Messages in this thread | | | Date | Mon, 16 Mar 2020 14:34:41 +0800 | From | Can Guo <> | Subject | Re: [PATCH v5 7/8] scsi: ufs: make HCE polling more compact to improve initialization latency |
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On 2020-03-16 11:42, Stanley Chu wrote: > Reduce the waiting period between each HCE (Host Controller Enable) > polling from 5 ms to 1 ms. In the same time, increase the maximum > polling > times to make "total polling time" unchanged approximately. > > This change could make HCE initializatoin faster to improve latency of > ufshcd initialization, error recovery, and resume behaviors. > > Signed-off-by: Stanley Chu <stanley.chu@mediatek.com> > Reviewed-by: Avri Altman <avri.altman@wdc.com>
Reviewed-by: Can Guo <cang@codeaurora.org>
> --- > drivers/scsi/ufs/ufshcd.c | 4 ++-- > 1 file changed, 2 insertions(+), 2 deletions(-) > > diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c > index dcbf45d547d8..cd33d07c56cf 100644 > --- a/drivers/scsi/ufs/ufshcd.c > +++ b/drivers/scsi/ufs/ufshcd.c > @@ -4301,7 +4301,7 @@ int ufshcd_hba_enable(struct ufs_hba *hba) > ufshcd_wait_us(hba->hba_enable_delay_us, 100, true); > > /* wait for the host controller to complete initialization */ > - retry = 10; > + retry = 50; > while (ufshcd_is_hba_active(hba)) { > if (retry) { > retry--; > @@ -4310,7 +4310,7 @@ int ufshcd_hba_enable(struct ufs_hba *hba) > "Controller enable failed\n"); > return -EIO; > } > - ufshcd_wait_us(5000, 100, true); > + ufshcd_wait_us(1000, 100, true); > } > > /* enable UIC related interrupts */
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