From: Christoph Hellwig <hch@lst.de>
To: Pontus Fuchs <pontus.fuchs@gmail.com>
Cc: Kalle Valo <kvalo@adurom.com>,
gregkh@linuxfoundation.org, linux-wireless@vger.kernel.org,
hch@lst.de, s.L-H@gmx.de
Subject: Re: [PATCH 2/4] ar5523: Add driver header file
Date: Sat, 13 Oct 2012 17:45:37 +0200 [thread overview]
Message-ID: <20121013154537.GC25810@lst.de> (raw)
In-Reply-To: <50793F05.7030604@gmail.com>
On Sat, Oct 13, 2012 at 12:14:29PM +0200, Pontus Fuchs wrote:
> On 2012-10-13 07:41, Kalle Valo wrote:
>> Pontus Fuchs <pontus.fuchs@gmail.com> writes:
>>
>>> +#define ar5523_err(ar, format, arg...) \
>>> +do { \
>>> + if (!test_bit(AR5523_USB_DISCONNECTED, &ar->flags)) { \
>>> + dev_err(&(ar)->dev->dev, format, ## arg); \
>>> + } \
>>> +} while (0)
>> This looks suspicious and might hide something important. It's better to
>> fix the real cause than to workaround it in the error log printer. Do
>> you know why this was added?
> Yes. The purpose is to hide all the USB errors that happens when you
> hot-unplug the dongle. There can be quite a few URBs in flight and
> all of them will fail with -ENODEV or -ESHUTDOWN. Instead of checking
> for these errors in all the usb submissions and callbacks I added this
> flag. Do you still a problem with this approach?
I think it's fine, but it needs a comment explaining it with basically
the same information you just wrote above.
next prev parent reply other threads:[~2012-10-13 15:45 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-10-11 20:01 [PATCH 0/4] Driver for the ar5523 chipset Pontus Fuchs
2012-10-11 20:01 ` [PATCH 1/4] ar5523: Add main driver file Pontus Fuchs
2012-10-15 20:54 ` Luis R. Rodriguez
2012-10-11 20:01 ` [PATCH 2/4] ar5523: Add driver header file Pontus Fuchs
2012-10-13 5:41 ` Kalle Valo
2012-10-13 10:14 ` Pontus Fuchs
2012-10-13 15:45 ` Christoph Hellwig [this message]
2012-10-21 19:58 ` Kalle Valo
2012-10-11 20:01 ` [PATCH 3/4] ar5523: Add Firmware API " Pontus Fuchs
2012-10-11 20:01 ` [PATCH 4/4] ar5523: Add Kconfig and Makefile Pontus Fuchs
2012-10-11 20:31 ` [PATCH 0/4] Driver for the ar5523 chipset Greg KH
2012-10-12 6:52 ` Pontus Fuchs
2012-10-12 7:28 ` Mohammed Shafi
2012-10-12 8:36 ` Pontus Fuchs
2012-10-12 8:23 ` Julian Calaby
2012-10-12 8:33 ` Pontus Fuchs
2012-10-12 11:45 ` Chadd, Adrian
2012-10-30 17:08 ` Adrian Chadd
2012-11-01 17:41 ` Pontus Fuchs
2012-10-12 7:11 ` Kalle Valo
2012-10-12 14:33 ` John W. Linville
2012-10-13 5:38 ` Kalle Valo
2012-10-13 10:25 ` Pontus Fuchs
2012-10-21 16:35 ` Kalle Valo
2012-10-13 15:41 ` Christoph Hellwig
2012-10-13 15:39 ` Christoph Hellwig
2012-10-22 22:43 ` Greg KH
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