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Date: Tue, 2 Apr 2024 17:44:18 +0300
From: Dan Carpenter <dan.carpenter@linaro.org>
To: Boris Brezillon <boris.brezillon@collabora.com>
Cc: Harshit Mogalapalli <harshit.m.mogalapalli@oracle.com>,
	Steven Price <steven.price@arm.com>,
	Liviu Dudau <liviu.dudau@arm.com>,
	Maarten Lankhorst <maarten.lankhorst@linux.intel.com>,
	Maxime Ripard <mripard@kernel.org>,
	Thomas Zimmermann <tzimmermann@suse.de>,
	David Airlie <airlied@gmail.com>, Daniel Vetter <daniel@ffwll.ch>,
	Heiko Stuebner <heiko@sntech.de>,
	Grant Likely <grant.likely@linaro.org>,
	dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org,
	kernel-janitors@vger.kernel.org, error27@gmail.com
Subject: Re: [PATCH v3] drm/panthor: Fix couple of NULL vs IS_ERR() bugs
Message-ID: <91e25b42-c3fa-4b69-ab8c-5d79610e757b@moroto.mountain>
References: <20240402141412.1707949-1-harshit.m.mogalapalli@oracle.com>
 <20240402163838.34003a10@collabora.com>
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On Tue, Apr 02, 2024 at 04:38:38PM +0200, Boris Brezillon wrote:
> On Tue,  2 Apr 2024 07:14:11 -0700
> Harshit Mogalapalli <harshit.m.mogalapalli@oracle.com> wrote:
> 
> > Currently panthor_vm_get_heap_pool() returns both ERR_PTR() and
> > NULL(when create is false and if there is no poool attached to the
> 
>                                                ^ pool
> 
> > VM)
> > 	- Change the function to return error pointers, when pool is
> > 	  NULL return -ENOENT
> > 	- Also handle the callers to check for IS_ERR() on failure.
> > 
> > Fixes: 4bdca1150792 ("drm/panthor: Add the driver frontend block")
> 
> I would explain that the code was correct, but the documentation didn't
> match the function behavior, otherwise it feels a bit weird to have a
> Fixes tag here.

The code wasn't correct, it returned a mix of error pointers and NULL.
So it needs a Fixes tag.

regards,
dan carpenter