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From: Maxim Levitsky <maximlevitsky@gmail.com>
To: Alex Dubov <oakad@yahoo.com>
Cc: LKML <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH 2/2] MEMSTICK: Add driver for Ricoh R5C592 Card reader.
Date: Wed, 04 Aug 2010 19:48:32 +0300	[thread overview]
Message-ID: <1280940512.16380.4.camel@maxim-laptop> (raw)
In-Reply-To: <441366.48179.qm@web37605.mail.mud.yahoo.com>

On Wed, 2010-08-04 at 00:57 -0700, Alex Dubov wrote: 
> I see two immediate problems with this patch:
> 
> 1. On cosmetic level, custom debug macros should not be employed. Device
> core already have this functionality (dynamic debug levels and such). Please,
> use dev_dbg and friends for print-outs.
This allows much easier control for debug.
Single module parameter is enough to adjust it.
This helps me help users.
(Eg, kernel compilation is out of question)


> 
> 2. On a structural level, I'd rather prefer host drivers to not start their
> own threads. If you look at both current host implementations, they operate
> in callback fashion. Apart from saving some resources, this reduces the
> amount of problems encountered during suspend/resume and shutdown.
This isn't possible.
Hardware doesn't support interrupts on memstick bus changes, it only
supports DMA done from/to internal FIFO, and DMA it only possible for
512 byte TPCs.


Best regards,
Maxim Levitsky


  reply	other threads:[~2010-08-04 16:48 UTC|newest]

Thread overview: 47+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-08-03 14:53 [PATCH 0/2] Driver for Ricoh cardreader Maxim Levitsky
2010-08-03 14:53 ` [PATCH 1/2] MEMSTICK: fix hangs on unexpected device removal in mspro_blk Maxim Levitsky
2010-08-04  7:50   ` Alex Dubov
2010-08-04 16:53     ` Maxim Levitsky
2010-08-04 21:41       ` Maxim Levitsky
2010-08-05  8:43         ` Alex Dubov
2010-08-05 17:48           ` Maxim Levitsky
2010-08-06  7:37             ` Alex Dubov
2010-08-03 14:53 ` [PATCH 2/2] MEMSTICK: Add driver for Ricoh R5C592 Card reader Maxim Levitsky
2010-08-04  7:57   ` Alex Dubov
2010-08-04 16:48     ` Maxim Levitsky [this message]
2010-08-04 19:31       ` Maxim Levitsky
2010-08-05  8:30 Alex Dubov
2010-08-05 11:20 ` Maxim Levitsky
2010-08-05 11:48   ` Alex Dubov
2010-08-05 12:30     ` Maxim Levitsky
2010-08-05 17:47       ` Maxim Levitsky
2010-08-06  7:43         ` Alex Dubov
2010-08-06 10:56           ` Maxim Levitsky
2010-08-07 13:15             ` Alex Dubov
2010-08-07 15:58               ` Maxim Levitsky
2010-08-08 13:31                 ` Alex Dubov
2010-08-06  8:01       ` Alex Dubov
2010-08-05 12:46 ` Maxim Levitsky
2010-08-06  7:59   ` Alex Dubov
2010-08-06 10:59     ` Maxim Levitsky
2010-08-07 13:12       ` Alex Dubov
2010-08-07 16:03         ` Maxim Levitsky
2010-08-08 13:33           ` Alex Dubov
2010-08-07 20:22 ` Maxim Levitsky
2010-08-08 14:26   ` Alex Dubov
2010-08-08 15:07     ` Maxim Levitsky
2010-08-08 20:08       ` Maxim Levitsky
2010-08-09  6:31         ` Alex Dubov
2010-08-09  6:56           ` Maxim Levitsky
2010-08-09 15:30           ` Maxim Levitsky
2010-08-10  8:12             ` Alex Dubov
2010-08-10  9:47               ` Maxim Levitsky
2010-08-11  8:08                 ` Alex Dubov
2010-08-11  8:32                   ` Maxim Levitsky
2010-08-12  7:22                     ` Alex Dubov
2010-08-12  7:58                       ` Maxim Levitsky
2010-08-09 19:19           ` Maxim Levitsky
2010-08-10  7:53             ` Alex Dubov
2010-08-10  9:50               ` Maxim Levitsky
2010-08-11  8:16                 ` Alex Dubov
2010-12-09  2:39 MEMSTICK: Add my 2 drivers Maxim Levitsky
2010-12-09  2:42 ` [PATCH 2/2] memstick: Add driver for Ricoh R5C592 card reader Maxim Levitsky

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