* [PATCH] intel-lpss: Set the device in reset state when init
@ 2019-04-08 5:41 ` Binbin Wu
0 siblings, 0 replies; 6+ messages in thread
From: Binbin Wu @ 2019-04-08 5:41 UTC (permalink / raw
To: rjw, linux-pm, gregkh, lee.jones, mika.westerberg, linux-kernel,
dmaengine, andriy.shevchenko
Cc: binbin.wu
In virtualized setup, when system reboots due to warm
reset interrupt storm is seen.
Call Trace:
<IRQ>
dump_stack+0x70/0xa5
__report_bad_irq+0x2e/0xc0
note_interrupt+0x248/0x290
? add_interrupt_randomness+0x30/0x220
handle_irq_event_percpu+0x54/0x80
handle_irq_event+0x39/0x60
handle_fasteoi_irq+0x91/0x150
handle_irq+0x108/0x180
do_IRQ+0x52/0xf0
common_interrupt+0xf/0xf
</IRQ>
RIP: 0033:0x76fc2cfabc1d
Code: 24 28 bf 03 00 00 00 31 c0 48 8d 35 63 77 0e 00 48 8d 15 2e
94 0e 00 4c 89 f9 49 89 d9 4c 89 d3 e8 b8 e2 01 00 48 8b 54 24 18
<48> 89 ef 48 89 de 4c 89 e1 e8 d5 97 01 00 84 c0 74 2d 48 8b 04
24
RSP: 002b:00007ffd247c1fc0 EFLAGS: 00000293 ORIG_RAX: ffffffffffffffda
RAX: 0000000000000000 RBX: 00007ffd247c1ff0 RCX: 000000000003d3ce
RDX: 0000000000000000 RSI: 00007ffd247c1ff0 RDI: 000076fc2cbb6010
RBP: 000076fc2cded010 R08: 00007ffd247c2210 R09: 00007ffd247c22a0
R10: 000076fc29465470 R11: 0000000000000000 R12: 00007ffd247c1fc0
R13: 000076fc2ce8e470 R14: 000076fc27ec9960 R15: 0000000000000414
handlers:
[<000000000d3fa913>] idma64_irq
Disabling IRQ #27
To avoid interrupt storm, set the device in reset state
before bringing out the device from reset state.
Signed-off-by: Binbin Wu <binbin.wu@intel.com>
---
drivers/mfd/intel-lpss.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/mfd/intel-lpss.c b/drivers/mfd/intel-lpss.c
index 50bffc3..ff3fba1 100644
--- a/drivers/mfd/intel-lpss.c
+++ b/drivers/mfd/intel-lpss.c
@@ -273,6 +273,9 @@ static void intel_lpss_init_dev(const struct intel_lpss *lpss)
{
u32 value = LPSS_PRIV_SSP_REG_DIS_DMA_FIN;
+ /* Set the device in reset state */
+ writel(0, lpss->priv + LPSS_PRIV_RESETS);
+
intel_lpss_deassert_reset(lpss);
intel_lpss_set_remap_addr(lpss);
--
2.7.4
^ permalink raw reply related [flat|nested] 6+ messages in thread
* intel-lpss: Set the device in reset state when init
@ 2019-04-08 5:41 ` Binbin Wu
0 siblings, 0 replies; 6+ messages in thread
From: Binbin Wu @ 2019-04-08 5:41 UTC (permalink / raw
To: rjw, linux-pm, gregkh, lee.jones, mika.westerberg, linux-kernel,
dmaengine, andriy.shevchenko
Cc: binbin.wu
In virtualized setup, when system reboots due to warm
reset interrupt storm is seen.
Call Trace:
<IRQ>
dump_stack+0x70/0xa5
__report_bad_irq+0x2e/0xc0
note_interrupt+0x248/0x290
? add_interrupt_randomness+0x30/0x220
handle_irq_event_percpu+0x54/0x80
handle_irq_event+0x39/0x60
handle_fasteoi_irq+0x91/0x150
handle_irq+0x108/0x180
do_IRQ+0x52/0xf0
common_interrupt+0xf/0xf
</IRQ>
RIP: 0033:0x76fc2cfabc1d
Code: 24 28 bf 03 00 00 00 31 c0 48 8d 35 63 77 0e 00 48 8d 15 2e
94 0e 00 4c 89 f9 49 89 d9 4c 89 d3 e8 b8 e2 01 00 48 8b 54 24 18
<48> 89 ef 48 89 de 4c 89 e1 e8 d5 97 01 00 84 c0 74 2d 48 8b 04
24
RSP: 002b:00007ffd247c1fc0 EFLAGS: 00000293 ORIG_RAX: ffffffffffffffda
RAX: 0000000000000000 RBX: 00007ffd247c1ff0 RCX: 000000000003d3ce
RDX: 0000000000000000 RSI: 00007ffd247c1ff0 RDI: 000076fc2cbb6010
RBP: 000076fc2cded010 R08: 00007ffd247c2210 R09: 00007ffd247c22a0
R10: 000076fc29465470 R11: 0000000000000000 R12: 00007ffd247c1fc0
R13: 000076fc2ce8e470 R14: 000076fc27ec9960 R15: 0000000000000414
handlers:
[<000000000d3fa913>] idma64_irq
Disabling IRQ #27
To avoid interrupt storm, set the device in reset state
before bringing out the device from reset state.
Signed-off-by: Binbin Wu <binbin.wu@intel.com>
---
drivers/mfd/intel-lpss.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/mfd/intel-lpss.c b/drivers/mfd/intel-lpss.c
index 50bffc3..ff3fba1 100644
--- a/drivers/mfd/intel-lpss.c
+++ b/drivers/mfd/intel-lpss.c
@@ -273,6 +273,9 @@ static void intel_lpss_init_dev(const struct intel_lpss *lpss)
{
u32 value = LPSS_PRIV_SSP_REG_DIS_DMA_FIN;
+ /* Set the device in reset state */
+ writel(0, lpss->priv + LPSS_PRIV_RESETS);
+
intel_lpss_deassert_reset(lpss);
intel_lpss_set_remap_addr(lpss);
^ permalink raw reply related [flat|nested] 6+ messages in thread
* Re: [PATCH] intel-lpss: Set the device in reset state when init
@ 2019-04-08 7:43 ` Mika Westerberg
0 siblings, 0 replies; 6+ messages in thread
From: Mika Westerberg @ 2019-04-08 7:43 UTC (permalink / raw
To: Binbin Wu
Cc: rjw, linux-pm, gregkh, lee.jones, linux-kernel, dmaengine,
andriy.shevchenko
On Mon, Apr 08, 2019 at 01:41:58PM +0800, Binbin Wu wrote:
> In virtualized setup, when system reboots due to warm
> reset interrupt storm is seen.
>
> Call Trace:
> <IRQ>
> dump_stack+0x70/0xa5
> __report_bad_irq+0x2e/0xc0
> note_interrupt+0x248/0x290
> ? add_interrupt_randomness+0x30/0x220
> handle_irq_event_percpu+0x54/0x80
> handle_irq_event+0x39/0x60
> handle_fasteoi_irq+0x91/0x150
> handle_irq+0x108/0x180
> do_IRQ+0x52/0xf0
> common_interrupt+0xf/0xf
> </IRQ>
> RIP: 0033:0x76fc2cfabc1d
> Code: 24 28 bf 03 00 00 00 31 c0 48 8d 35 63 77 0e 00 48 8d 15 2e
> 94 0e 00 4c 89 f9 49 89 d9 4c 89 d3 e8 b8 e2 01 00 48 8b 54 24 18
> <48> 89 ef 48 89 de 4c 89 e1 e8 d5 97 01 00 84 c0 74 2d 48 8b 04
> 24
> RSP: 002b:00007ffd247c1fc0 EFLAGS: 00000293 ORIG_RAX: ffffffffffffffda
> RAX: 0000000000000000 RBX: 00007ffd247c1ff0 RCX: 000000000003d3ce
> RDX: 0000000000000000 RSI: 00007ffd247c1ff0 RDI: 000076fc2cbb6010
> RBP: 000076fc2cded010 R08: 00007ffd247c2210 R09: 00007ffd247c22a0
> R10: 000076fc29465470 R11: 0000000000000000 R12: 00007ffd247c1fc0
> R13: 000076fc2ce8e470 R14: 000076fc27ec9960 R15: 0000000000000414
> handlers:
> [<000000000d3fa913>] idma64_irq
> Disabling IRQ #27
>
> To avoid interrupt storm, set the device in reset state
> before bringing out the device from reset state.
>
> Signed-off-by: Binbin Wu <binbin.wu@intel.com>
I think the correct subject line should be:
"mfd: intel-lpss: Set the device in reset state when init"
Regardless of that,
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
^ permalink raw reply [flat|nested] 6+ messages in thread
* intel-lpss: Set the device in reset state when init
@ 2019-04-08 7:43 ` Mika Westerberg
0 siblings, 0 replies; 6+ messages in thread
From: Mika Westerberg @ 2019-04-08 7:43 UTC (permalink / raw
To: Binbin Wu
Cc: rjw, linux-pm, gregkh, lee.jones, linux-kernel, dmaengine,
andriy.shevchenko
On Mon, Apr 08, 2019 at 01:41:58PM +0800, Binbin Wu wrote:
> In virtualized setup, when system reboots due to warm
> reset interrupt storm is seen.
>
> Call Trace:
> <IRQ>
> dump_stack+0x70/0xa5
> __report_bad_irq+0x2e/0xc0
> note_interrupt+0x248/0x290
> ? add_interrupt_randomness+0x30/0x220
> handle_irq_event_percpu+0x54/0x80
> handle_irq_event+0x39/0x60
> handle_fasteoi_irq+0x91/0x150
> handle_irq+0x108/0x180
> do_IRQ+0x52/0xf0
> common_interrupt+0xf/0xf
> </IRQ>
> RIP: 0033:0x76fc2cfabc1d
> Code: 24 28 bf 03 00 00 00 31 c0 48 8d 35 63 77 0e 00 48 8d 15 2e
> 94 0e 00 4c 89 f9 49 89 d9 4c 89 d3 e8 b8 e2 01 00 48 8b 54 24 18
> <48> 89 ef 48 89 de 4c 89 e1 e8 d5 97 01 00 84 c0 74 2d 48 8b 04
> 24
> RSP: 002b:00007ffd247c1fc0 EFLAGS: 00000293 ORIG_RAX: ffffffffffffffda
> RAX: 0000000000000000 RBX: 00007ffd247c1ff0 RCX: 000000000003d3ce
> RDX: 0000000000000000 RSI: 00007ffd247c1ff0 RDI: 000076fc2cbb6010
> RBP: 000076fc2cded010 R08: 00007ffd247c2210 R09: 00007ffd247c22a0
> R10: 000076fc29465470 R11: 0000000000000000 R12: 00007ffd247c1fc0
> R13: 000076fc2ce8e470 R14: 000076fc27ec9960 R15: 0000000000000414
> handlers:
> [<000000000d3fa913>] idma64_irq
> Disabling IRQ #27
>
> To avoid interrupt storm, set the device in reset state
> before bringing out the device from reset state.
>
> Signed-off-by: Binbin Wu <binbin.wu@intel.com>
I think the correct subject line should be:
"mfd: intel-lpss: Set the device in reset state when init"
Regardless of that,
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
^ permalink raw reply [flat|nested] 6+ messages in thread
* RE: [PATCH] intel-lpss: Set the device in reset state when init
@ 2019-04-08 8:05 ` Binbin Wu
0 siblings, 0 replies; 6+ messages in thread
From: Wu, Binbin @ 2019-04-08 8:05 UTC (permalink / raw
To: Mika Westerberg
Cc: rjw@rjwysocki.net, linux-pm@vger.kernel.org,
gregkh@linuxfoundation.org, lee.jones@linaro.org,
linux-kernel@vger.kernel.org, dmaengine@vger.kernel.org,
andriy.shevchenko@linux.intel.com
Hi Mika,
Will correct the title line in the next version.
Thanks.
--
Best wishes,
Binbin
> -----Original Message-----
> From: Mika Westerberg [mailto:mika.westerberg@linux.intel.com]
> Sent: Monday, April 8, 2019 3:43 PM
> To: Wu, Binbin <binbin.wu@intel.com>
> Cc: rjw@rjwysocki.net; linux-pm@vger.kernel.org;
> gregkh@linuxfoundation.org; lee.jones@linaro.org; linux-
> kernel@vger.kernel.org; dmaengine@vger.kernel.org;
> andriy.shevchenko@linux.intel.com
> Subject: Re: [PATCH] intel-lpss: Set the device in reset state when init
>
> On Mon, Apr 08, 2019 at 01:41:58PM +0800, Binbin Wu wrote:
> > In virtualized setup, when system reboots due to warm reset interrupt
> > storm is seen.
> >
> > Call Trace:
> > <IRQ>
> > dump_stack+0x70/0xa5
> > __report_bad_irq+0x2e/0xc0
> > note_interrupt+0x248/0x290
> > ? add_interrupt_randomness+0x30/0x220
> > handle_irq_event_percpu+0x54/0x80
> > handle_irq_event+0x39/0x60
> > handle_fasteoi_irq+0x91/0x150
> > handle_irq+0x108/0x180
> > do_IRQ+0x52/0xf0
> > common_interrupt+0xf/0xf
> > </IRQ>
> > RIP: 0033:0x76fc2cfabc1d
> > Code: 24 28 bf 03 00 00 00 31 c0 48 8d 35 63 77 0e 00 48 8d 15 2e
> > 94 0e 00 4c 89 f9 49 89 d9 4c 89 d3 e8 b8 e2 01 00 48 8b 54 24 18 <48>
> > 89 ef 48 89 de 4c 89 e1 e8 d5 97 01 00 84 c0 74 2d 48 8b 04
> > 24
> > RSP: 002b:00007ffd247c1fc0 EFLAGS: 00000293 ORIG_RAX: ffffffffffffffda
> > RAX: 0000000000000000 RBX: 00007ffd247c1ff0 RCX: 000000000003d3ce
> > RDX: 0000000000000000 RSI: 00007ffd247c1ff0 RDI: 000076fc2cbb6010
> > RBP: 000076fc2cded010 R08: 00007ffd247c2210 R09: 00007ffd247c22a0
> > R10: 000076fc29465470 R11: 0000000000000000 R12: 00007ffd247c1fc0
> > R13: 000076fc2ce8e470 R14: 000076fc27ec9960 R15: 0000000000000414
> > handlers:
> > [<000000000d3fa913>] idma64_irq
> > Disabling IRQ #27
> >
> > To avoid interrupt storm, set the device in reset state before
> > bringing out the device from reset state.
> >
> > Signed-off-by: Binbin Wu <binbin.wu@intel.com>
>
> I think the correct subject line should be:
>
> "mfd: intel-lpss: Set the device in reset state when init"
>
> Regardless of that,
>
> Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
^ permalink raw reply [flat|nested] 6+ messages in thread
* intel-lpss: Set the device in reset state when init
@ 2019-04-08 8:05 ` Binbin Wu
0 siblings, 0 replies; 6+ messages in thread
From: Binbin Wu @ 2019-04-08 8:05 UTC (permalink / raw
To: Mika Westerberg
Cc: rjw@rjwysocki.net, linux-pm@vger.kernel.org,
gregkh@linuxfoundation.org, lee.jones@linaro.org,
linux-kernel@vger.kernel.org, dmaengine@vger.kernel.org,
andriy.shevchenko@linux.intel.com
Hi Mika,
Will correct the title line in the next version.
Thanks.
---
Best wishes,
Binbin
> -----Original Message-----
> From: Mika Westerberg [mailto:mika.westerberg@linux.intel.com]
> Sent: Monday, April 8, 2019 3:43 PM
> To: Wu, Binbin <binbin.wu@intel.com>
> Cc: rjw@rjwysocki.net; linux-pm@vger.kernel.org;
> gregkh@linuxfoundation.org; lee.jones@linaro.org; linux-
> kernel@vger.kernel.org; dmaengine@vger.kernel.org;
> andriy.shevchenko@linux.intel.com
> Subject: Re: [PATCH] intel-lpss: Set the device in reset state when init
>
> On Mon, Apr 08, 2019 at 01:41:58PM +0800, Binbin Wu wrote:
> > In virtualized setup, when system reboots due to warm reset interrupt
> > storm is seen.
> >
> > Call Trace:
> > <IRQ>
> > dump_stack+0x70/0xa5
> > __report_bad_irq+0x2e/0xc0
> > note_interrupt+0x248/0x290
> > ? add_interrupt_randomness+0x30/0x220
> > handle_irq_event_percpu+0x54/0x80
> > handle_irq_event+0x39/0x60
> > handle_fasteoi_irq+0x91/0x150
> > handle_irq+0x108/0x180
> > do_IRQ+0x52/0xf0
> > common_interrupt+0xf/0xf
> > </IRQ>
> > RIP: 0033:0x76fc2cfabc1d
> > Code: 24 28 bf 03 00 00 00 31 c0 48 8d 35 63 77 0e 00 48 8d 15 2e
> > 94 0e 00 4c 89 f9 49 89 d9 4c 89 d3 e8 b8 e2 01 00 48 8b 54 24 18 <48>
> > 89 ef 48 89 de 4c 89 e1 e8 d5 97 01 00 84 c0 74 2d 48 8b 04
> > 24
> > RSP: 002b:00007ffd247c1fc0 EFLAGS: 00000293 ORIG_RAX: ffffffffffffffda
> > RAX: 0000000000000000 RBX: 00007ffd247c1ff0 RCX: 000000000003d3ce
> > RDX: 0000000000000000 RSI: 00007ffd247c1ff0 RDI: 000076fc2cbb6010
> > RBP: 000076fc2cded010 R08: 00007ffd247c2210 R09: 00007ffd247c22a0
> > R10: 000076fc29465470 R11: 0000000000000000 R12: 00007ffd247c1fc0
> > R13: 000076fc2ce8e470 R14: 000076fc27ec9960 R15: 0000000000000414
> > handlers:
> > [<000000000d3fa913>] idma64_irq
> > Disabling IRQ #27
> >
> > To avoid interrupt storm, set the device in reset state before
> > bringing out the device from reset state.
> >
> > Signed-off-by: Binbin Wu <binbin.wu@intel.com>
>
> I think the correct subject line should be:
>
> "mfd: intel-lpss: Set the device in reset state when init"
>
> Regardless of that,
>
> Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2019-04-08 8:05 UTC | newest]
Thread overview: 6+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2019-04-08 5:41 [PATCH] intel-lpss: Set the device in reset state when init Binbin Wu
2019-04-08 5:41 ` Binbin Wu
2019-04-08 7:43 ` [PATCH] " Mika Westerberg
2019-04-08 7:43 ` Mika Westerberg
2019-04-08 8:05 ` [PATCH] " Wu, Binbin
2019-04-08 8:05 ` Binbin Wu
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