From: Bart Van Assche <bvanassche@acm.org>
To: manivannan.sadhasivam@linaro.org,
Alim Akhtar <alim.akhtar@samsung.com>,
Avri Altman <avri.altman@wdc.com>,
"James E.J. Bottomley" <James.Bottomley@HansenPartnership.com>,
"Martin K. Petersen" <martin.petersen@oracle.com>
Cc: linux-scsi@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-arm-msm@vger.kernel.org,
Kyoungrul Kim <k831.kim@samsung.com>,
Amit Pundir <amit.pundir@linaro.org>
Subject: Re: [PATCH v3 1/2] ufs: core: Add a quirk for handling broken LSDBS field in controller capabilities register
Date: Fri, 16 Aug 2024 10:16:48 -0700 [thread overview]
Message-ID: <36d30039-8e42-4f3d-9812-09f49b3c0e71@acm.org> (raw)
In-Reply-To: <20240816-ufs-bug-fix-v3-1-e6fe0e18e2a3@linaro.org>
On 8/15/24 11:25 PM, Manivannan Sadhasivam via B4 Relay wrote:
> 'Legacy Queue & Single Doorbell Support (LSDBS)' field in the controller
> capabilities register is supposed to report whether the legacy single
> doorbell mode is supported in the controller or not. But some controllers
> report '1' in this field which corresponds to 'LSDB not supported', but
> they indeed support LSDB. So let's add a quirk to handle those controllers.
>
> If the quirk is enabled by the controller driver, then LSDBS register field
> will be ignored and legacy single doorbell mode is assumed to be enabled
> always.
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
next prev parent reply other threads:[~2024-08-16 17:16 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-08-16 6:25 [PATCH v3 0/2] ufs: qcom: Fix probe failure on SM8550 SoC due to broken LSDBS field Manivannan Sadhasivam via B4 Relay
2024-08-16 6:25 ` [PATCH v3 1/2] ufs: core: Add a quirk for handling broken LSDBS field in controller capabilities register Manivannan Sadhasivam via B4 Relay
2024-08-16 17:16 ` Bart Van Assche [this message]
2024-08-16 6:25 ` [PATCH v3 2/2] ufs: qcom: Add UFSHCD_QUIRK_BROKEN_LSDBS_CAP for SM8550 SoC Manivannan Sadhasivam via B4 Relay
2024-08-17 1:28 ` [PATCH v3 0/2] ufs: qcom: Fix probe failure on SM8550 SoC due to broken LSDBS field Martin K. Petersen
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