• Lan Tianyu's avatar
    [SCSI] sd: Add runtime pm in the sd_check_events() · 4e2247b2
    Lan Tianyu authored
    The sd_check_event() will be called periodly even when the device is in the
    suspended status to check media event. The scsi_test_unit_ready() in the
    sd_check_event() will issue scsi cmd request. Issuing scsi request when the
    device is in the suspeneded status will cause problem. For example, when a usb
    flash disk in the suspended status, scsi_test_unit_ready() issues a scsi
    request. The request will be returned as failed because the usb device is not
    active. The patch adds scsi_autopm_get_device() and scsi_autopm_put_device()
    around scsi_test_unit_ready() in the sd_check_event() to resolve such problem.
    Signed-off-by: default avatarLan Tianyu <tianyu.lan@intel.com>
    Acked-by: default avatarAlan Stern <stern@rowland.harvard.edu>
    Signed-off-by: default avatarJames Bottomley <JBottomley@Parallels.com>
sd.c 78.6 KB