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FROMLIST: scsi: ufs: clear UAC for FFU

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Let's clear UAC to run FFU or RPMB ops.

Bug: 158050260
Bug: 156130055
Signed-off-by: Jaegeuk Kim <jaegeuk@google.com>
Link: https://lore.kernel.org/linux-scsi/20200915204532.1672300-2-jaegeuk@kernel.org/T/#u
Change-Id: Id0f99336d7d84b51f1d0b5d8483ab3eec7b40741
This commit is contained in:
Jaegeuk Kim
2020-05-11 10:27:41 -07:00
parent b78d30deb3
commit fc6762d925
1 changed files with 41 additions and 0 deletions
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41
drivers/scsi/ufs/ufshcd.c
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@@ -7392,6 +7392,45 @@ out:
return ret; return ret;
} }
static int
ufshcd_send_request_sense(struct ufs_hba *hba, struct scsi_device *sdp);
static int ufshcd_clear_uac(struct ufs_hba *hba)
{
struct scsi_device *sdp;
unsigned long flags;
int ret = 0;
spin_lock_irqsave(hba->host->host_lock, flags);
sdp = hba->sdev_ufs_device;
if (sdp) {
ret = scsi_device_get(sdp);
if (!ret && !scsi_device_online(sdp)) {
ret = -ENODEV;
scsi_device_put(sdp);
}
} else {
ret = -ENODEV;
}
spin_unlock_irqrestore(hba->host->host_lock, flags);
if (ret)
goto out_err;
if (hba->wlun_dev_clr_ua) {
ret = ufshcd_send_request_sense(hba, sdp);
if (ret)
goto out;
/* Unit attention condition is cleared now */
hba->wlun_dev_clr_ua = false;
}
out:
scsi_device_put(sdp);
out_err:
if (ret)
dev_err(hba->dev, "%s: UAC clear ret = %d\n", __func__, ret);
return ret;
}
/** /**
* ufshcd_probe_hba - probe hba to detect device and initialize * ufshcd_probe_hba - probe hba to detect device and initialize
* @hba: per-adapter instance * @hba: per-adapter instance
@@ -7507,6 +7546,8 @@ out:
pm_runtime_put_sync(hba->dev); pm_runtime_put_sync(hba->dev);
ufshcd_exit_clk_scaling(hba); ufshcd_exit_clk_scaling(hba);
ufshcd_hba_exit(hba); ufshcd_hba_exit(hba);
} else {
ufshcd_clear_uac(hba);
} }
} }