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authorLinus Torvalds <torvalds@linux-foundation.org>2011-05-20 20:29:52 (GMT)
committerLinus Torvalds <torvalds@linux-foundation.org>2011-05-20 20:29:52 (GMT)
commitad9471752ebae25daa133b4e5d9299809c35e155 (patch)
treedfcc75d7ee75ef0465c109423885c4326ccf9b9f /drivers/scsi/scsi_proc.c
parent6c1b8d94bcc1882e451d0e7a28a4a5253f4970ab (diff)
parent6ad11eaa8a689a27e0c99905bcf800a37cd432a0 (diff)
downloadlinux-fsl-qoriq-ad9471752ebae25daa133b4e5d9299809c35e155.tar.xz
Merge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6: (110 commits) [SCSI] qla2xxx: Refactor call to qla2xxx_read_sfp for thermal temperature. [SCSI] qla2xxx: Unify the read/write sfp mailbox command routines. [SCSI] qla2xxx: Clear complete initialization control block. [SCSI] qla2xxx: Allow an override of the registered maximum LUN. [SCSI] qla2xxx: Add host number in reset and quiescent message logs. [SCSI] qla2xxx: Correctly read sfp single byte mailbox register. [SCSI] qla2xxx: Add qla82xx_rom_unlock() function. [SCSI] qla2xxx: Log if qla82xx firmware fails to load from flash. [SCSI] qla2xxx: Use passed in host to initialize local scsi_qla_host in queuecommand function [SCSI] qla2xxx: Correct buffer start in edc sysfs debug print. [SCSI] qla2xxx: Update firmware version after flash update for ISP82xx. [SCSI] qla2xxx: Fix hang during driver unload when vport is active. [SCSI] qla2xxx: Properly set the dsd_list_len for dsd_chaining in cmd type 6. [SCSI] qla2xxx: Fix virtual port failing to login after chip reset. [SCSI] qla2xxx: Fix vport delete hang when logins are outstanding. [SCSI] hpsa: Change memset using sizeof(ptr) to sizeof(*ptr) [SCSI] ipr: Rate limit DMA mapping errors [SCSI] hpsa: add P2000 to list of shared SAS devices [SCSI] hpsa: do not attempt PCI power management reset method if we know it won't work. [SCSI] hpsa: remove superfluous sleeps around reset code ...
Diffstat (limited to 'drivers/scsi/scsi_proc.c')
-rw-r--r--drivers/scsi/scsi_proc.c58
1 files changed, 52 insertions, 6 deletions
diff --git a/drivers/scsi/scsi_proc.c b/drivers/scsi/scsi_proc.c
index c99da92..f46855c 100644
--- a/drivers/scsi/scsi_proc.c
+++ b/drivers/scsi/scsi_proc.c
@@ -386,13 +386,59 @@ static ssize_t proc_scsi_write(struct file *file, const char __user *buf,
* @s: output goes here
* @p: not used
*/
-static int proc_scsi_show(struct seq_file *s, void *p)
+static int always_match(struct device *dev, void *data)
{
- seq_printf(s, "Attached devices:\n");
- bus_for_each_dev(&scsi_bus_type, NULL, s, proc_print_scsidevice);
- return 0;
+ return 1;
+}
+
+static inline struct device *next_scsi_device(struct device *start)
+{
+ struct device *next = bus_find_device(&scsi_bus_type, start, NULL,
+ always_match);
+ put_device(start);
+ return next;
}
+static void *scsi_seq_start(struct seq_file *sfile, loff_t *pos)
+{
+ struct device *dev = NULL;
+ loff_t n = *pos;
+
+ while ((dev = next_scsi_device(dev))) {
+ if (!n--)
+ break;
+ sfile->private++;
+ }
+ return dev;
+}
+
+static void *scsi_seq_next(struct seq_file *sfile, void *v, loff_t *pos)
+{
+ (*pos)++;
+ sfile->private++;
+ return next_scsi_device(v);
+}
+
+static void scsi_seq_stop(struct seq_file *sfile, void *v)
+{
+ put_device(v);
+}
+
+static int scsi_seq_show(struct seq_file *sfile, void *dev)
+{
+ if (!sfile->private)
+ seq_puts(sfile, "Attached devices:\n");
+
+ return proc_print_scsidevice(dev, sfile);
+}
+
+static const struct seq_operations scsi_seq_ops = {
+ .start = scsi_seq_start,
+ .next = scsi_seq_next,
+ .stop = scsi_seq_stop,
+ .show = scsi_seq_show
+};
+
/**
* proc_scsi_open - glue function
* @inode: not used
@@ -406,7 +452,7 @@ static int proc_scsi_open(struct inode *inode, struct file *file)
* We don't really need this for the write case but it doesn't
* harm either.
*/
- return single_open(file, proc_scsi_show, NULL);
+ return seq_open(file, &scsi_seq_ops);
}
static const struct file_operations proc_scsi_operations = {
@@ -415,7 +461,7 @@ static const struct file_operations proc_scsi_operations = {
.read = seq_read,
.write = proc_scsi_write,
.llseek = seq_lseek,
- .release = single_release,
+ .release = seq_release,
};
/**