[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>
diff --git a/drivers/scsi/sg.c b/drivers/scsi/sg.c
index 1a0be4f..511e3ca 100644
--- a/drivers/scsi/sg.c
+++ b/drivers/scsi/sg.c
@@ -157,7 +157,6 @@
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 @@
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 @@
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 @@
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) {