lists.openwall.net   lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  linux-hardening  linux-cve-announce  PHC 
Open Source and information security mailing list archives
 
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-ID: <4E02BEFB.2030508@gmail.com>
Date:	Wed, 22 Jun 2011 21:20:11 -0700
From:	Dirk Brandewie <dirk.brandewie@...il.com>
To:	Grant Likely <grant.likely@...retlab.ca>
CC:	linux-kernel@...r.kernel.org,
	spi-devel-general@...ts.sourceforge.net
Subject: Re: [PATCH 08/11] spi-dw: Ensure fifo lenght is set.

On 06/22/2011 08:55 PM, Grant Likely wrote:
> On Wed, Jun 22, 2011 at 8:00 PM,<dirk.brandewie@...il.com>  wrote:
>> From: Dirk Brandewie<dirk.brandewie@...il.com>
>>
>> Bug on fifo_len not being set.  The fifo sizing routine does not work
>> since the txfltr register can not be written while the controller is
>> enabled. The max value of txfltr can be larger than the fifo.  The
>> register allows values upto 0x3f (63) the fifo depth on the Intel
>> SOC's if 40
>>
>> Signed-off-by: Dirk Brandewie<dirk.brandewie@...il.com>
>> ---
>>   drivers/spi/spi-dw.c |   18 ++----------------
>>   1 files changed, 2 insertions(+), 16 deletions(-)
>>
>> diff --git a/drivers/spi/spi-dw.c b/drivers/spi/spi-dw.c
>> index ad92826..cc38aa0 100644
>> --- a/drivers/spi/spi-dw.c
>> +++ b/drivers/spi/spi-dw.c
>> @@ -776,25 +776,11 @@ static int destroy_queue(struct spi_dw *dws)
>>   /* Restart the controller, disable all interrupts, clean rx fifo */
>>   static void spi_dw_hw_init(struct spi_dw *dws)
>>   {
>> +       BUG_ON(!dws->fifo_len);
>> +
>
> Ditto here.  BUG is too big a reaction.  Fail to initialize the
> device, sure, and print a warning, but don't BUG.

Ack,  I was trying to make sure the bug got caught while I was working towards 
getting the rest of my changes in.

--Dirk

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

Powered by blists - more mailing lists

Powered by Openwall GNU/*/Linux Powered by OpenVZ