From: Jörn Engel Date: Thu, 12 Apr 2012 21:33:39 +0000 (-0400) Subject: [SCSI] sg: remove closed flag X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=ebaf466be5afa6c6dca29005374de4534e0e6b33;p=GitHub%2Fexynos8895%2Fandroid_kernel_samsung_universal8895.git [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 Acked-by: Douglas Gilbert [jejb: fix up checkpatch warnings] Signed-off-by: James Bottomley --- diff --git a/drivers/scsi/sg.c b/drivers/scsi/sg.c index 1a0be4f1d1fa..511e3ca1afd6 100644 --- a/drivers/scsi/sg.c +++ b/drivers/scsi/sg.c @@ -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) {