Add information regarding lifespan of kref protection:
Clarify comment on kref_get for interrupt in urb in usbtmc_probe()
Add comment on kref_get in usbtmc_open()
Fix endpoint reference in documentation for send_request_dev_dep_msg_in()
Signed-off-by: Dave Penkler <dpenk...@gmail.
On Wed, Sep 28, 2016 at 12:29:35PM +0200, Ladislav Michl wrote:
> On Wed, Sep 28, 2016 at 11:45:02AM +0200, Greg Kroah-Hartman wrote:
> > If it is freed, why is a read even able to happen? Ah, ick, no proper
> > reference counting is happening here :(
> >
> > Oh, no, wait, it is happening
e.com>
Signed-off-by: Dave Penkler <dpenk...@gmail.com>
---
drivers/usb/class/usbtmc.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/usb/class/usbtmc.c b/drivers/usb/class/usbtmc.c
index 419c72e..917a55c 100644
--- a/drivers/usb/class/usbtmc.c
+++ b/driv
When the device is disconnected poll waiters were not being woken.
Fixes issue in commit eb6b92ecc0f9412623ab1584ddd8389b371638d4 reported
by Oliver Neukum
Signed-off-by: Dave Penkler <dpenk...@gmail.com>
---
drivers/usb/class/usbtmc.c | 3 ++-
1 file changed, 2 insertions(+), 1 de
Hi Clemens,
On Thu, Jan 28, 2016 at 09:46:59AM +0100, Clemens Ladisch wrote:
> Dave Penkler wrote:
> > Implement support for the USB488 defined READ_STATUS_BYTE ioctl (1/5)
> > and SRQ notifications with fasync (2/5) and poll/select (3/5) in order
> > to be able to sync
- simplify some expressions
v3 - Split into multiple patches as per gregkh request
V2 - Fix V1 bug: not waking sleepers on disconnect.
- Correct sparse warnings.
V1 - Original patch
Testing:
All functions tested ok on an USBTMC-USB488 compliant oscilloscope
Dave Penkler (5
This is a convenience function to obtain an instrument's
capabilities from its file descriptor without having to access sysfs
from the user program.
Signed-off-by: Dave Penkler <dpenk...@gmail.com>
---
drivers/usb/class/usbtmc.c | 12
include/uapi/linux/usb/tmc.
for the appropriate condition. This capability is referred to in
instrument application notes on synchronizing acquisitions for other
platforms.
Signed-off-by: Dave Penkler <dpenk...@gmail.com>
---
drivers/usb/class/usbtmc.c | 201 +++
include/uapi/linux/usb/tmc.h
Background:
In many situations operations on multiple instruments need to be
synchronized. poll/select provide a convenient way of waiting on a
number of different instruments and other peripherals
simultaneously.
Signed-off-by: Dave Penkler <dpenk...@gmail.com>
---
drivers/usb/class/us
These ioctls provide support for the USBTMC-USB488 control requests
for REN_CONTROL, GO_TO_LOCAL and LOCAL_LOCKOUT
Signed-off-by: Dave Penkler <dpenk...@gmail.com>
---
drivers/usb/class/usbtmc.c | 70
include/uapi/linux/usb/tmc.h | 6
2
On Sun, Jan 24, 2016 at 08:42:54PM -0800, Greg KH wrote:
> On Sun, Nov 29, 2015 at 01:35:51PM +0100, Dave Penkler wrote:
> > This is a convenience function to obtain an instrument's
> > capabilities from its file descriptor without having to access sysfs
> > from the user pro
for the appropriate condition. This capability is referred to in
instrument application notes on synchronizing acquisitions for other
platforms.
Signed-off-by: Dave Penkler <dpenk...@gmail.com>
---
drivers/usb/class/usbtmc.c | 200 +++
include/uapi/linux/usb/tmc.h
This is a convenience function to obtain an instrument's
capabilities from its file descriptor without having to access sysfs
from the user program.
Signed-off-by: Dave Penkler <dpenk...@gmail.com>
---
drivers/usb/class/usbtmc.c | 12
include/uapi/linux/usb/tmc.
These ioctls provide support for the USBTMC-USB488 control requests
for REN_CONTROL, GO_TO_LOCAL and LOCAL_LOCKOUT
Signed-off-by: Dave Penkler <dpenk...@gmail.com>
---
drivers/usb/class/usbtmc.c | 71
include/uapi/linux/usb/tmc.h | 6
2
- simplify some expressions
v3 - Split into multiple patches as per gregkh request
V2 - Fix V1 bug: not waking sleepers on disconnect.
- Correct sparse warnings.
V1 - Original patch
Testing:
All functions tested ok on an USBTMC-USB488 compliant oscilloscope
Dave Penkler
Background:
By configuring an instrument's event status register various
conditions can be reported via an SRQ notification. This complements
the synchronous polling approach using the READ_STATUS_BYTE ioctl
with an asynchronous notification.
Signed-off-by: Dave Penkler <dpenk...@gmail.
Background:
In many situations operations on multiple instruments need to be
synchronized. poll/select provide a convenient way of waiting on a
number of different instruments and other peripherals
simultaneously.
Signed-off-by: Dave Penkler <dpenk...@gmail.com>
---
drivers/usb/class/us
On Wed, Nov 25, 2015 at 10:38:39PM +0200, Andy Shevchenko wrote:
> On Wed, Nov 25, 2015 at 11:18 AM, Dave Penkler <dpenk...@gmail.com> wrote:
> > On Sun, Nov 22, 2015 at 12:32:41PM +0200, Andy Shevchenko wrote:
> >> On Sun, Nov 22, 2015 at 11:19 AM, Dave Penkler &l
On Sat, Nov 28, 2015 at 04:57:47PM +0200, Andy Shevchenko wrote:
> On Sat, Nov 28, 2015 at 1:55 PM, Dave Penkler <dpenk...@gmail.com> wrote:
> > On Wed, Nov 25, 2015 at 10:38:39PM +0200, Andy Shevchenko wrote:
> >> On Wed, Nov 25, 2015 at 11:18 AM, Dave Penkler &l
On Sun, Nov 22, 2015 at 12:36:53PM +0200, Andy Shevchenko wrote:
> On Sun, Nov 22, 2015 at 10:51 AM, Dave Penkler <dpenk...@gmail.com> wrote:
> > On Wed, Nov 18, 2015 at 11:41:30AM +0200, Andy Shevchenko wrote:
> >> On Wed, Nov 18, 2015 at 10:38 AM, Dave Penkler &l
On Sun, Nov 22, 2015 at 12:32:41PM +0200, Andy Shevchenko wrote:
> On Sun, Nov 22, 2015 at 11:19 AM, Dave Penkler <dpenk...@gmail.com> wrote:
> > On Wed, Nov 18, 2015 at 11:55:27AM +0200, Andy Shevchenko wrote:
> >> On Wed, Nov 18, 2015 at 10:37 AM, Dave Penkler &l
On Wed, Nov 18, 2015 at 11:41:30AM +0200, Andy Shevchenko wrote:
> On Wed, Nov 18, 2015 at 10:38 AM, Dave Penkler <dpenk...@gmail.com> wrote:
> > These ioctls provide support for the USBTMC-USB488 control requests
> > for REN_CONTROL, GO_TO_LOCAL and LOCAL_LOCKOUT
>
&g
On Wed, Nov 18, 2015 at 11:55:27AM +0200, Andy Shevchenko wrote:
> On Wed, Nov 18, 2015 at 10:37 AM, Dave Penkler <dpenk...@gmail.com> wrote:
> > Background:
> > When performing a read on an instrument that is executing a function
> > that runs longer than the USB time
On Sun, Nov 15, 2015 at 10:10:35PM +0200, Andy Shevchenko wrote:
> On Sun, Nov 15, 2015 at 8:40 PM, Dave Penkler <dpenk...@gmail.com> wrote:
> > These ioctls provide support for the USBTMC-USB488 control requests
> > for REN_CONTROL, GO_TO_LOCAL and LOCAL_LOCKOUT
> >
&g
Hi Andy,
On Sun, Nov 15, 2015 at 10:04:10PM +0200, Andy Shevchenko wrote:
> On Sun, Nov 15, 2015 at 8:39 PM, Dave Penkler <dpenk...@gmail.com> wrote:
snip
> > +
>
> Redundant empty line.
>
ok
>
> > + data->iin_bTag = 2;
>
> Hmm
Background:
In many situations operations on multiple instruments need to be
synchronized. poll/select provide a convenient way of waiting on a
number of different instruments and other peripherals
simultaneously.
Signed-off-by: Dave Penkler <dpenk...@gmail.com>
---
drivers/usb/class/us
This is a convenience function to obtain an instrument's
capabilities from its file descriptor without having to access sysfs
from the user program.
Signed-off-by: Dave Penkler <dpenk...@gmail.com>
---
drivers/usb/class/usbtmc.c | 12
include/uapi/linux/usb/tmc.
compliant oscilloscope
Dave Penkler (5):
Implement an ioctl to support the USMTMC-USB488 READ_STATUS_BYTE
operation.
Add support for USBTMC USB488 SRQ notification with fasync
Add support for receiving USBTMC USB488 SRQ notifications via
poll/select
Add ioctl to retrieve USBTMC-USB488
Background:
By configuring an instrument's event status register various
conditions can be reported via an SRQ notification. This complements
the synchronous polling approach using the READ_STATUS_BYTE ioctl
with an asynchronous notification.
Signed-off-by: Dave Penkler <dpenk...@gmail.
for the appropriate condition. This capability is referred to in
instrument application notes on synchronizing acquisitions for other
platforms.
Signed-off-by: Dave Penkler <dpenk...@gmail.com>
---
drivers/usb/class/usbtmc.c | 212 +++
include/uapi/linux/usb/tmc.h
These ioctls provide support for the USBTMC-USB488 control requests
for REN_CONTROL, GO_TO_LOCAL and LOCAL_LOCKOUT
Signed-off-by: Dave Penkler <dpenk...@gmail.com>
---
drivers/usb/class/usbtmc.c | 71
include/uapi/linux/usb/tmc.h | 6
2
for the appropriate condition. This capability is referred to in
instrument application notes on synchronizing acquisitions for other
platforms.
Signed-off-by: Dave Penkler <dpenk...@gmail.com>
---
drivers/usb/class/usbtmc.c | 219 +++
include/uapi/linux/usb/tmc.h
sleepers on disconnect.
- Correct sparse warnings.
V1 - Original patch
Testing:
All functions tested ok on an USBTMC-USB488 compliant oscilloscope
Dave Penkler (5):
Implement an ioctl to support the USMTMC-USB488 READ_STATUS_BYTE
operation.
Add support for USBTMC USB488 SRQ
These ioctls provide support for the USBTMC-USB488 control requests
for REN_CONTROL, GO_TO_LOCAL and LOCAL_LOCKOUT
Signed-off-by: Dave Penkler <dpenk...@gmail.com>
---
drivers/usb/class/usbtmc.c | 76
include/uapi/linux/usb/tmc.h | 6
2
Background:
By configuring an instrument's event status register various
conditions can be reported via an SRQ notification. This complements
the synchronous polling approach using the READ_STATUS_BYTE ioctl
with an asynchronous notification.
Signed-off-by: Dave Penkler <dpenk...@gmail.
Background:
In many situations operations on multiple instruments need to be
synchronized. poll/select provide a convenient way of waiting on a
number of different instruments and other peripherals
simultaneously.
Signed-off-by: Dave Penkler <dpenk...@gmail.com>
---
drivers/usb/class/us
This is a convenience function to obtain an instrument's
capabilities from its file descriptor without having to access sysfs
from the user program.
Signed-off-by: Dave Penkler <dpenk...@gmail.com>
---
drivers/usb/class/usbtmc.c | 12
include/uapi/linux/usb/tmc.
Hi Andy,
On Wed, Nov 11, 2015 at 09:36:41PM +0200, Andy Shevchenko wrote:
> On Wed, Nov 11, 2015 at 1:21 PM, Dave Penkler <dpenk...@gmail.com> wrote:
> > These ioctls provide support for the USBTMC-USB488 control requests
> > for REN_CONTROL, GO_TO_LOCAL an
for the appropriate
condition. This capability is refered to in instrument application notes
on synchronizing acquisitions for other platforms.
Signed-off-by: Dave Penkler <dpenk...@gmail.com>
---
drivers/usb/class/usbtmc.c | 223 +++
include/uapi/linux/usb/tmc.h |
Background:
By configuring an instrument's event status register various conditions
can be reported via an SRQ notification. This complements the synchronous
polling approach using the READ_STATUS_BYTE ioctl with an asynchronous
notification.
Signed-off-by: Dave Penkler <dpenk...@gmail.
Background:
In many situations operations on multiple instruments need to be
synchronized. poll/select provide a convenient way of waiting on a number
of different instruments and other peripherals simultaneously.
Signed-off-by: Dave Penkler <dpenk...@gmail.com>
---
drivers/usb/class/us
on an USBTMC-USB488 compliant oscilloscope
Dave Penkler (5):
Implement an ioctl to support the USMTMC-USB488 READ_STATUS_BYTE
operation.
Add support for USBTMC USB488 SRQ notification with fasync
Add support for receiving USBTMC USB488 SRQ notifications via
poll/select
Add ioctl
These ioctls provide support for the USBTMC-USB488 control requests
for REN_CONTROL, GO_TO_LOCAL and LOCAL_LOCKOUT
Signed-off-by: Dave Penkler <dpenk...@gmail.com>
---
drivers/usb/class/usbtmc.c | 76
include/uapi/linux/usb/tmc.h | 9 +++
This is a convenience function to obtain an instrument's capabilities
from its file descriptor without having to access sysfs from the user
program.
Signed-off-by: Dave Penkler <dpenk...@gmail.com>
---
drivers/usb/class/usbtmc.c | 12
include/uapi/linux/usb/tmc.
ioctl to return all device capabilities.
Fix PATCH V1 bug: not waking sleepers on disconnect.
Correct sparse warnings.
Signed-off-by: Dave Penkler <dpenk...@gmail.com>
---
drivers/usb/class/usbtmc.c | 359 +++
include/uapi/linux/usb/tmc.h | 42 ++
Hi Oliver,
On Wed, Oct 14, 2015 at 3:33 PM, Oliver Neukum <oneu...@suse.com> wrote:
> On Wed, 2015-10-14 at 15:13 +0200, dave penkler wrote:
>
> Hi,
>
> just a few remarks.
thank you.
>
>>
>> +static int usbtmc488_ioctl_read
ioctl to return all device capabilities.
Signed-off-by: Dave Penkler <dpenk...@gmail.com>
---
drivers/usb/class/usbtmc.c | 359 +++
include/uapi/linux/usb/tmc.h | 42 +++--
2 files changed, 391 insertions(+), 10 deletions(-)
diff --git a/drivers/usb
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