/io_apic.c
@@ -155,10 +155,8 @@ int __init arch_early_irq_init(void)
int node;
int i;
- if (!legacy_pic->nr_legacy_irqs) {
- nr_irqs_gsi = 0;
+ if (!legacy_pic->nr_legacy_irqs)
io_apic_irqs = ~0UL;
- }
cfg = irq_cfgx;
count = ARRAY_SIZE(irq_cfgx);
--
1.6.3.3
reply other threads:[~2010-06-28 20:17 UTC|newest]
Thread overview: [no followups] expand[flat|nested] mbox.gz Atom feed
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1277755793-15551-1-git-send-email-jacob.jun.pan@linux.intel.com \
--to=jacob.jun.pan@linux.intel.com \
--cc=hpa@zytor.com \
--cc=linux-kernel@vger.kernel.org \
--cc=mingo@elte.hu \
--cc=tglx@linutronix.de \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox
Powered by JetHome