From: Jeff Garzik <jeff@garzik.org>
To: Ramya Desai <ramya.desai@gmail.com>
Cc: linux-scsi@vger.kernel.org
Subject: Re: Return of PENDING status to SCSI driver
Date: Fri, 12 Jun 2009 07:32:56 -0400 [thread overview]
Message-ID: <4A323CE8.7010207@garzik.org> (raw)
In-Reply-To: <3e7aae30906120229p3bbeb7f0jd07c5f1e823a456a@mail.gmail.com>
Ramya Desai wrote:
> Dear Experts,
>
> I am writing my mass storage class driver for my custom USB device.
> My device is capable of queuing the commands that are issued to it.
> So, I wanted to send the second command from my driver even before the
> completion of first command.
> To do this I wanted to return the PENDING status to the SCSI layer
> immediately after receiving the command.
Simply queue as many commands as possible to your hardware, and complete
them when they are done. Use can_queue or scsi_adjust_queue_depth() to
set queueing limits.
Jeff
next prev parent reply other threads:[~2009-06-12 11:32 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-06-12 9:29 Return of PENDING status to SCSI driver Ramya Desai
2009-06-12 11:32 ` Jeff Garzik [this message]
2009-06-12 12:54 ` Ramya Desai
2009-06-12 17:26 ` Stefan Richter
2009-06-14 9:16 ` Boaz Harrosh
2009-06-15 12:07 ` Ramya Desai
2009-06-15 12:26 ` Matthew Wilcox
2009-06-15 12:29 ` Boaz Harrosh
[not found] ` <4A363EB4.8000102-C4P08NqkoRlBDgjK7y7TUQ@public.gmane.org>
2009-06-15 14:01 ` Alan Stern
2009-06-15 14:07 ` Ramya Desai
[not found] ` <3e7aae30906150707we781237o366950971d748b6f-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2009-06-15 14:33 ` Boaz Harrosh
2009-06-15 14:42 ` Ramya Desai
[not found] ` <3e7aae30906150742l18e74a8fua5f08686c2c76454-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2009-06-15 14:50 ` Ramya Desai
[not found] ` <3e7aae30906150750m6809aa87v35f739e0a72243d-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2009-06-15 14:59 ` Matthew Dharm
2009-06-15 14:59 ` Alan Stern
2009-06-15 16:31 ` Boaz Harrosh
[not found] ` <4A36776C.5010208-C4P08NqkoRlBDgjK7y7TUQ@public.gmane.org>
2009-06-16 13:35 ` Ramya Desai
2009-06-16 13:59 ` Alan Cox
2009-06-16 14:27 ` Boaz Harrosh
2009-06-16 14:39 ` James Bottomley
[not found] ` <4A37ABDC.4050308-C4P08NqkoRlBDgjK7y7TUQ@public.gmane.org>
2009-06-16 15:09 ` Ramya Desai
2009-06-16 15:22 ` Alan Stern
[not found] ` <3e7aae30906160809y32f0c8f6j3352cd1ec2bfe34a-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2009-06-16 15:27 ` Boaz Harrosh
[not found] ` <3e7aae30906160635g4d191a4exdb710554a349cac0-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2009-06-16 15:13 ` Alan Stern
2009-06-15 17:19 ` Jeff Garzik
2009-06-15 14:40 ` Alan Stern
2009-06-15 14:42 ` Boaz Harrosh
[not found] ` <4A365DCA.2030907-C4P08NqkoRlBDgjK7y7TUQ@public.gmane.org>
2009-06-15 14:49 ` Alan Stern
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