From: Samuel Mendoza-Jonas <sam@mendozajonas.com>
To: linuxppc-dev@ozlabs.org
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Jiri Slaby <jslaby@suse.com>,
Michael Ellerman <mpe@ellerman.id.au>,
Alistair Popple <alistair@popple.id.au>,
Samuel Mendoza-Jonas <sam@mendozajonas.com>,
"# 4 . 1 . x-" <stable@vger.kernel.org>
Subject: [PATCH V2 2/2] tty/hvc: Use opal irqchip interface if available
Date: Mon, 11 Jul 2016 13:38:58 +1000 [thread overview]
Message-ID: <20160711033858.16172-2-sam@mendozajonas.com> (raw)
In-Reply-To: <20160711033858.16172-1-sam@mendozajonas.com>
Update the hvc driver to use the OPAL irqchip if made available by the
running firmware. If it is not present, the driver falls back to the
existing OPAL event number.
Signed-off-by: Samuel Mendoza-Jonas <sam@mendozajonas.com>
Cc: <stable@vger.kernel.org> # 4.1.x-
---
v2: Always try irq_of_parse_and_map before falling back
drivers/tty/hvc/hvc_opal.c | 8 +++++++-
1 file changed, 7 insertions(+), 1 deletion(-)
diff --git a/drivers/tty/hvc/hvc_opal.c b/drivers/tty/hvc/hvc_opal.c
index b7cd0ae..5107993 100644
--- a/drivers/tty/hvc/hvc_opal.c
+++ b/drivers/tty/hvc/hvc_opal.c
@@ -214,7 +214,13 @@ static int hvc_opal_probe(struct platform_device *dev)
dev->dev.of_node->full_name,
boot ? " (boot console)" : "");
- irq = opal_event_request(ilog2(OPAL_EVENT_CONSOLE_INPUT));
+ irq = irq_of_parse_and_map(dev->dev.of_node, 0);
+ if (!irq) {
+ pr_info("hvc%d: No interrupts property, using OPAL event\n",
+ termno);
+ irq = opal_event_request(ilog2(OPAL_EVENT_CONSOLE_INPUT));
+ }
+
if (!irq) {
pr_err("hvc_opal: Unable to map interrupt for device %s\n",
dev->dev.of_node->full_name);
--
2.9.0
next prev parent reply other threads:[~2016-07-11 3:40 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-07-11 3:38 [PATCH V2 1/2] tty/hvc: Use IRQF_SHARED for OPAL hvc consoles Samuel Mendoza-Jonas
2016-07-11 3:38 ` Samuel Mendoza-Jonas [this message]
2016-07-11 6:28 ` [PATCH V2 2/2] tty/hvc: Use opal irqchip interface if available Michael Ellerman
2016-07-27 14:32 ` [V2,2/2] " Michael Ellerman
2016-07-11 6:29 ` [PATCH V2 1/2] tty/hvc: Use IRQF_SHARED for OPAL hvc consoles Michael Ellerman
2016-07-26 4:11 ` Michael Ellerman
2016-07-26 4:28 ` Greg KH
2016-07-26 9:49 ` Michael Ellerman
2016-07-27 14:32 ` [V2,1/2] " Michael Ellerman
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