linux-kernel - [PATCH 1/3] usbatm: Allow sub-drivers to handle calls to atm_proc

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Date:	Tue, 30 Jan 2007 21:21:53 +0000
From:	Simon Arlott <simon@...ott.org>
To:	linux-kernel@...r.kernel.org
Subject: [PATCH 1/3] usbatm: Allow sub-drivers to handle calls to atm_proc_read.

usbatm only outputs basic information via the per-device /proc/net/atm/ file, this patch allows the device specific USB ATM drivers to replace the atm_proc_read function with their own.

Signed-off-by: Simon Arlott <simon@...e.lp0.eu>

---
 drivers/usb/atm/usbatm.c |    3 +++
 drivers/usb/atm/usbatm.h |    3 +++
 2 files changed, 6 insertions(+), 0 deletions(-)

diff --git a/drivers/usb/atm/usbatm.c b/drivers/usb/atm/usbatm.c
index ec63b0e..d91ed11 100644
--- a/drivers/usb/atm/usbatm.c
+++ b/drivers/usb/atm/usbatm.c
@@ -761,6 +761,9 @@ static int usbatm_atm_proc_read(struct a
 		return -ENODEV;
 	}
 
+	if (instance->driver->proc_read != NULL)
+		return instance->driver->proc_read(instance, atm_dev, pos, page);
+
 	if (!left--)
 		return sprintf(page, "%s\n", instance->description);
 
diff --git a/drivers/usb/atm/usbatm.h b/drivers/usb/atm/usbatm.h
index ff8551e..d3c0ee4 100644
--- a/drivers/usb/atm/usbatm.h
+++ b/drivers/usb/atm/usbatm.h
@@ -121,6 +121,9 @@ struct usbatm_driver {
 	/* cleanup ATM device ... can sleep, but can't fail */
 	void (*atm_stop) (struct usbatm_data *, struct atm_dev *);
 
+	/* called when the proc file is read */
+	int (*proc_read) (struct usbatm_data *, struct atm_dev *, loff_t * pos, char *page);
+
         int bulk_in;	/* bulk rx endpoint */
         int isoc_in;	/* isochronous rx endpoint */
         int bulk_out;	/* bulk tx endpoint */
-- 
1.4.3.1


-- 
Simon Arlott (subscribed to lkml, don't CC)
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