r record (no chance to make patch I myself for now, sorry), while
checking locking slightly, I noticed unrelated missing locking.
xhci_cleanup_command_queue()
We are calling it without locking, but we need to lock for accessing list.
Thanks.
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OGAWA Hirofumi
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linus only
> 3. remove unnecessary second abort try as a separate patch, send to usb-next
> 4. remove polling for the Command ring running (CRR), waiting for completion
> is enough, if completion times out then we can check CRR. for usb-next
I think we should check both of CRR and e
Mathias Nyman writes:
> On 14.12.2016 01:40, OGAWA Hirofumi wrote:
>> ping about [PATCH 1/3, 2/3, 3/3]?
>>
>
> 1/3 and 2/3 will be sent to 4.10 usb-linus after rc1,
> 3/3 maybe to usb-next after that
Thanks.
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OGAWA Hirofumi
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ping about [PATCH 1/3, 2/3, 3/3]?
OGAWA Hirofumi writes:
> Mathias Nyman writes:
>
>>> - Add xhci_handshake_sleep(), and use it.
>>
>> This seems a but overkill, I'd rather don't have xhci_handshake(),
>> xhci_handshake_sleep() and __xhci_handshake()
an say though is that after about 5 boots *with* your patch is
> that I had no boot failure nor xhci warnings, so at least no obvious
> regression either.
Thanks for testing. Looks like that root abort cause itself was fixed
somewhere. I think that workaround is not needed anymore though,
Math
/vpelletier/linux/tree/ts651_4.9-rc7
> Please do check I did not do mistakes when resolving conflicts (the 2
> last commits).
Your ts651_4.9-rc7 (latest commit) is broken somehow. The following
incremental patch for ts651_4.9-rc7 is to fix it. With this, xhci will
become same with mine.
Th
OGAWA Hirofumi writes:
>> I succeed to build 4.9-rc9 vanilla (starting from the same .config as
>> with 4.8.9) but it then fails to load produced modules. During the
>> build I have the following warnings:
>> WARNING: "_copy_from_user" [drivers/hid/
e same .config as
> with 4.8.9) but it then fails to load produced modules. During the
> build I have the following warnings:
> WARNING: "_copy_from_user" [drivers/hid/hid.ko] has no CRC!
Looks like, CONFIG_MODVERSIONS is broken. CONFIG_MODVERSIONS=n may
k;
if (result == done)
return 0;
+ if (usec <= 0)
+ break;
udelay(1);
usec--;
- } while (usec > 0);
+ }
return -ETIMEDOUT;
}
Thanks.
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OGAWA Hirofumi
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Vincent Pelletier writes:
> On Wed, 23 Nov 2016 22:48:35 +0900, OGAWA Hirofumi
> wrote:
>> ping?
>
> FWIW, I intend to run this patch on the hardware which caused the
> issue (thanks Mathias for the CC !).
>
> So far, in the very short attempt I made, I failed to ev
ping?
OGAWA Hirofumi writes:
> Current abort operation has race.
>
> xhci_handle_command_timeout()
> xhci_abort_cmd_ring()
> xhci_write_64(CMD_RING_ABORT)
> xhci_handshake(5s)
> do {
> check CMD_RING_RUNNIN
operation]
Signed-off-by: OGAWA Hirofumi
---
drivers/usb/host/xhci-mem.c |1
drivers/usb/host/xhci-ring.c | 163 ++
drivers/usb/host/xhci.h |1
3 files changed, 88 insertions(+), 77 deletions(-)
diff -puN drivers/usb/host/xhci-mem.c~xhci-fix
_head cmd_list;
>> unsigned intcmd_ring_reserved_trbs;
>> struct delayed_work cmd_timer;
>> +struct completion stop_completion;
>
> Tiny thing, but maybe change stop_completion to
> cmd_ring_stop_completion. to avoid mixing it with stopping host
> controller, stop endpoint, stop device etc
OK.
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operation]
Signed-off-by: OGAWA Hirofumi
---
drivers/usb/host/xhci-mem.c |1
drivers/usb/host/xhci-ring.c | 162 ++
drivers/usb/host/xhci.h |1
3 files changed, 87 insertions(+), 77 deletions(-)
diff -puN drivers/usb/host/xhci-mem.c~xhci-fix
Felipe Balbi writes:
> Hi,
Hi,
> OGAWA Hirofumi writes:
>> diff -puN drivers/usb/host/xhci-ring.c~xhci-fix-abort-race2
>> drivers/usb/host/xhci-ring.c
>> --- xhci/drivers/usb/host/xhci-ring.c~xhci-fix-abort-race2 2016-11-16
>> 13:36:07.219329211 +0900
>>
ptr);
/* check result */
udelay(1); <= meaningless delay
return -ETIMEDOUT;
Instead of above, this changes to do
result = readl(ptr);
/* check result */
udelay(1);
result = readl(ptr);
/* check result */
return -ETIMEDOUT;
Signed-off-by: OGAWA Hi
operation]
Signed-off-by: OGAWA Hirofumi
---
drivers/usb/host/xhci-mem.c |1
drivers/usb/host/xhci-ring.c | 163 ++
drivers/usb/host/xhci.h |1
3 files changed, 88 insertions(+), 77 deletions(-)
diff -puN drivers/usb/host/xhci-mem.c~xhci-fix
This is preparation to fix abort operation race (See "xhci: Fix race
related to abort operation"). To make timeout sleepable, use
delayed_work instead of timer.
Signed-off-by: OGAWA Hirofumi
---
drivers/usb/host/xhci-mem.c |7 +++
drivers/usb/host/xhci-rin
Mathias Nyman writes:
>> OGAWA Hirofumi writes:
>>> If race with timeout or stop event on empty cmd_list was happened,
>>> handle_cmd_completion() deferences wrong pointer from xhci->cmd_list.
>>>
>>> So this makes sure we don't deref
If race with timeout or stop event on empty cmd_list was happened,
handle_cmd_completion() deferences wrong pointer from xhci->cmd_list.
So this makes sure we don't dereference wrong pointer from empty
xhci->cmd_list.
Signed-off-by: OGAWA Hirofumi
---
drivers/usb/host/xhci-ri
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