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scsi: esas2r: Introduce scsi_template_proc_dir()

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Prepare for removing the 'proc_dir' and 'present' members from the SCSI
host template. This commit does not change any functionality.

Reviewed-by: John Garry <john.garry@huawei.com>
Cc: Bradley Grove <linuxdrivers@attotech.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Ming Lei <ming.lei@redhat.com>
Cc: Hannes Reinecke <hare@suse.de>
Cc: Mike Christie <michael.christie@oracle.com>
Cc: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Link: https://lore.kernel.org/r/20221015002418.30955-3-bvanassche@acm.org
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Bart Van Assche 2022-10-14 17:24:12 -07:00 • committed by Martin K. Petersen
parent b6da92356c
commit 77916da7e4
3 changed files with 28 additions and 6 deletions
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17
drivers/scsi/esas2r/esas2r_main.c
View file

@ -635,10 +635,13 @@ static void __exit esas2r_exit(void)
esas2r_log(ESAS2R_LOG_INFO, "%s called", __func__);
if (esas2r_proc_major > 0) {
struct proc_dir_entry *proc_dir;
esas2r_log(ESAS2R_LOG_INFO, "unregister proc");
remove_proc_entry(ATTONODE_NAME,
esas2r_proc_host->hostt->proc_dir);
proc_dir = scsi_template_proc_dir(esas2r_proc_host->hostt);
if (proc_dir)
remove_proc_entry(ATTONODE_NAME, proc_dir);
unregister_chrdev(esas2r_proc_major, ESAS2R_DRVR_NAME);
esas2r_proc_major = 0;
@ -728,11 +731,13 @@ const char *esas2r_info(struct Scsi_Host *sh)
esas2r_proc_major);
if (esas2r_proc_major > 0) {
struct proc_dir_entry *pde;
struct proc_dir_entry *proc_dir;
struct proc_dir_entry *pde = NULL;
pde = proc_create(ATTONODE_NAME, 0,
sh->hostt->proc_dir,
&esas2r_proc_ops);
proc_dir = scsi_template_proc_dir(sh->hostt);
if (proc_dir)
pde = proc_create(ATTONODE_NAME, 0, proc_dir,
&esas2r_proc_ops);
if (!pde) {
esas2r_log_dev(ESAS2R_LOG_WARN,

11
drivers/scsi/scsi_proc.c
View file

@ -83,6 +83,17 @@ static int proc_scsi_host_open(struct inode *inode, struct file *file)
4 * PAGE_SIZE);
}
/**
* scsi_template_proc_dir() - returns the procfs dir for a SCSI host template
* @sht: SCSI host template pointer.
*/
struct proc_dir_entry *
scsi_template_proc_dir(const struct scsi_host_template *sht)
{
return sht->proc_dir;
}
EXPORT_SYMBOL_GPL(scsi_template_proc_dir);
static const struct proc_ops proc_scsi_ops = {
.proc_open = proc_scsi_host_open,
.proc_release = single_release,

6
include/scsi/scsi_host.h
View file

@ -751,6 +751,12 @@ extern struct Scsi_Host *scsi_host_alloc(struct scsi_host_template *, int);
extern int __must_check scsi_add_host_with_dma(struct Scsi_Host *,
struct device *,
struct device *);
#if defined(CONFIG_SCSI_PROC_FS)
struct proc_dir_entry *
scsi_template_proc_dir(const struct scsi_host_template *sht);
#else
#define scsi_template_proc_dir(sht) NULL
#endif
extern void scsi_scan_host(struct Scsi_Host *);
extern void scsi_rescan_device(struct device *);
extern void scsi_remove_host(struct Scsi_Host *);