Hi
02.11.2013, 20:59, "Michal Nazarewicz" :
>> Argh, why would we just don't do that? Its in-memory field, it can be
>> anything, I wouldn't be surprised if it even can be non-atomic because
>> of proper locks already being held
>
> If the driver does not require an atomic set_bit operation for
> 01.11.2013, 23:30, "Andrew Morton" :
>> set_bit() operates on longs. So if we do
>>
>> struct foo { u32 a; u32 b; } f;
>> set_bit(0, (long *)&f.a);
>>
>> then we'll scribble on f.b on a big-endian 64-bit machine.
On Sat, Nov 02 2013, Рустафа Джамурахметов wrote:
> Argh, why would we just don't
Hi
01.11.2013, 23:30, "Andrew Morton" :
> set_bit() operates on longs. So if we do
>
> struct foo {
> u32 a;
> u32 b;
> } f;
>
> ...
> set_bit(0, (long *)&f.a);
> ...
>
> then we'll scribble on f.b on a big-endian 64-bit machine.
Argh, why would we just d
On Fri, 01 Nov 2013 20:01:39 +0400 Evgeniy Polyakov wrote:
> > Now that I look at documentation, I think you are correct, but the
> > problem is on big-endian 64-bit architectures. __The fix is still
> > valid, but the commit message not so much. __Something along the
> > lines of the following w
Hi everyone
31.10.2013, 13:12, "Michal Nazarewicz" :
>>> int ttl;
>> ... w1_slave.ttl?
For noisy lines this was a 'timeout' after which system considered attached
device as failed, the noisier line is the longer is timeout
I experimented with meters-long w1 wires and it required seve
On Wed, Oct 30 2013, Andrew Morton wrote:
> On Sat, 26 Oct 2013 12:56:11 +0100 Michal Nazarewicz wrote:
>
>> From: Michal Nazarewicz
>>
>> Changing flags field of the w1_slave to unsigned long may on
>> some architectures increase the size of the structure, but
>> otherwise makes the code more k
On Sat, 26 Oct 2013 12:56:11 +0100 Michal Nazarewicz wrote:
> From: Michal Nazarewicz
>
> Changing flags field of the w1_slave to unsigned long may on
> some architectures increase the size of the structure, but
> otherwise makes the code more kosher as casting is avoided
> and *_bit family of
From: Michal Nazarewicz
Changing flags field of the w1_slave to unsigned long may on
some architectures increase the size of the structure, but
otherwise makes the code more kosher as casting is avoided
and *_bit family of calls do not attempt to operate on an
entity of bigger size than realy is
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