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authorAlexey Dobriyan <adobriyan@gmail.com>2010-01-14 03:10:54 -0800
committerDavid S. Miller <davem@davemloft.net>2010-01-14 03:10:54 -0800
commit9a58a80a701bdb2d220cdab4914218df5b48d781 (patch)
tree01eeb65ec70f22ec326d0938d002cc6a2aec73e8 /drivers/isdn/hardware/eicon/capimain.c
parent508e14b4a4fb1a824a14f2c5b8d7df67b313f8e4 (diff)
proc_fops: convert drivers/isdn/ to seq_file
Convert code away from ->read_proc/->write_proc interfaces. Switch to proc_create()/proc_create_data() which make addition of proc entries reliable wrt NULL ->proc_fops, NULL ->data and so on. Problem with ->read_proc et al is described here commit 786d7e1612f0b0adb6046f19b906609e4fe8b1ba "Fix rmmod/read/write races in /proc entries" [akpm@linux-foundation.org: CONFIG_PROC_FS=n build fix] Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: Tilman Schmidt <tilman@imap.cc> Signed-off-by: Karsten Keil <keil@b1-systems.de> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/isdn/hardware/eicon/capimain.c')
-rw-r--r--drivers/isdn/hardware/eicon/capimain.c40
1 files changed, 24 insertions, 16 deletions
diff --git a/drivers/isdn/hardware/eicon/capimain.c b/drivers/isdn/hardware/eicon/capimain.c
index 98fcdfc7ca5..0f073cd7376 100644
--- a/drivers/isdn/hardware/eicon/capimain.c
+++ b/drivers/isdn/hardware/eicon/capimain.c
@@ -13,6 +13,7 @@
#include <linux/module.h>
#include <linux/init.h>
#include <asm/uaccess.h>
+#include <linux/seq_file.h>
#include <linux/skbuff.h>
#include "os_capi.h"
@@ -75,25 +76,32 @@ void diva_os_free_message_buffer(diva_os_message_buffer_s * dmb)
/*
* proc function for controller info
*/
-static int diva_ctl_read_proc(char *page, char **start, off_t off,
- int count, int *eof, struct capi_ctr *ctrl)
+static int diva_ctl_proc_show(struct seq_file *m, void *v)
{
+ struct capi_ctr *ctrl = m->private;
diva_card *card = (diva_card *) ctrl->driverdata;
- int len = 0;
-
- len += sprintf(page + len, "%s\n", ctrl->name);
- len += sprintf(page + len, "Serial No. : %s\n", ctrl->serial);
- len += sprintf(page + len, "Id : %d\n", card->Id);
- len += sprintf(page + len, "Channels : %d\n", card->d.channels);
-
- if (off + count >= len)
- *eof = 1;
- if (len < off)
- return 0;
- *start = page + off;
- return ((count < len - off) ? count : len - off);
+
+ seq_printf(m, "%s\n", ctrl->name);
+ seq_printf(m, "Serial No. : %s\n", ctrl->serial);
+ seq_printf(m, "Id : %d\n", card->Id);
+ seq_printf(m, "Channels : %d\n", card->d.channels);
+
+ return 0;
+}
+
+static int diva_ctl_proc_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, diva_ctl_proc_show, NULL);
}
+static const struct file_operations diva_ctl_proc_fops = {
+ .owner = THIS_MODULE,
+ .open = diva_ctl_proc_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+};
+
/*
* set additional os settings in capi_ctr struct
*/
@@ -102,7 +110,7 @@ void diva_os_set_controller_struct(struct capi_ctr *ctrl)
ctrl->driver_name = DRIVERLNAME;
ctrl->load_firmware = NULL;
ctrl->reset_ctr = NULL;
- ctrl->ctr_read_proc = diva_ctl_read_proc;
+ ctrl->proc_fops = &diva_ctl_proc_fops;
ctrl->owner = THIS_MODULE;
}