On 5/23/2016 9:02 AM, Eric Auger wrote:
> Hi Sinan,
> On 05/16/2016 04:13 AM, Sinan Kaya wrote:
>> The reset call sequence seems to replicate itself multiple times
>> across the file. Grouping them together for maintenance reasons.
>>
>> Signed-off-by: Sinan Kaya <okaya@xxxxxxxxxxxxxx>
>> ---
>> drivers/vfio/platform/vfio_platform_common.c | 31 ++++++++++++++--------------
>> 1 file changed, 15 insertions(+), 16 deletions(-)
>>
>> diff --git a/drivers/vfio/platform/vfio_platform_common.c b/drivers/vfio/platform/vfio_platform_common.c
>> index 08fd7c2..cb91dd3 100644
>> --- a/drivers/vfio/platform/vfio_platform_common.c
>> +++ b/drivers/vfio/platform/vfio_platform_common.c
>> @@ -134,6 +134,18 @@ static void vfio_platform_regions_cleanup(struct vfio_platform_device *vdev)
>> kfree(vdev->regions);
>> }
>>
>> +static int vfio_platform_call_reset(struct vfio_platform_device *vdev)
>> +{
>> + if (vdev->of_reset) {
>> + dev_info(vdev->device, "reset\n");
>> + vdev->of_reset(vdev);
>> + return 0;
> you should return vdev->of_reset(vdev) to keep the existing
> VFIO_DEVICE_RESET ioctl behavior
will do.
>
> Once fixed, Reviewed-by: Eric Auger <eric.auger@xxxxxxxxxx>
>
thanks.
> Besides, but this goes beyond the scope of your series, maybe we should
> reconsider in the future what happens in case the reset fails on
> open/release.
>
I like giving an error immediately to be honest on open.
> Best Regards
>
> Eric
>> + }
>> +
>> + dev_warn(vdev->device, "no reset function found!\n");
>> + return -EINVAL;
>> +}
>> +
>> static void vfio_platform_release(void *device_data)
>> {
>> struct vfio_platform_device *vdev = device_data;
>> @@ -141,12 +153,7 @@ static void vfio_platform_release(void *device_data)
>> mutex_lock(&driver_lock);
>>
>> if (!(--vdev->refcnt)) {
>> - if (vdev->of_reset) {
>> - dev_info(vdev->device, "reset\n");
>> - vdev->of_reset(vdev);
>> - } else {
>> - dev_warn(vdev->device, "no reset function found!\n");
>> - }
>> + vfio_platform_call_reset(vdev);
>> vfio_platform_regions_cleanup(vdev);
>> vfio_platform_irq_cleanup(vdev);
>> }
>> @@ -175,12 +182,7 @@ static int vfio_platform_open(void *device_data)
>> if (ret)
>> goto err_irq;
>>
>> - if (vdev->of_reset) {
>> - dev_info(vdev->device, "reset\n");
>> - vdev->of_reset(vdev);
>> - } else {
>> - dev_warn(vdev->device, "no reset function found!\n");
>> - }
>> + vfio_platform_call_reset(vdev);
>> }
>>
>> vdev->refcnt++;
>> @@ -312,10 +314,7 @@ static long vfio_platform_ioctl(void *device_data,
>> return ret;
>>
>> } else if (cmd == VFIO_DEVICE_RESET) {
>> - if (vdev->of_reset)
>> - return vdev->of_reset(vdev);
>> - else
>> - return -EINVAL;
>> + return vfio_platform_call_reset(vdev);
>> }
>>
>> return -ENOTTY;
>>
>
--
Sinan Kaya
Qualcomm Technologies, Inc. on behalf of Qualcomm Innovation Center, Inc.
Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, a Linux Foundation Collaborative Project
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