* [PATCH v2] i2c: rcar: make sure clocks are on when doing hw init
@ 2015-10-29 22:46 Wolfram Sang
2015-10-30 0:41 ` Kuninori Morimoto
2015-10-30 4:35 ` Laurent Pinchart
0 siblings, 2 replies; 6+ messages in thread
From: Wolfram Sang @ 2015-10-29 22:46 UTC (permalink / raw)
To: linux-i2c
Cc: linux-sh, Magnus Damm, Simon Horman, Laurent Pinchart,
Geert Uytterhoeven, Wolfram Sang, Kuninori Morimoto
From: Wolfram Sang <wsa+renesas@sang-engineering.com>
Reported-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
---
drivers/i2c/busses/i2c-rcar.c | 13 +++++++++----
1 file changed, 9 insertions(+), 4 deletions(-)
diff --git a/drivers/i2c/busses/i2c-rcar.c b/drivers/i2c/busses/i2c-rcar.c
index 616433d387cdb2..58dbd30c24d1cc 100644
--- a/drivers/i2c/busses/i2c-rcar.c
+++ b/drivers/i2c/busses/i2c-rcar.c
@@ -612,7 +612,10 @@ static int rcar_i2c_probe(struct platform_device *pdev)
if (IS_ERR(priv->io))
return PTR_ERR(priv->io);
+ pm_runtime_enable(dev);
+ pm_runtime_get_sync(dev);
rcar_i2c_init(priv);
+ pm_runtime_put(dev);
irq = platform_get_irq(pdev, 0);
init_waitqueue_head(&priv->wait);
@@ -631,22 +634,24 @@ static int rcar_i2c_probe(struct platform_device *pdev)
dev_name(dev), priv);
if (ret < 0) {
dev_err(dev, "cannot get irq %d\n", irq);
- return ret;
+ goto out_pm_disable;
}
- pm_runtime_enable(dev);
platform_set_drvdata(pdev, priv);
ret = i2c_add_numbered_adapter(adap);
if (ret < 0) {
dev_err(dev, "reg adap failed: %d\n", ret);
- pm_runtime_disable(dev);
- return ret;
+ goto out_pm_disable;
}
dev_info(dev, "probed\n");
return 0;
+
+ out_pm_disable:
+ pm_runtime_disable(dev);
+ return ret;
}
static int rcar_i2c_remove(struct platform_device *pdev)
--
2.1.4
^ permalink raw reply related [flat|nested] 6+ messages in thread
* Re: [PATCH v2] i2c: rcar: make sure clocks are on when doing hw init
2015-10-29 22:46 [PATCH v2] i2c: rcar: make sure clocks are on when doing hw init Wolfram Sang
@ 2015-10-30 0:41 ` Kuninori Morimoto
2015-10-30 4:35 ` Laurent Pinchart
1 sibling, 0 replies; 6+ messages in thread
From: Kuninori Morimoto @ 2015-10-30 0:41 UTC (permalink / raw)
To: Wolfram Sang
Cc: linux-i2c, linux-sh, Magnus Damm, Simon Horman, Laurent Pinchart,
Geert Uytterhoeven
Hi Wolfram Sang wrote:
>
> From: Wolfram Sang <wsa+renesas@sang-engineering.com>
>
> Reported-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
> Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
> ---
Please add explain why this patch is needed, and what happen
without this patch.
And my previous patch didn't explain this, but please add
93c659d820ef291f6ca5e628f44b26cfb2226aba
was cause of this issue.
> drivers/i2c/busses/i2c-rcar.c | 13 +++++++++----
> 1 file changed, 9 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/i2c/busses/i2c-rcar.c b/drivers/i2c/busses/i2c-rcar.c
> index 616433d387cdb2..58dbd30c24d1cc 100644
> --- a/drivers/i2c/busses/i2c-rcar.c
> +++ b/drivers/i2c/busses/i2c-rcar.c
> @@ -612,7 +612,10 @@ static int rcar_i2c_probe(struct platform_device *pdev)
> if (IS_ERR(priv->io))
> return PTR_ERR(priv->io);
>
> + pm_runtime_enable(dev);
> + pm_runtime_get_sync(dev);
> rcar_i2c_init(priv);
> + pm_runtime_put(dev);
>
> irq = platform_get_irq(pdev, 0);
> init_waitqueue_head(&priv->wait);
> @@ -631,22 +634,24 @@ static int rcar_i2c_probe(struct platform_device *pdev)
> dev_name(dev), priv);
> if (ret < 0) {
> dev_err(dev, "cannot get irq %d\n", irq);
> - return ret;
> + goto out_pm_disable;
> }
>
> - pm_runtime_enable(dev);
> platform_set_drvdata(pdev, priv);
>
> ret = i2c_add_numbered_adapter(adap);
> if (ret < 0) {
> dev_err(dev, "reg adap failed: %d\n", ret);
> - pm_runtime_disable(dev);
> - return ret;
> + goto out_pm_disable;
> }
>
> dev_info(dev, "probed\n");
>
> return 0;
> +
> + out_pm_disable:
> + pm_runtime_disable(dev);
> + return ret;
> }
>
> static int rcar_i2c_remove(struct platform_device *pdev)
> --
> 2.1.4
>
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [PATCH v2] i2c: rcar: make sure clocks are on when doing hw init
2015-10-29 22:46 [PATCH v2] i2c: rcar: make sure clocks are on when doing hw init Wolfram Sang
2015-10-30 0:41 ` Kuninori Morimoto
@ 2015-10-30 4:35 ` Laurent Pinchart
2015-10-30 8:02 ` Wolfram Sang
2015-10-30 8:16 ` Geert Uytterhoeven
1 sibling, 2 replies; 6+ messages in thread
From: Laurent Pinchart @ 2015-10-30 4:35 UTC (permalink / raw)
To: Wolfram Sang
Cc: linux-i2c, linux-sh, Magnus Damm, Simon Horman,
Geert Uytterhoeven, Kuninori Morimoto
Hi Wolfram,
Thank you for the patch.
I'm afraid this doesn't make any noticeable difference. With or without the
patch applied the adv7511 can't be detected using the latest driver tag
(renesas-devel-20151026-v4.3-rc7).
However, I have a bit more information to report.
First of all, I got one kernel panic.
[ 9.596439] [drm] Supports vblank timestamp caching Rev 2 (21.10.2013).
[ 9.603252] [drm] No driver support for vblank timestamp query.
[ 9.609724] rcar-du feb00000.display: failed to initialize DRM/KMS (-517)
[ 9.616106] adv7180 2-0020: chip found @ 0x20 (e6530000.i2c)
[ 9.632980] rcar_thermal e61f0000.thermal: 1 sensor probed
[ 9.641533] Unable to handle kernel paging request at virtual address
ffffffff
[ 9.648927] pgd = eb2adf40
[ 9.651695] [ffffffff] *pgd=80000040007003, *pmd=6bfde003, *pte=00000000
[ 9.658579] Internal error: Oops: a07 [#1] SMP ARM
[ 9.663475] Modules linked in: rcar_thermal adv7180(+) phy_rcar_gen2
soundcore udc_core
[ 9.671719] CPU: 0 PID: 552 Comm: udevd Not tainted 4.3.0-rc7-07332-
gfb990fd3ff96 #114
[ 9.679811] Hardware name: Generic R8A7791 (Flattened Device Tree)
[ 9.686125] task: eb11f400 ti: ea92e000 task.ti: ea92e000
[ 9.691653] PC is at rcar_i2c_irq+0xd4/0x3e4
[ 9.696018] LR is at rcar_i2c_write+0x28/0x38
[ 9.700471] pc : [<c0324588>] lr : [<c0323cf0>] psr: 80000193
[ 9.700471] sp : ea92fea8 ip : ea92fe88 fp : ea92fecc
[ 9.712200] r10: 00000000 r9 : c067f37c r8 : 00000000
[ 9.717538] r7 : 00000000 r6 : ea92db38 r5 : 00000000 r4 : eb223c10
[ 9.724206] r3 : 00000000 r2 : ffffffff r1 : 00000000 r0 : eb223c10
[ 9.730877] Flags: Nzcv IRQs off FIQs on Mode SVC_32 ISA ARM Segment
user
[ 9.738260] Control: 30c5387d Table: 6b2adf40 DAC: fffffffd
[ 9.744131] Process udevd (pid: 552, stack limit = 0xea92e210)
[ 9.750090] Stack: (0xea92fea8 to 0xea930000)
[ 9.754543] fea0: c0121368 c011cdfc eb1f9b90 eb21cc40
eb1d4220 00000068
[ 9.762903] fec0: ea92ff0c ea92fed0 c00727bc c03244c0 ea886198 00000101
eada6e90 eb1d41c0
[ 9.771263] fee0: 00000000 eb1d41c0 eb1d4220 00000000 00000000 eb00a800
00000003 f0803000
[ 9.779622] ff00: ea92ff2c ea92ff10 c0072a24 c0072760 00000000 eb1d41c0
c0656484 00000000
[ 9.787981] ff20: ea92ff4c ea92ff30 c0075e40 c00729c0 c0075d80 00000068
c06361f0 00000000
[ 9.796339] ff40: ea92ff5c ea92ff50 c0071fd0 c0075d8c ea92ff84 ea92ff60
c007211c c0071fb4
[ 9.804697] ff60: ea92ffb0 f0802000 f080200c c063cd10 c0656480 ea92ffb0
ea92ffac ea92ff88
[ 9.813055] ff80: c000a4a0 c00720c4 0000f948 80000010 ffffffff 30c5387d
30c5387d 00000004
[ 9.821414] ffa0: 00000000 ea92ffb0 c0015dc8 c000a45c 00000004 0001fabc
00000004 0002d00c
[ 9.829773] ffc0: 000003ef 000419be bec86de8 00041168 00032060 00000003
00000004 000419bf
[ 9.838132] ffe0: 00000018 bec86dc0 0000f97c 0000f948 80000010 ffffffff
ea92fff4 00000000
[ 9.846488] Backtrace:
[ 9.849010] [<c03244b4>] (rcar_i2c_irq) from [<c00727bc>]
(handle_irq_event_percpu+0x68/0x260)
[ 9.857810] r6:00000068 r5:eb1d4220 r4:eb21cc40
[ 9.862560] [<c0072754>] (handle_irq_event_percpu) from [<c0072a24>]
(handle_irq_event+0x70/0x94)
[ 9.871626] r10:f0803000 r9:00000003 r8:eb00a800 r7:00000000 r6:00000000
r5:eb1d4220
[ 9.879675] r4:eb1d41c0
[ 9.882278] [<c00729b4>] (handle_irq_event) from [<c0075e40>]
(handle_fasteoi_irq+0xc0/0x1c0)
[ 9.890990] r6:00000000 r5:c0656484 r4:eb1d41c0 r3:00000000
[ 9.896812] [<c0075d80>] (handle_fasteoi_irq) from [<c0071fd0>]
(generic_handle_irq+0x28/0x38)
[ 9.905612] r6:00000000 r5:c06361f0 r4:00000068 r3:c0075d80
[ 9.911433] [<c0071fa8>] (generic_handle_irq) from [<c007211c>]
(__handle_domain_irq+0x64/0xc4)
[ 9.920327] [<c00720b8>] (__handle_domain_irq) from [<c000a4a0>]
(gic_handle_irq+0x50/0x98)
[ 9.928860] r8:ea92ffb0 r7:c0656480 r6:c063cd10 r5:f080200c r4:f0802000
r3:ea92ffb0
[ 9.936824] [<c000a450>] (gic_handle_irq) from [<c0015dc8>]
(__irq_usr+0x48/0x60)
[ 9.944471] Exception stack(0xea92ffb0 to 0xea92fff8)
[ 9.949632] ffa0: 00000004 0001fabc
00000004 0002d00c
[ 9.957991] ffc0: 000003ef 000419be bec86de8 00041168 00032060 00000003
00000004 000419bf
[ 9.966349] ffe0: 00000018 bec86dc0 0000f97c 0000f948 80000010 ffffffff
[ 9.973105] r10:00000004 r8:30c5387d r7:30c5387d r6:ffffffff r5:80000010
r4:0000f948
[ 9.981158] Code: e5962008 e5941000 e5911024 f57ff04f (e7c21003)
[ 9.987389] ---[ end trace 4f04837ce7816c01 ]---
[ 9.992107] Kernel panic - not syncing: Fatal exception in interrupt
[ 9.998603] CPU1: stopping
[ 10.001380] CPU: 1 PID: 0 Comm: swapper/1 Tainted: G D 4.3.0-
rc7-07332-gfb990fd3ff96 #114
[ 10.010893] Hardware name: Generic R8A7791 (Flattened Device Tree)
[ 10.017207] Backtrace:
[ 10.019729] [<c0014b94>] (dump_backtrace) from [<c0014eac>]
(show_stack+0x20/0x24)
[ 10.027466] r6:c067f2c8 r5:00000001 r4:00000000 r3:00000000
[ 10.033297] [<c0014e8c>] (show_stack) from [<c01df344>]
(dump_stack+0x8c/0xc0)
[ 10.040686] [<c01df2b8>] (dump_stack) from [<c0018410>]
(handle_IPI+0x1b8/0x2dc)
[ 10.048245] r4:c0689430 r3:eb0ec000
[ 10.051920] [<c0018258>] (handle_IPI) from [<c000a4dc>]
(gic_handle_irq+0x8c/0x98)
[ 10.059656] r10:f0803000 r9:c063c4e8 r8:eb0edf50 r7:c0656480 r6:c063cd10
r5:f080200c
[ 10.067706] r4:f0802000 r3:00000000
[ 10.071381] [<c000a450>] (gic_handle_irq) from [<c0015b00>]
(__irq_svc+0x40/0x54)
[ 10.079029] Exception stack(0xeb0edf50 to 0xeb0edf98)
[ 10.084191] df40: 00000001 00000000
eb0edfb0 c0022e40
[ 10.092551] df60: c067f908 c063c49c 00000000 00000000 c0637280 c063c4e8
c063c4f0 eb0edfac
[ 10.100909] df80: eb0edfb0 eb0edfa0 c0012444 c0012448 60000013 ffffffff
[ 10.107665] r10:c063c4f0 r8:c0637280 r7:eb0edf84 r6:ffffffff r5:60000013
r4:c0012448
[ 10.115727] [<c0012408>] (arch_cpu_idle) from [<c0067950>]
(default_idle_call+0x30/0x3c)
[ 10.124001] [<c0067920>] (default_idle_call) from [<c0067bf4>]
(cpu_startup_entry+0x238/0x3a0)
[ 10.132806] [<c00679bc>] (cpu_startup_entry) from [<c0017fcc>]
(secondary_start_kernel+0x154/0x188)
[ 10.142050] r7:c0689458
[ 10.144652] [<c0017e78>] (secondary_start_kernel) from [<4000a58c>]
(0x4000a58c)
[ 10.152211] r5:00000000 r4:6b0818c0
[ 10.155888] ---[ end Kernel panic - not syncing: Fatal exception in
interrupt
This only occurred once, I don't know how to reproduce it.
I have also seen different errors:
[ 1.177690] i2c-rcar e6530000.i2c: error -16 : 0
[ 1.182534] adv7511: probe of 2-0039 failed with error -16
[ 1.188293] i2c-rcar e6530000.i2c: probed
-110 occurred as well.
This occurred when rebooting the board by pressing the reset button, and if I
remember correctly moving from renesas-devel-20151013v2-v4.3-rc5 to renesas-
devel-20151026-v4.3-rc7. Even though it occurred several times in a row I
can't seem to reproduce this issue now I'm afraid.
On Thursday 29 October 2015 23:46:31 Wolfram Sang wrote:
> From: Wolfram Sang <wsa+renesas@sang-engineering.com>
>
> Reported-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
> Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
> ---
> drivers/i2c/busses/i2c-rcar.c | 13 +++++++++----
> 1 file changed, 9 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/i2c/busses/i2c-rcar.c b/drivers/i2c/busses/i2c-rcar.c
> index 616433d387cdb2..58dbd30c24d1cc 100644
> --- a/drivers/i2c/busses/i2c-rcar.c
> +++ b/drivers/i2c/busses/i2c-rcar.c
> @@ -612,7 +612,10 @@ static int rcar_i2c_probe(struct platform_device *pdev)
> if (IS_ERR(priv->io))
> return PTR_ERR(priv->io);
>
> + pm_runtime_enable(dev);
> + pm_runtime_get_sync(dev);
> rcar_i2c_init(priv);
> + pm_runtime_put(dev);
>
> irq = platform_get_irq(pdev, 0);
> init_waitqueue_head(&priv->wait);
> @@ -631,22 +634,24 @@ static int rcar_i2c_probe(struct platform_device
> *pdev) dev_name(dev), priv);
> if (ret < 0) {
> dev_err(dev, "cannot get irq %d\n", irq);
> - return ret;
> + goto out_pm_disable;
> }
>
> - pm_runtime_enable(dev);
> platform_set_drvdata(pdev, priv);
>
> ret = i2c_add_numbered_adapter(adap);
> if (ret < 0) {
> dev_err(dev, "reg adap failed: %d\n", ret);
> - pm_runtime_disable(dev);
> - return ret;
> + goto out_pm_disable;
> }
>
> dev_info(dev, "probed\n");
>
> return 0;
> +
> + out_pm_disable:
> + pm_runtime_disable(dev);
> + return ret;
> }
>
> static int rcar_i2c_remove(struct platform_device *pdev)
--
Regards,
Laurent Pinchart
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [PATCH v2] i2c: rcar: make sure clocks are on when doing hw init
2015-10-30 4:35 ` Laurent Pinchart
@ 2015-10-30 8:02 ` Wolfram Sang
2015-10-30 8:16 ` Geert Uytterhoeven
1 sibling, 0 replies; 6+ messages in thread
From: Wolfram Sang @ 2015-10-30 8:02 UTC (permalink / raw)
To: Laurent Pinchart
Cc: linux-i2c, linux-sh, Magnus Damm, Simon Horman,
Geert Uytterhoeven, Kuninori Morimoto
[-- Attachment #1: Type: text/plain, Size: 863 bytes --]
> First of all, I got one kernel panic.
:( I am starting to think i should revert my last i2c-rcar series until
these issues are gone...
> I have also seen different errors:
>
> [ 1.177690] i2c-rcar e6530000.i2c: error -16 : 0
> [ 1.182534] adv7511: probe of 2-0039 failed with error -16
> [ 1.188293] i2c-rcar e6530000.i2c: probed
>
> -110 occurred as well.
I'd think you always get a -110 somewhere and all later accesses to
the bus will return -16. The bus is stalled.
> This occurred when rebooting the board by pressing the reset button, and if I
I use the reset button quite frequently, too.
> remember correctly moving from renesas-devel-20151013v2-v4.3-rc5 to renesas-
> devel-20151026-v4.3-rc7. Even though it occurred several times in a row I
> can't seem to reproduce this issue now I'm afraid.
Darn...
[-- Attachment #2: Digital signature --]
[-- Type: application/pgp-signature, Size: 819 bytes --]
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [PATCH v2] i2c: rcar: make sure clocks are on when doing hw init
2015-10-30 4:35 ` Laurent Pinchart
2015-10-30 8:02 ` Wolfram Sang
@ 2015-10-30 8:16 ` Geert Uytterhoeven
2015-10-30 14:19 ` Laurent Pinchart
1 sibling, 1 reply; 6+ messages in thread
From: Geert Uytterhoeven @ 2015-10-30 8:16 UTC (permalink / raw)
To: Laurent Pinchart
Cc: Wolfram Sang, Linux I2C, Linux-sh list, Magnus Damm, Simon Horman,
Kuninori Morimoto
Hi Laurent,
On Fri, Oct 30, 2015 at 5:35 AM, Laurent Pinchart
<laurent.pinchart@ideasonboard.com> wrote:
> [ 9.641533] Unable to handle kernel paging request at virtual address
> ffffffff
> [ 9.648927] pgd = eb2adf40
> [ 9.651695] [ffffffff] *pgd=80000040007003, *pmd=6bfde003, *pte=00000000
> [ 9.658579] Internal error: Oops: a07 [#1] SMP ARM
> [ 9.663475] Modules linked in: rcar_thermal adv7180(+) phy_rcar_gen2
> soundcore udc_core
> [ 9.671719] CPU: 0 PID: 552 Comm: udevd Not tainted 4.3.0-rc7-07332-
> gfb990fd3ff96 #114
> [ 9.679811] Hardware name: Generic R8A7791 (Flattened Device Tree)
> [ 9.686125] task: eb11f400 ti: ea92e000 task.ti: ea92e000
> [ 9.691653] PC is at rcar_i2c_irq+0xd4/0x3e4
> [ 9.696018] LR is at rcar_i2c_write+0x28/0x38
> [ 9.700471] pc : [<c0324588>] lr : [<c0323cf0>] psr: 80000193
> This only occurred once, I don't know how to reproduce it.
Do you still have the kernel binary, so you can see where exactly the crash
happened?
Gr{oetje,eeting}s,
Geert
--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org
In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [PATCH v2] i2c: rcar: make sure clocks are on when doing hw init
2015-10-30 8:16 ` Geert Uytterhoeven
@ 2015-10-30 14:19 ` Laurent Pinchart
0 siblings, 0 replies; 6+ messages in thread
From: Laurent Pinchart @ 2015-10-30 14:19 UTC (permalink / raw)
To: Geert Uytterhoeven
Cc: Wolfram Sang, Linux I2C, Linux-sh list, Magnus Damm, Simon Horman,
Kuninori Morimoto
Hi Geert,
On Friday 30 October 2015 09:16:40 Geert Uytterhoeven wrote:
> On Fri, Oct 30, 2015 at 5:35 AM, Laurent Pinchart wrote:
> > [ 9.641533] Unable to handle kernel paging request at virtual address
> > ffffffff
> > [ 9.648927] pgd = eb2adf40
> > [ 9.651695] [ffffffff] *pgd=80000040007003, *pmd=6bfde003,
> > *pte=00000000
> > [ 9.658579] Internal error: Oops: a07 [#1] SMP ARM
> > [ 9.663475] Modules linked in: rcar_thermal adv7180(+) phy_rcar_gen2
> > soundcore udc_core
> > [ 9.671719] CPU: 0 PID: 552 Comm: udevd Not tainted 4.3.0-rc7-07332-
> > gfb990fd3ff96 #114
> > [ 9.679811] Hardware name: Generic R8A7791 (Flattened Device Tree)
> > [ 9.686125] task: eb11f400 ti: ea92e000 task.ti: ea92e000
> > [ 9.691653] PC is at rcar_i2c_irq+0xd4/0x3e4
> > [ 9.696018] LR is at rcar_i2c_write+0x28/0x38
> > [ 9.700471] pc : [<c0324588>] lr : [<c0323cf0>] psr: 80000193
> >
> > This only occurred once, I don't know how to reproduce it.
>
> Do you still have the kernel binary, so you can see where exactly the crash
> happened?
I haven't kept it, but I'm pretty sure I was using renesas-devel-20151026-
v4.3-rc7 without any additional patch applied.
--
Regards,
Laurent Pinchart
^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2015-10-30 14:19 UTC | newest]
Thread overview: 6+ messages (download: mbox.gz follow: Atom feed
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2015-10-29 22:46 [PATCH v2] i2c: rcar: make sure clocks are on when doing hw init Wolfram Sang
2015-10-30 0:41 ` Kuninori Morimoto
2015-10-30 4:35 ` Laurent Pinchart
2015-10-30 8:02 ` Wolfram Sang
2015-10-30 8:16 ` Geert Uytterhoeven
2015-10-30 14:19 ` Laurent Pinchart
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