From: Dirk Brandewie <dirk.brandewie@gmail.com>
To: Grant Likely <grant.likely@secretlab.ca>
Cc: linux-kernel@vger.kernel.org, spi-devel-general@lists.sourceforge.net
Subject: Re: [PATCH 08/11] spi-dw: Ensure fifo lenght is set.
Date: Wed, 22 Jun 2011 21:20:11 -0700 [thread overview]
Message-ID: <4E02BEFB.2030508@gmail.com> (raw)
In-Reply-To: <BANLkTi=Jv2aVuHqVXh77aGxMFV_Q_wXQCg@mail.gmail.com>
On 06/22/2011 08:55 PM, Grant Likely wrote:
> On Wed, Jun 22, 2011 at 8:00 PM,<dirk.brandewie@gmail.com> wrote:
>> From: Dirk Brandewie<dirk.brandewie@gmail.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@gmail.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
next prev parent reply other threads:[~2011-06-23 4:20 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-06-23 2:00 [PATCH 00/11] RFC spi-dw updates dirk.brandewie
2011-06-23 2:00 ` [PATCH 01/11] spi-dw: expose platform data stucture dirk.brandewie
2011-06-23 3:47 ` Grant Likely
2011-06-23 4:00 ` Dirk Brandewie
2011-06-23 4:03 ` glikely@secretlab.ca
2011-06-23 4:37 ` Dirk Brandewie
2011-06-23 5:06 ` glikely@secretlab.ca
2011-06-23 5:16 ` Dirk Brandewie
[not found] ` <1308794413-11069-1-git-send-email-dirk.brandewie-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2011-06-23 2:00 ` [PATCH 02/11] spi-dw: update function naming convention to match file naming dirk.brandewie-Re5JQEeQqe8AvxtiuMwx3w
2011-06-23 2:00 ` [PATCH 03/11] spi-dw: change MRST prefix to generic prefix dirk.brandewie-Re5JQEeQqe8AvxtiuMwx3w
2011-06-23 2:00 ` [PATCH 04/11] spi-dw: remove unused definition dirk.brandewie-Re5JQEeQqe8AvxtiuMwx3w
2011-06-23 2:00 ` [PATCH 05/11] spi-dw: split spi_dw_enable_chip() into spi_dw_enable()/spi_dw_disable() dirk.brandewie-Re5JQEeQqe8AvxtiuMwx3w
2011-06-23 2:00 ` [PATCH 06/11] spi-dw: Force error on out of range chip select dirk.brandewie-Re5JQEeQqe8AvxtiuMwx3w
2011-06-23 3:51 ` Grant Likely
2011-06-23 4:13 ` Dirk Brandewie
2011-06-23 2:00 ` [PATCH 07/11] spi-dw: Set number of available chip selects correctly dirk.brandewie-Re5JQEeQqe8AvxtiuMwx3w
2011-06-23 3:53 ` Grant Likely
2011-06-23 2:00 ` [PATCH 08/11] spi-dw: Ensure fifo lenght is set dirk.brandewie-Re5JQEeQqe8AvxtiuMwx3w
2011-06-23 2:41 ` Feng Tang
2011-06-23 3:01 ` Dirk Brandewie
2011-06-23 3:21 ` Feng Tang
2011-06-23 3:55 ` Grant Likely
2011-06-23 4:20 ` Dirk Brandewie [this message]
2011-06-23 2:00 ` [PATCH 09/11] spi-dw: Fix condition in spi_dw_{writer/reader} dirk.brandewie-Re5JQEeQqe8AvxtiuMwx3w
2011-06-23 2:45 ` Feng Tang
2011-06-23 3:09 ` Dirk Brandewie
2011-06-23 3:25 ` Feng Tang
2011-06-23 3:30 ` Dirk Brandewie
2011-06-23 5:09 ` Feng Tang
2011-06-23 2:00 ` [PATCH 11/11] spi-dw: remove noop else clause dirk.brandewie-Re5JQEeQqe8AvxtiuMwx3w
2011-06-23 2:47 ` Feng Tang
2011-06-23 3:13 ` Dirk Brandewie
2011-06-23 2:00 ` [PATCH 10/11] spi-dw: Move checking of max_speed_hz value to be a prerequisite in spi_dw_setup dirk.brandewie
2011-06-23 2:39 ` [PATCH 00/11] RFC spi-dw updates Feng Tang
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