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RE: [RFC 1/8] serial:st-asc: Add ST ASC driver.

Stephen GALLIMORE — Thu, 23 May 2013 18:30:01 +0200

On Wednesday 22 May 2013, Arnd Bergmann wrote:
> > Also all of the custom_divisor functionality is basically commented as "old"
> > or has a kernel warning saying it is deprecated (see uart_set_info), so as
> > far as I can see for our (and I suspect most) hardware it is completely
> > irrelevant functionality.
>
> What may have happened here is that custom_divisor was used in a different
> way when I added that code than it is today, and the change was not propagated
> into the of_serial driver. However, going back to 2.6.20 shows no different
> code than what we have today in this regard. It may simply have been
> a mistake on my side.

Thanks for looking into this and digging around in the history. At least I didn't
miss something really obvious.

> I looked it up in the original serial port binding at
> http://www.openfirmware.org/1275/bindings/devices/html/serial.ht
> ml, which does
> not specify the property, and in ePAPR, which does have it in the
> section about
> "serial class devices":
>
> 18 6.2.1.2 current-speed
> 19 Property: current-speed
> 20 Value type:
> 21 Description:
> 22 Specifies the current speed of a serial device in bits per second. A
> boot program should set
> 23 this property if it has initialized the serial device.
> 24 Example:
> 25 current - speed = <115200>; # 115200 baud
>
> The reason you want this is so that the driver can initialize the hardware from
> scratch more easily and get back to the same settings. Why they only specified
> the baud rate but not also start/stop bits and flow control I don't understand
> though.

Yes, I had been made aware of the ePAPR definition by Srini after I sent the post.
In fact I had exactly the same question in my head about the other settings as
well.

>
> I guess you can ignore my original comment.
>
OK.

Thanks again for your time.

Regards,
-stephen
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Re: [GIT PULL] KVM fixes for 3.10-rc2

Linus Torvalds — Thu, 23 May 2013 18:30:01 +0200

On Thu, May 23, 2013 at 3:41 AM, Gleb Natapov wrote:
>
> MAINTAINERS | 7 ++--
> arch/mips/include/asm/kvm.h | 55 ---------------------------------------
> arch/mips/include/uapi/asm/kvm.h | 55 +++++++++++++++++++++++++++++++++++++++
> arch/mips/kvm/kvm_tlb.c | 35 ++++++++++++++++++------
> 4 files changed, 85 insertions(+), 67 deletions(-)

This was wrong. Please make sure you use the "-M" flag to make git
diff look for file renames, and the "--summary" flag to show metadata
changes separately.

IOW, it *should* have looked like this:

MAINTAINERS | 7 ++++---
arch/mips/include/{ => uapi}/asm/kvm.h | 0
arch/mips/kvm/kvm_tlb.c | 35 ++++++++++++++++++++++++++---------
3 files changed, 30 insertions(+), 12 deletions(-)
rename arch/mips/include/{ => uapi}/asm/kvm.h (100%)

Thanks,

Linus
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[git pull] Input updates for 3.10-rc2

Dmitry Torokhov — Thu, 23 May 2013 18:20:03 +0200

Hi Linus,

Please pull from:

git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input.git for-linus
or
master.kernel.org:/pub/scm/linux/kernel/git/dtor/input.git for-linus

to receive updates for the input subsystem. You will get a few fixups to
Wacom and eGalax touchscreen driver.

Changelog:
---------

Heiko Abraham (1):
Input: egalax_ts - ABS_MT_POSITION_Y not reported well

Ping Cheng (3):
Input: wacom - add three new display tablets
Input: wacom - add a few new styli for Cintiq series
Input: wacom - add an eraser to DTH2242/DTK2241

Diffstat:
--------

drivers/input/tablet/wacom_wac.c | 89 ++++++++++++++++++++++++++---------
drivers/input/tablet/wacom_wac.h | 1 +
drivers/input/touchscreen/egalax_ts.c | 2 +-
3 files changed, 69 insertions(+), 23 deletions(-)

--
Dmitry

[GIT PATCH] TTY/Serial fixes for 3.10-rc3

Greg KH — Thu, 23 May 2013 18:20:03 +0200

[GIT PATCH] Staging driver fixes for 3.10-rc3