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* uwb: struct device - replace bus_id with dev_name(), dev_set_name()
@ 2008-10-30 19:06 Kay Sievers
  2008-10-31 15:14 ` David Vrabel
  0 siblings, 1 reply; 2+ messages in thread
From: Kay Sievers @ 2008-10-30 19:06 UTC (permalink / raw)
  To: David Vrabel; +Cc: linux-kernel, Greg KH

This patch is part of a larger patch series which will remove
the "char bus_id[20]" name string from struct device. The device
name is managed in the kobject anyway, and without any size
limitation, and just needlessly copied into "struct device".

To set and read the device name dev_name(dev) and dev_set_name(dev)
must be used. If your code uses static kobjects, which it shouldn't
do, "const char *init_name" can be used to statically provide the
name the registered device should have. At registration time, the
init_name field is cleared, to enforce the use of dev_name(dev) to
access the device name at a later time.

We need to get rid of all occurrences of bus_id in the entire tree
to be able to enable the new interface. Please apply this patch,
and possibly convert any remaining remaining occurrences of bus_id.

We want to submit a patch to -next, which will remove bus_id from
"struct device", to find the remaining pieces to convert, and finally
switch over to the new api, which will remove the 20 bytes array
and does no longer have a size limitation.

Thanks,
Kay


From: Kay Sievers <kay.sievers@vrfy.org>
Subject: uwb: struct device - replace bus_id with dev_name(), dev_set_name()

Cc: David Vrabel <david.vrabel@csr.com>
Acked-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-Off-By: Kay Sievers <kay.sievers@vrfy.org>
---


diff --git a/drivers/uwb/umc-dev.c b/drivers/uwb/umc-dev.c
index aa44e1c..53207e1 100644
--- a/drivers/uwb/umc-dev.c
+++ b/drivers/uwb/umc-dev.c
@@ -31,8 +31,7 @@ struct umc_dev *umc_device_create(struct device *parent, int n)
 
 	umc = kzalloc(sizeof(struct umc_dev), GFP_KERNEL);
 	if (umc) {
-		snprintf(umc->dev.bus_id, sizeof(umc->dev.bus_id), "%s-%d",
-			 parent->bus_id, n);
+		dev_set_name(&umc->dev, "%s-%d", dev_name(parent), n);
 		umc->dev.parent  = parent;
 		umc->dev.bus     = &umc_bus_type;
 		umc->dev.release = umc_device_release;
diff --git a/drivers/uwb/whci.c b/drivers/uwb/whci.c
index 3df2388..e626467 100644
--- a/drivers/uwb/whci.c
+++ b/drivers/uwb/whci.c
@@ -111,7 +111,7 @@ static int whci_add_cap(struct whci_card *card, int n)
 		+ UWBCAPDATA_TO_OFFSET(capdata);
 	umc->resource.end    = umc->resource.start
 		+ (n == 0 ? 0x20 : UWBCAPDATA_TO_SIZE(capdata)) - 1;
-	umc->resource.name   = umc->dev.bus_id;
+	umc->resource.name   = dev_name(&umc->dev);
 	umc->resource.flags  = card->pci->resource[bar].flags;
 	umc->resource.parent = &card->pci->resource[bar];
 	umc->irq             = card->pci->irq;
diff --git a/include/linux/uwb/debug.h b/include/linux/uwb/debug.h
index a86a73f..67a2405 100644
--- a/include/linux/uwb/debug.h
+++ b/include/linux/uwb/debug.h
@@ -60,7 +60,7 @@ do {									\
 				snprintf(__head, sizeof(__head),	\
 					 "%s %s: ",			\
 					 dev_driver_string(__dev),	\
-					 __dev->bus_id);		\
+					 dev_name(__dev));		\
 		}							\
 		printk(KERN_ERR "%s%s" _tag ": " f, __head,		\
 			__func__, ## a);				\



^ permalink raw reply	[flat|nested] 2+ messages in thread

* Re: uwb: struct device - replace bus_id with dev_name(), dev_set_name()
  2008-10-30 19:06 uwb: struct device - replace bus_id with dev_name(), dev_set_name() Kay Sievers
@ 2008-10-31 15:14 ` David Vrabel
  0 siblings, 0 replies; 2+ messages in thread
From: David Vrabel @ 2008-10-31 15:14 UTC (permalink / raw)
  To: Kay Sievers; +Cc: linux-kernel, Greg KH

Kay Sievers wrote:
> This patch is part of a larger patch series which will remove
> the "char bus_id[20]" name string from struct device. The device
> name is managed in the kobject anyway, and without any size
> limitation, and just needlessly copied into "struct device".

Applied, thanks.

David
-- 
David Vrabel, Senior Software Engineer, Drivers
CSR, Churchill House, Cambridge Business Park,  Tel: +44 (0)1223 692562
Cowley Road, Cambridge, CB4 0WZ                 http://www.csr.com/

^ permalink raw reply	[flat|nested] 2+ messages in thread

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