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| author | Akinobu Mita <akinobu.mita@gmail.com> | 2014-10-23 13:25:12 +0300 |
|---|---|---|
| committer | Christoph Hellwig <hch@lst.de> | 2014-11-20 17:01:31 +0100 |
| commit | 7c48bfd038e570cd12b33d6ab13316f3a0b0d1a7 (patch) | |
| tree | 13ceab3cb6c1d3c607168d82ce5c5b235c5d8b7e /drivers/scsi/ufs/ufshcd.h | |
| parent | 1899045510ff109980d9cc34e330fd8ca3631871 (diff) | |
| download | linux-7c48bfd038e570cd12b33d6ab13316f3a0b0d1a7.tar.bz2 | |
ufs: fix reference counting of W-LUs
UFS driver adds three well known LUs in the initialization, but those
reference counts are not decremented, so it makes ufshcd module
impossible to unload.
This fixes it by putting scsi_device_put() in the initalization, and in
order to protect concurrent access to hba->sdev_ufs_device (UFS Device
W-LU) from manual delete, increment the reference count while requesting
device power mode setting.
The rest of W-LUs (hba->sdev_boot and hba->sdev_rpmb) are not directly
used from driver, so these references in struct ufs_hba are removed.
Signed-off-by: Akinobu Mita <mita@fixstars.com>
Reviewed-by: Maya Erez <merez@codeaurora.org>
Reviewed-by: Dolev Raviv <draviv@codeaurora.org>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Diffstat (limited to 'drivers/scsi/ufs/ufshcd.h')
| -rw-r--r-- | drivers/scsi/ufs/ufshcd.h | 2 |
1 files changed, 0 insertions, 2 deletions
diff --git a/drivers/scsi/ufs/ufshcd.h b/drivers/scsi/ufs/ufshcd.h index 58ecdff5065c..4a574aa45855 100644 --- a/drivers/scsi/ufs/ufshcd.h +++ b/drivers/scsi/ufs/ufshcd.h @@ -392,8 +392,6 @@ struct ufs_hba { * "UFS device" W-LU. */ struct scsi_device *sdev_ufs_device; - struct scsi_device *sdev_rpmb; - struct scsi_device *sdev_boot; enum ufs_dev_pwr_mode curr_dev_pwr_mode; enum uic_link_state uic_link_state; |