My Lenovo P50 laptop has a BIOS option to disable the microphone. When
this option gets chosen, the snd_hda_intel driver causes high CPU load on
a single kworker thread, spinning on "process_unsol_events", and system
instability. This behavior occurs from the time that the snd_hda_intel
module i
On Mon, 26 Nov 2018, Takashi Iwai wrote:
On Mon, 26 Nov 2018 00:17:15 +0100,
Alexander Kappner wrote:
My Lenovo P50 laptop has a BIOS option to disable the microphone. When
this option gets chosen, the snd_hda_intel driver causes high CPU load
on a single kworker thread, spinning on
if (us->fflags & US_FL_NO_WP_DETECT)
sdev->skip_ms_page_3f = 1;
--agk
On 05/16/2018 01:55 PM, Alan Stern wrote:
> On Wed, 16 May 2018, Alexander Kappner wrote:
>
>> The "G-Drive" (sold by G-Technology) external USB 3.0 drive
>&
t; Am Donnerstag, den 17.05.2018, 01:15 -0700 schrieb Alexander Kappner:
>> Yes. Without this flag, the device keeps throwing similar errors on
>> usb-storage. That's the same result I get on a host that doesn't have UAS
>> compiled in. Here's a dmesg:
>
> Hi,
ces in unusual_uas.h that currently have all UAS
support disabled. I'd be happy to write the patch, but I'm not sure we want
to reserve a quirk bit for what's currently only a single device known to
have this issue. Please advise.
On 05/17/2018 12:13 PM, Alan Stern wrote:
> O
On Wed, 5 Dec 2018, Takashi Iwai wrote:
On Sat, 01 Dec 2018 20:33:16 +0100,
Alexander Kappner wrote:
On Tue, 27 Nov 2018, Takashi Iwai wrote:
On Tue, 27 Nov 2018 06:34:02 +0100,
Alexander Kappner wrote:
On Mon, 26 Nov 2018, Takashi Iwai wrote:
On Mon, 26 Nov 2018 00:17:15 +0100
Andy: Thanks for pushing, and for the pointers regarding formalities; I'll keep
those in mind.
Also, it would be great if someone could test the fan reporting on a P70
Thinkpad (which has the same fan configuration as my P50 and thus likely needs
the same quirk).
Best
Alexander Ka
egister RPMB bus type
Steps to reproduce:
Build with CONFIG_MMC_BLOCK=m
modprobe mmc_block
rmmod mmc_block
modprobe mmc_block
The proposed patch deallocates the reference in mmc_blk_exit.
Signed-off-by: Alexander Kappner
---
drivers/mmc/core/block.c | 1 +
1 file changed, 1 insertion(+)
diff --g
eceive the quirk. With the patch, the drive works reliably
(tested on NEC Corporation uPD720200 USB 3.0 host controller).
Signed-off-by: Alexander Kappner
---
drivers/usb/storage/unusual_devs.h | 8
1 file changed, 8 insertions(+)
diff --git a/drivers/usb/storage/unusual_devs.h
b/d
The ALWAYS_SYNC flag is currently honored by the usb-storage driver but not UAS
and is required to work around devices that become unstable upon being
queried for cache. This code is taken straight from:
drivers/usb/storage/scsiglue.c:284
Signed-off-by: Alexander Kappner
---
drivers/usb/storage
s compiled without UAS
receive the quirk. With the patch, the drive works reliably on UAS and usb-
storage.
(tested on NEC Corporation uPD720200 USB 3.0 host controller).
Signed-off-by: Alexander Kappner
---
drivers/usb/storage/unusual_devs.h | 9 +
drivers/usb/storage/unusual_
v2 of this patch implements the FL_ALWAYS_SYNC flag in the UAS driver, and then
adds the flag as quirks for the device at issue. This allows the G-Drive to work
under both UAS and usb-storage.
Alexander Kappner (2):
[usb-storage] Add support for FL_ALWAYS_SYNC flag in the UAS driver
[usb
The Thinkpad P50 has 2 fans. Add the 2FAN quirk so the tpacpi driver
properly reports both fan speeds.
Because the P50 doesn't report the version of its EC controller, we need to
identify it by BIOS version (N1).
Signed-off-by: Alexander Kappner
---
drivers/platform/x86/thinkpad_acpi.
> Better of course to use three letters, though let's leave this when we
> really have a need.
Agreed; ideally we'd use a bitmask.
On 04/02/2018 12:08 PM, Henrique de Moraes Holschuh wrote:
> On Mon, 02 Apr 2018, Alexander Kappner wrote:
>> The Thinkpad P50 has 2 fans. Add
Commit 5b24a7a2aa2040c8c50c3b71122901d01661ff78 introduced the
unsafe_get_user and unsafe_put_user replacement functions for batched calls
to put_user and get_user. I'm trying to make the kernel smaller and reduce
stac/clac overhead on x86 by substituting the new functions for such
batched call
. This patch
successfully enables APST on both Samsung disks.
This patch also introduces an additional sanity check on the NPSS to mitigate
the risk of force-enabling APST on disks that genuinely do not support it.
Signed-off-by: Alexander Kappner
---
drivers/nvme/host/core.c | 25
4d 8d 2c ee
<49> 83 7d 28 00 74 0b 5b 5d 41 5c 41 5d 41 5e 41 5f c3 48 8b 3d
[63953.758202] RIP: xhci_debugfs_create_endpoint+0x1d/0xa0 RSP:
c9000a8efc80
[63953.758203] CR2: 0040
[63953.758204] ---[ end trace 1f7ea9a959f02054 ]---
Signed-off-by: Alexander Kappner
---
> (Added this as reply subject, please remember to send mail with
proper subject)
My apologies, thanks for fixing.
On 12/07/2017 04:47 AM, Mathias Nyman wrote:
On 07.12.2017 11:26, Alexander Kappner wrote:
Date: Wed, 6 Dec 2017 15:28:37 -0800
Subject: [PATCH] usb-core: Fix potential null poin
Hi Mathias,
thanks for the patch! The system now resumes cleanly from hibernate even
with usbmuxd doing its thing.
Tested-by: Alexander Kappner
While testing this I hit some other issues with xhci-debugfs.c but I'll
write these up in a separate bug.
On 12/08/2017 09:01 AM, Mathias
ixes this issue by storing a pointer to the xhci_ring
field in the xhci device structure in debugfs rather than directly
storing a pointer to the xhci_ring.
Signed-off-by: Alexander Kappner
---
drivers/usb/host/xhci-debugfs.c | 16
1 file changed, 8 insertions(+), 8 deletions
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