On 2020-08-13 01:55, Stanley Chu wrote:
> I tried many ways to come out the final solution. Currently two options
> are considered,
>
> == Option 1 ==
> pm_runtime_get_sync(hba->dev);
>
> shost_for_each_device(sdev, hba->host) {
> scsi_autopm_get_device(sdev);
>
Hi Bart, Can, Chaotian,
Very appreciate your comments and suggestions, please see update below,
On Tue, 2020-08-04 at 00:04 +0800, Bart Van Assche wrote:
> On 2020-08-03 03:04, Stanley Chu wrote:
> > diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c
> > index 307622284239..7cb220
On 2020-08-03 03:04, Stanley Chu wrote:
> diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c
> index 307622284239..7cb220b3fde0 100644
> --- a/drivers/scsi/ufs/ufshcd.c
> +++ b/drivers/scsi/ufs/ufshcd.c
> @@ -8640,6 +8640,7 @@ EXPORT_SYMBOL(ufshcd_runtime_idle);
> int ufshcd_shutdo
Hi Stanley,
Sorry for the noises, please ignore my previous 2 mails and let's
focus on this one.
On 2020-08-03 18:04, Stanley Chu wrote:
Currently I/O request could be still submitted to UFS device while
UFS is working on shutdown flow. This may lead to racing as below
scenarios and finally sys
Slightly updated my comments
On 2020-08-03 19:50, Can Guo wrote:
Hi Stanley,
On 2020-08-03 18:04, Stanley Chu wrote:
Currently I/O request could be still submitted to UFS device while
UFS is working on shutdown flow. This may lead to racing as below
scenarios and finally system may crash due t
Hi Stanley,
On 2020-08-03 18:04, Stanley Chu wrote:
Currently I/O request could be still submitted to UFS device while
UFS is working on shutdown flow. This may lead to racing as below
scenarios and finally system may crash due to unclocked register
accesses.
To fix this kind of issues, in ufsh
Currently I/O request could be still submitted to UFS device while
UFS is working on shutdown flow. This may lead to racing as below
scenarios and finally system may crash due to unclocked register
accesses.
To fix this kind of issues, in ufshcd_shutdown(),
1. Use pm_runtime_get_sync() instead of
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