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    scsi: balance out autopm get/put calls in scsi_sysfs_add_sdev() · 6fe8c1db
    Subhash Jadavani 提交于
    SCSI Well-known logical units generally don't have any scsi driver
    associated with it which means no one will call scsi_autopm_put_device()
    on these wlun scsi devices and this would result in keeping the
    corresponding scsi device always active (hence LLD can't be suspended as
    well). Same exact problem can be seen for other scsi device representing
    normal logical unit whose driver is yet to be loaded. This patch fixes
    the above problem with this approach:
    
    - make the scsi_autopm_put_device call at the end of scsi_sysfs_add_sdev
      to make it balance out the get earlier in the function.
    - let drivers do paired get/put calls in their probe methods.
    Signed-off-by: NSubhash Jadavani <subhashj@codeaurora.org>
    Signed-off-by: NDolev Raviv <draviv@codeaurora.org>
    Signed-off-by: NChristoph Hellwig <hch@lst.de>
    6fe8c1db
scsi_sysfs.c 33.2 KB