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[SCSI] sg: remove closed flag 

After sg_release() has been called, noone should be able to actually use
that filedescriptor anymore.  So if closed ever made a difference in the
past five years or so, it would have meant a bug.  Remove it.

Signed-off-by: Joern Engel <joern@logfs.org>
Acked-by: Douglas Gilbert <dgilbert@interlog.com>
[jejb: fix up checkpatch warnings]
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
This commit is contained in:
Jörn Engel 2012-04-12 17:33:39 -04:00 committed by James Bottomley
parent 3f0c6aba0b
commit ebaf466be5
1 changed files with 7 additions and 7 deletions
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14
drivers/scsi/sg.c
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@ -157,7 +157,6 @@ typedef struct sg_fd { /* holds the state of a file descriptor */
Sg_request req_arr[SG_MAX_QUEUE]; /* used as singly-linked list */
char low_dma; /* as in parent but possibly overridden to 1 */
char force_packid; /* 1 -> pack_id input to read(), 0 -> ignored */
volatile char closed; /* 1 -> fd closed but request(s) outstanding */
char cmd_q; /* 1 -> allow command queuing, 0 -> don't */
char next_cmd_len; /* 0 -> automatic (def), >0 -> use on next write() */
char keep_orphan; /* 0 -> drop orphan (def), 1 -> keep for read() */
@ -329,8 +328,6 @@ sg_release(struct inode *inode, struct file *filp)
return -ENXIO;
SCSI_LOG_TIMEOUT(3, printk("sg_release: %s\n", sdp->disk->disk_name));
sfp->closed = 1;
sdp->exclude = 0;
wake_up_interruptible(&sdp->o_excl_wait);
@ -1118,8 +1115,11 @@ sg_poll(struct file *filp, poll_table * wait)
int count = 0;
unsigned long iflags;
if ((!(sfp = (Sg_fd *) filp->private_data)) || (!(sdp = sfp->parentdp))
|| sfp->closed)
sfp = filp->private_data;
if (!sfp)
return POLLERR;
sdp = sfp->parentdp;
if (!sdp)
return POLLERR;
poll_wait(filp, &sfp->read_wait, wait);
read_lock_irqsave(&sfp->rq_list_lock, iflags);
@ -2515,9 +2515,9 @@ static void sg_proc_debug_helper(struct seq_file *s, Sg_device * sdp)
fp->reserve.bufflen,
(int) fp->reserve.k_use_sg,
(int) fp->low_dma);
seq_printf(s, " cmd_q=%d f_packid=%d k_orphan=%d closed=%d\n",
seq_printf(s, " cmd_q=%d f_packid=%d k_orphan=%d closed=0\n",
(int) fp->cmd_q, (int) fp->force_packid,
(int) fp->keep_orphan, (int) fp->closed);
(int) fp->keep_orphan);
for (m = 0, srp = fp->headrp;
srp != NULL;
++m, srp = srp->nextrp) {