Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]


Groups > linux.kernel > #1619002 > unrolled thread

Re: [PATCH 1/1] memory: tegra: fix fdc test bug

Started byThierry Reding <thierry.reding@gmail.com>
First post2017-04-07 19:50 +0200
Last post2017-04-08 00:00 +0200
Articles 2 — 2 participants

Back to article view | Back to linux.kernel

This discussion starts older than the indexed window; earlier articles aren't shown. The article labeled Started by below is the oldest one visible, not the original post.


Contents

  Re: [PATCH 1/1] memory: tegra: fix fdc test bug Thierry Reding <thierry.reding@gmail.com> - 2017-04-07 19:50 +0200
    Re: [PATCH 1/1] memory: tegra: fix fdc test bug Ben Dooks <ben.dooks@codethink.co.uk> - 2017-04-08 00:00 +0200

#1619002 — Re: [PATCH 1/1] memory: tegra: fix fdc test bug

FromThierry Reding <thierry.reding@gmail.com>
Date2017-04-07 19:50 +0200
SubjectRe: [PATCH 1/1] memory: tegra: fix fdc test bug
Message-ID<ttGbg-21h-9@gated-at.bofh.it>

[Multipart message — attachments visible in raw view] — view raw

On Fri, Apr 07, 2017 at 06:28:20PM +0100, Ben Dooks wrote:
> The fdc variable is a bool, taking the address of this will generally
> produce true, thus skewing any users of the tegra_mc_set_latency_allowance
> code.
> 
> Note, this does not seem to be producing a compiler warning. This was only
> spotted as it meant a caller was seeing 3 times higher than expected
> register results.
> 
> Signed-off-by: Ben Dooks <ben.dooks@codethink.co.uk>
> ---
>  drivers/memory/tegra/mc.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)

What tree is this based on? I don't see this code anywhere in mainline.

Thierry

[toc] | [next] | [standalone]


#1619133

FromBen Dooks <ben.dooks@codethink.co.uk>
Date2017-04-08 00:00 +0200
Message-ID<ttK5b-4R7-13@gated-at.bofh.it>
In reply to#1619002
On 2017-04-07 18:43, Thierry Reding wrote:
> On Fri, Apr 07, 2017 at 06:28:20PM +0100, Ben Dooks wrote:
>> The fdc variable is a bool, taking the address of this will generally
>> produce true, thus skewing any users of the 
>> tegra_mc_set_latency_allowance
>> code.
>> 
>> Note, this does not seem to be producing a compiler warning. This was 
>> only
>> spotted as it meant a caller was seeing 3 times higher than expected
>> register results.
>> 
>> Signed-off-by: Ben Dooks <ben.dooks@codethink.co.uk>
>> ---
>>  drivers/memory/tegra/mc.c | 2 +-
>>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> What tree is this based on? I don't see this code anywhere in mainline.

Apologies, turns out this a vendor added function.

-- 
Ben

[toc] | [prev] | [standalone]


Back to top | Article view | linux.kernel


csiph-web