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scsi: ufs-qcom: skip svs2 configuration for newer controllers

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Newer QCOM UFS host controller doesn't need to execute
the special LPM mode configuration when switching to SVS2
mode. This change looks at the host controller version
to bypass this special configuration for newer controller
version.

Change-Id: Ib84663955c0c0db6124819c4c4749e5c347a3495
Signed-off-by: Subhash Jadavani <subhashj@codeaurora.org>
This commit is contained in:
Subhash Jadavani 2016-08-22 16:43:41 -07:00 • committed by Venkat Gopalakrishnan
parent b938e3480e
commit a58cf90d63
1 changed files with 5 additions and 0 deletions
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5
drivers/scsi/ufs/ufs-qcom.c
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@ -2087,6 +2087,11 @@ static inline int ufs_qcom_configure_lpm(struct ufs_hba *hba, bool enable)
if (!ufs_qcom_cap_svs2(host))
goto out;
if (!((host->hw_ver.major == 0x3) &&
(host->hw_ver.minor == 0x0) &&
(host->hw_ver.step == 0x0)))
goto out;
/*
* The link should be put in hibern8 state before
* configuring the PHY to enter/exit SVS2 mode.