linux-kernel - Re: [patch] sbp-target: checking for NULL instead of IS

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Date:	Fri, 04 Mar 2016 23:33:34 -0800
From:	"Nicholas A. Bellinger" <nab@...ux-iscsi.org>
To:	Dan Carpenter <dan.carpenter@...cle.com>
Cc:	Chris Boot <bootc@...tc.net>, target-devel@...r.kernel.org,
	linux1394-devel@...ts.sourceforge.net,
	linux-kernel@...r.kernel.org, kernel-janitors@...r.kernel.org
Subject: Re: [patch] sbp-target: checking for NULL instead of IS_ERR

Hi Dan + BootC,

On Wed, 2016-03-02 at 13:09 +0300, Dan Carpenter wrote:
> We changed this from kzalloc to sbp_mgt_get_req() so we need to change
> from checking for NULL to check for error pointers.
> 
> Fixes: c064b2a78989 ('sbp-target: Conversion to percpu_ida tag pre-allocation')
> Signed-off-by: Dan Carpenter <dan.carpenter@...cle.com>
> 
> diff --git a/drivers/target/sbp/sbp_target.c b/drivers/target/sbp/sbp_target.c
> index 251d532..a04b0605f 100644
> --- a/drivers/target/sbp/sbp_target.c
> +++ b/drivers/target/sbp/sbp_target.c
> @@ -951,7 +951,7 @@ static void tgt_agent_fetch_work(struct work_struct *work)
>  
>  	while (next_orb && tgt_agent_check_active(agent)) {
>  		req = sbp_mgt_get_req(sess, sess->card, next_orb);
> -		if (!req) {
> +		if (IS_ERR(req)) {
>  			spin_lock_bh(&agent->lock);
>  			agent->state = AGENT_STATE_DEAD;
>  			spin_unlock_bh(&agent->lock);

Fixed + folded into the original patch.

Thanks Dan.

Chris, would you be so kind to review the original changes here:

sbp-target: Conversion to percpu_ida tag pre-allocation
http://www.spinics.net/lists/target-devel/msg11778.html

 sbp-target: Convert to TARGET_SCF_ACK_KREF I/O krefs
http://www.spinics.net/lists/target-devel/msg11780.html

and verify on your local IEEE1394 target setup..?