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From: Eric Auger <eric.auger@linaro.org>
To: Arnd Bergmann <arnd@arndb.de>, linux-arm-kernel@lists.infradead.org
Cc: kvm@vger.kernel.org, patches@linaro.org,
	linux-kernel@vger.kernel.org, alex.williamson@redhat.com,
	eric.auger@st.com, kvmarm@lists.cs.columbia.edu
Subject: Re: [PATCH v3 2/7] vfio: platform: add capability to register a reset function
Date: Fri, 23 Oct 2015 16:15:06 +0200	[thread overview]
Message-ID: <562A40EA.40706@linaro.org> (raw)
In-Reply-To: <5723752.hDK15zeNcm@wuerfel>

On 10/23/2015 03:07 PM, Arnd Bergmann wrote:
> On Friday 23 October 2015 14:37:10 Eric Auger wrote:
>> +
>> +void vfio_platform_unregister_reset(const char *compat)
>> +{
>> +       struct vfio_platform_reset_node *iter, *temp;
>> +
>> +       mutex_lock(&driver_lock);
>> +       list_for_each_entry_safe(iter, temp, &reset_list, link) {
>> +               if (!strcmp(iter->compat, compat)) {
>> +                       list_del(&iter->link);
>> +                       break;
>> +               }
>> +       }
>> +
>> +       mutex_unlock(&driver_lock);
>> +}
>> +EXPORT_SYMBOL_GPL(vfio_platform_unregister_reset);
>>
> 
> This is slightly unsafe in case you ever get two drivers that register
> with the same compat string. If we care about that, we could pass
> and compare both the string and the function pointer, or the
> vfio_platform_reset_node.
OK

Thanks

Eric
> 
> 	Arnd
> 

WARNING: multiple messages have this Message-ID (diff)
From: eric.auger@linaro.org (Eric Auger)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v3 2/7] vfio: platform: add capability to register a reset function
Date: Fri, 23 Oct 2015 16:15:06 +0200	[thread overview]
Message-ID: <562A40EA.40706@linaro.org> (raw)
In-Reply-To: <5723752.hDK15zeNcm@wuerfel>

On 10/23/2015 03:07 PM, Arnd Bergmann wrote:
> On Friday 23 October 2015 14:37:10 Eric Auger wrote:
>> +
>> +void vfio_platform_unregister_reset(const char *compat)
>> +{
>> +       struct vfio_platform_reset_node *iter, *temp;
>> +
>> +       mutex_lock(&driver_lock);
>> +       list_for_each_entry_safe(iter, temp, &reset_list, link) {
>> +               if (!strcmp(iter->compat, compat)) {
>> +                       list_del(&iter->link);
>> +                       break;
>> +               }
>> +       }
>> +
>> +       mutex_unlock(&driver_lock);
>> +}
>> +EXPORT_SYMBOL_GPL(vfio_platform_unregister_reset);
>>
> 
> This is slightly unsafe in case you ever get two drivers that register
> with the same compat string. If we care about that, we could pass
> and compare both the string and the function pointer, or the
> vfio_platform_reset_node.
OK

Thanks

Eric
> 
> 	Arnd
> 

WARNING: multiple messages have this Message-ID (diff)
From: Eric Auger <eric.auger@linaro.org>
To: Arnd Bergmann <arnd@arndb.de>, linux-arm-kernel@lists.infradead.org
Cc: eric.auger@st.com, alex.williamson@redhat.com,
	b.reynal@virtualopensystems.com, kvmarm@lists.cs.columbia.edu,
	kvm@vger.kernel.org, linux-kernel@vger.kernel.org,
	christoffer.dall@linaro.org, patches@linaro.org
Subject: Re: [PATCH v3 2/7] vfio: platform: add capability to register a reset function
Date: Fri, 23 Oct 2015 16:15:06 +0200	[thread overview]
Message-ID: <562A40EA.40706@linaro.org> (raw)
In-Reply-To: <5723752.hDK15zeNcm@wuerfel>

On 10/23/2015 03:07 PM, Arnd Bergmann wrote:
> On Friday 23 October 2015 14:37:10 Eric Auger wrote:
>> +
>> +void vfio_platform_unregister_reset(const char *compat)
>> +{
>> +       struct vfio_platform_reset_node *iter, *temp;
>> +
>> +       mutex_lock(&driver_lock);
>> +       list_for_each_entry_safe(iter, temp, &reset_list, link) {
>> +               if (!strcmp(iter->compat, compat)) {
>> +                       list_del(&iter->link);
>> +                       break;
>> +               }
>> +       }
>> +
>> +       mutex_unlock(&driver_lock);
>> +}
>> +EXPORT_SYMBOL_GPL(vfio_platform_unregister_reset);
>>
> 
> This is slightly unsafe in case you ever get two drivers that register
> with the same compat string. If we care about that, we could pass
> and compare both the string and the function pointer, or the
> vfio_platform_reset_node.
OK

Thanks

Eric
> 
> 	Arnd
> 


  reply	other threads:[~2015-10-23 14:12 UTC|newest]

Thread overview: 49+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-10-23 12:37 [PATCH v3 0/7] VFIO platform reset module rework Eric Auger
2015-10-23 12:37 ` Eric Auger
2015-10-23 12:37 ` Eric Auger
2015-10-23 12:37 ` [PATCH v3 1/7] vfio: platform: introduce vfio-platform-base module Eric Auger
2015-10-23 12:37   ` Eric Auger
2015-10-23 12:37   ` Eric Auger
2015-10-23 13:04   ` Arnd Bergmann
2015-10-23 13:04     ` Arnd Bergmann
2015-10-23 12:37 ` [PATCH v3 2/7] vfio: platform: add capability to register a reset function Eric Auger
2015-10-23 12:37   ` Eric Auger
2015-10-23 12:37   ` Eric Auger
2015-10-23 13:07   ` Arnd Bergmann
2015-10-23 13:07     ` Arnd Bergmann
2015-10-23 13:07     ` Arnd Bergmann
2015-10-23 14:15     ` Eric Auger [this message]
2015-10-23 14:15       ` Eric Auger
2015-10-23 14:15       ` Eric Auger
2015-10-23 12:37 ` [PATCH v3 3/7] vfio: platform: introduce module_vfio_reset_handler macro Eric Auger
2015-10-23 12:37   ` Eric Auger
2015-10-23 12:37   ` Eric Auger
2015-10-23 13:09   ` Arnd Bergmann
2015-10-23 13:09     ` Arnd Bergmann
2015-10-23 13:09     ` Arnd Bergmann
2015-10-23 14:10     ` Eric Auger
2015-10-23 14:10       ` Eric Auger
2015-10-23 14:10       ` Eric Auger
2015-10-23 12:37 ` [PATCH v3 4/7] vfio: platform: reset: calxedaxgmac: add reset function registration Eric Auger
2015-10-23 12:37   ` Eric Auger
2015-10-23 12:37   ` Eric Auger
2015-10-23 13:09   ` Arnd Bergmann
2015-10-23 13:09     ` Arnd Bergmann
2015-10-23 13:09     ` Arnd Bergmann
2015-10-23 12:37 ` [PATCH v3 5/7] vfio: platform: add compat in vfio_platform_device Eric Auger
2015-10-23 12:37   ` Eric Auger
2015-10-23 12:37 ` [PATCH v3 6/7] vfio: platform: use list of registered reset function Eric Auger
2015-10-23 12:37   ` Eric Auger
2015-10-23 12:37   ` Eric Auger
2015-10-23 13:12   ` Arnd Bergmann
2015-10-23 13:12     ` Arnd Bergmann
2015-10-23 14:11     ` Eric Auger
2015-10-23 14:11       ` Eric Auger
2015-10-23 14:23       ` Arnd Bergmann
2015-10-23 14:23         ` Arnd Bergmann
2015-10-23 15:15         ` Eric Auger
2015-10-23 15:15           ` Eric Auger
2015-10-23 15:15           ` Eric Auger
2015-10-23 12:37 ` [PATCH v3 7/7] vfio: platform: add dev_info on device reset Eric Auger
2015-10-23 12:37   ` Eric Auger
2015-10-23 12:37   ` Eric Auger

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