2017-03-13 13:33:34

by William Breathitt Gray

[permalink] [raw]
Subject: Re: [PATCH] iio: 104-quad-8: Fix off-by-one error when addressing flag register

On Sat, Feb 11, 2017 at 09:37:35AM +0000, Jonathan Cameron wrote:
>On 09/02/17 15:03, William Breathitt Gray wrote:
>> The flag register is offset by 1 from the respective channel data
>> register. This patch fixes an off-by-one error when attempting to read a
>> channel flag register where the base address was not properly offset.
>>
>> Fixes: 28e5d3bb0325 ("iio: 104-quad-8: Add IIO support for the ACCES 104-QUAD-8")
>> Signed-off-by: William Breathitt Gray <[email protected]>
>Applied to the fixes-togreg-post-rc1 branch of iio.git
>Clue to when this will go upstream is in the name ;)
>
>Thanks,
>
>Jonathan

Hi Jonathan,

I see that this fix made it into 4.11-rc1 but not the 4.10.2 release.
Is this patch on track to appear in stable, or should I explicitly CC
[email protected] to pick this up?

Thanks,

William Breathitt Gray

>> ---
>> drivers/iio/counter/104-quad-8.c | 2 +-
>> 1 file changed, 1 insertion(+), 1 deletion(-)
>>
>> diff --git a/drivers/iio/counter/104-quad-8.c b/drivers/iio/counter/104-quad-8.c
>> index a5913e97945e..f9b8fc9ae13f 100644
>> --- a/drivers/iio/counter/104-quad-8.c
>> +++ b/drivers/iio/counter/104-quad-8.c
>> @@ -76,7 +76,7 @@ static int quad8_read_raw(struct iio_dev *indio_dev,
>> return IIO_VAL_INT;
>> }
>>
>> - flags = inb(base_offset);
>> + flags = inb(base_offset + 1);
>> borrow = flags & BIT(0);
>> carry = !!(flags & BIT(1));
>>
>>


2017-03-13 21:33:57

by Jonathan Cameron

[permalink] [raw]
Subject: Re: [PATCH] iio: 104-quad-8: Fix off-by-one error when addressing flag register

On 13/03/17 13:33, William Breathitt Gray wrote:
> On Sat, Feb 11, 2017 at 09:37:35AM +0000, Jonathan Cameron wrote:
>> On 09/02/17 15:03, William Breathitt Gray wrote:
>>> The flag register is offset by 1 from the respective channel data
>>> register. This patch fixes an off-by-one error when attempting to read a
>>> channel flag register where the base address was not properly offset.
>>>
>>> Fixes: 28e5d3bb0325 ("iio: 104-quad-8: Add IIO support for the ACCES 104-QUAD-8")
>>> Signed-off-by: William Breathitt Gray <[email protected]>
>> Applied to the fixes-togreg-post-rc1 branch of iio.git
>> Clue to when this will go upstream is in the name ;)
>>
>> Thanks,
>>
>> Jonathan
>
> Hi Jonathan,
>
> I see that this fix made it into 4.11-rc1 but not the 4.10.2 release.
> Is this patch on track to appear in stable, or should I explicitly CC
> [email protected] to pick this up?
I was half asleep and failed to tag this in the first place.

Send an email to [email protected] with the commit ID and a request
that it is picked up. Cc me.

Jonathan
>
> Thanks,
>
> William Breathitt Gray
>
>>> ---
>>> drivers/iio/counter/104-quad-8.c | 2 +-
>>> 1 file changed, 1 insertion(+), 1 deletion(-)
>>>
>>> diff --git a/drivers/iio/counter/104-quad-8.c b/drivers/iio/counter/104-quad-8.c
>>> index a5913e97945e..f9b8fc9ae13f 100644
>>> --- a/drivers/iio/counter/104-quad-8.c
>>> +++ b/drivers/iio/counter/104-quad-8.c
>>> @@ -76,7 +76,7 @@ static int quad8_read_raw(struct iio_dev *indio_dev,
>>> return IIO_VAL_INT;
>>> }
>>>
>>> - flags = inb(base_offset);
>>> + flags = inb(base_offset + 1);
>>> borrow = flags & BIT(0);
>>> carry = !!(flags & BIT(1));
>>>
>>>
> --
> To unsubscribe from this list: send the line "unsubscribe linux-iio" in
> the body of a message to [email protected]
> More majordomo info at http://vger.kernel.org/majordomo-info.html
>

2017-03-14 15:00:57

by William Breathitt Gray

[permalink] [raw]
Subject: Re: [PATCH] iio: 104-quad-8: Fix off-by-one error when addressing flag register

On Mon, Mar 13, 2017 at 09:33:45PM +0000, Jonathan Cameron wrote:
>On 13/03/17 13:33, William Breathitt Gray wrote:
>> On Sat, Feb 11, 2017 at 09:37:35AM +0000, Jonathan Cameron wrote:
>>> On 09/02/17 15:03, William Breathitt Gray wrote:
>>>> The flag register is offset by 1 from the respective channel data
>>>> register. This patch fixes an off-by-one error when attempting to read a
>>>> channel flag register where the base address was not properly offset.
>>>>
>>>> Fixes: 28e5d3bb0325 ("iio: 104-quad-8: Add IIO support for the ACCES 104-QUAD-8")
>>>> Signed-off-by: William Breathitt Gray <[email protected]>
>>> Applied to the fixes-togreg-post-rc1 branch of iio.git
>>> Clue to when this will go upstream is in the name ;)
>>>
>>> Thanks,
>>>
>>> Jonathan
>>
>> Hi Jonathan,
>>
>> I see that this fix made it into 4.11-rc1 but not the 4.10.2 release.
>> Is this patch on track to appear in stable, or should I explicitly CC
>> [email protected] to pick this up?
>I was half asleep and failed to tag this in the first place.
>
>Send an email to [email protected] with the commit ID and a request
>that it is picked up. Cc me.
>
>Jonathan
>>
>> Thanks,
>>
>> William Breathitt Gray
>>

Hello,

This patch was merged into Linus' tree as commit ca8d8e03b4c9 ("iio:
104-quad-8: Fix off-by-one error when addressing flag register"). This
fix should be merged into the 4.10 stable tree as well to fix an
off-by-one error which causes garbage data to be read as count values --
effectively preventing proper usage of the driver.

This patch fixes commit 28e5d3bb0325 ("iio: 104-quad-8: Add IIO support
for the ACCES 104-QUAD-8").

Thank you,

William Breathitt Gray

>>>> ---
>>>> drivers/iio/counter/104-quad-8.c | 2 +-
>>>> 1 file changed, 1 insertion(+), 1 deletion(-)
>>>>
>>>> diff --git a/drivers/iio/counter/104-quad-8.c b/drivers/iio/counter/104-quad-8.c
>>>> index a5913e97945e..f9b8fc9ae13f 100644
>>>> --- a/drivers/iio/counter/104-quad-8.c
>>>> +++ b/drivers/iio/counter/104-quad-8.c
>>>> @@ -76,7 +76,7 @@ static int quad8_read_raw(struct iio_dev *indio_dev,
>>>> return IIO_VAL_INT;
>>>> }
>>>>
>>>> - flags = inb(base_offset);
>>>> + flags = inb(base_offset + 1);
>>>> borrow = flags & BIT(0);
>>>> carry = !!(flags & BIT(1));
>>>>
>>>>
>> --
>> To unsubscribe from this list: send the line "unsubscribe linux-iio" in
>> the body of a message to [email protected]
>> More majordomo info at http://vger.kernel.org/majordomo-info.html
>>
>

2017-03-15 05:33:30

by Greg Kroah-Hartman

[permalink] [raw]
Subject: Re: [PATCH] iio: 104-quad-8: Fix off-by-one error when addressing flag register

On Tue, Mar 14, 2017 at 11:00:43AM -0400, William Breathitt Gray wrote:
> On Mon, Mar 13, 2017 at 09:33:45PM +0000, Jonathan Cameron wrote:
> >On 13/03/17 13:33, William Breathitt Gray wrote:
> >> On Sat, Feb 11, 2017 at 09:37:35AM +0000, Jonathan Cameron wrote:
> >>> On 09/02/17 15:03, William Breathitt Gray wrote:
> >>>> The flag register is offset by 1 from the respective channel data
> >>>> register. This patch fixes an off-by-one error when attempting to read a
> >>>> channel flag register where the base address was not properly offset.
> >>>>
> >>>> Fixes: 28e5d3bb0325 ("iio: 104-quad-8: Add IIO support for the ACCES 104-QUAD-8")
> >>>> Signed-off-by: William Breathitt Gray <[email protected]>
> >>> Applied to the fixes-togreg-post-rc1 branch of iio.git
> >>> Clue to when this will go upstream is in the name ;)
> >>>
> >>> Thanks,
> >>>
> >>> Jonathan
> >>
> >> Hi Jonathan,
> >>
> >> I see that this fix made it into 4.11-rc1 but not the 4.10.2 release.
> >> Is this patch on track to appear in stable, or should I explicitly CC
> >> [email protected] to pick this up?
> >I was half asleep and failed to tag this in the first place.
> >
> >Send an email to [email protected] with the commit ID and a request
> >that it is picked up. Cc me.
> >
> >Jonathan
> >>
> >> Thanks,
> >>
> >> William Breathitt Gray
> >>
>
> Hello,
>
> This patch was merged into Linus' tree as commit ca8d8e03b4c9 ("iio:
> 104-quad-8: Fix off-by-one error when addressing flag register"). This
> fix should be merged into the 4.10 stable tree as well to fix an
> off-by-one error which causes garbage data to be read as count values --
> effectively preventing proper usage of the driver.
>
> This patch fixes commit 28e5d3bb0325 ("iio: 104-quad-8: Add IIO support
> for the ACCES 104-QUAD-8").

Now queued up, thanks.

greg k-h