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Date: Mon, 26 Mar 2007 09:11:43 -0700
From: David Brownell <david-b@...bell.net>
To: Linux Kernel list <linux-kernel@...r.kernel.org>
Cc: akpm@...ux-foundation.org, Jean Delvare <khali@...ux-fr.org>
Subject: [patch 2.6.21-rc5 3/3] layered parport code uses parport->dev
Update some of the layered parport_driver code to use parport->dev:
- i2c-parport (parent of i2c_adapter)
- spi_butterfly (parent of spi_master, allowing cruft removal)
- lp (creating class_device)
- ppdev (parent of parportN device)
- tipar (creating class_device)
There are still drivers that should be updated, like some of the input
drivers; but they won't be any worse off than they are today.
Signed-off-by: David Brownell <dbrownell@...rs.sourceforge.net>
---
drivers/char/lp.c | 2 +-
drivers/char/ppdev.c | 2 +-
drivers/char/tipar.c | 2 +-
drivers/i2c/busses/i2c-parport.c | 1 +
drivers/spi/spi_butterfly.c | 21 ++++-----------------
5 files changed, 8 insertions(+), 20 deletions(-)
Index: g26/drivers/spi/spi_butterfly.c
===================================================================
--- g26.orig/drivers/spi/spi_butterfly.c 2007-03-07 10:10:33.000000000 -0800
+++ g26/drivers/spi/spi_butterfly.c 2007-03-07 11:17:26.000000000 -0800
@@ -20,7 +20,7 @@
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/delay.h>
-#include <linux/platform_device.h>
+#include <linux/device.h>
#include <linux/parport.h>
#include <linux/sched.h>
@@ -237,24 +237,16 @@ static void butterfly_attach(struct parp
int status;
struct butterfly *pp;
struct spi_master *master;
- struct platform_device *pdev;
+ struct device *dev = p->physport->dev;
- if (butterfly)
+ if (butterfly || !dev)
return;
/* REVISIT: this just _assumes_ a butterfly is there ... no probe,
* and no way to be selective about what it binds to.
*/
- /* FIXME where should master->cdev.dev come from?
- * e.g. /sys/bus/pnp0/00:0b, some PCI thing, etc
- * setting up a platform device like this is an ugly kluge...
- */
- pdev = platform_device_register_simple("butterfly", -1, NULL, 0);
- if (IS_ERR(pdev))
- return;
-
- master = spi_alloc_master(&pdev->dev, sizeof *pp);
+ master = spi_alloc_master(dev, sizeof *pp);
if (!master) {
status = -ENOMEM;
goto done;
@@ -366,14 +358,12 @@ clean1:
clean0:
(void) spi_master_put(pp->bitbang.master);
done:
- platform_device_unregister(pdev);
pr_debug("%s: butterfly probe, fail %d\n", p->name, status);
}
static void butterfly_detach(struct parport *p)
{
struct butterfly *pp;
- struct platform_device *pdev;
int status;
/* FIXME this global is ugly ... but, how to quickly get from
@@ -386,7 +376,6 @@ static void butterfly_detach(struct parp
butterfly = NULL;
/* stop() unregisters child devices too */
- pdev = to_platform_device(pp->bitbang.master->cdev.dev);
status = spi_bitbang_stop(&pp->bitbang);
/* turn off VCC */
@@ -397,8 +386,6 @@ static void butterfly_detach(struct parp
parport_unregister_device(pp->pd);
(void) spi_master_put(pp->bitbang.master);
-
- platform_device_unregister(pdev);
}
static struct parport_driver butterfly_driver = {
Index: g26/drivers/i2c/busses/i2c-parport.c
===================================================================
--- g26.orig/drivers/i2c/busses/i2c-parport.c 2007-03-07 10:10:31.000000000 -0800
+++ g26/drivers/i2c/busses/i2c-parport.c 2007-03-07 11:14:35.000000000 -0800
@@ -175,6 +175,7 @@ static void i2c_parport_attach (struct p
adapter->algo_data.getscl = NULL;
adapter->algo_data.data = port;
adapter->adapter.algo_data = &adapter->algo_data;
+ adapter->adapter.dev.parent = port->physport->dev;
if (parport_claim_or_block(adapter->pdev) < 0) {
printk(KERN_ERR "i2c-parport: Could not claim parallel port\n");
Index: g26/drivers/char/ppdev.c
===================================================================
--- g26.orig/drivers/char/ppdev.c 2007-03-07 10:10:31.000000000 -0800
+++ g26/drivers/char/ppdev.c 2007-03-07 11:14:35.000000000 -0800
@@ -752,7 +752,7 @@ static const struct file_operations pp_f
static void pp_attach(struct parport *port)
{
- device_create(ppdev_class, NULL, MKDEV(PP_MAJOR, port->number),
+ device_create(ppdev_class, port->dev, MKDEV(PP_MAJOR, port->number),
"parport%d", port->number);
}
Index: g26/drivers/char/lp.c
===================================================================
--- g26.orig/drivers/char/lp.c 2007-03-07 10:10:31.000000000 -0800
+++ g26/drivers/char/lp.c 2007-03-07 11:14:35.000000000 -0800
@@ -803,7 +803,7 @@ static int lp_register(int nr, struct pa
if (reset)
lp_reset(nr);
- class_device_create(lp_class, NULL, MKDEV(LP_MAJOR, nr), NULL,
+ class_device_create(lp_class, NULL, MKDEV(LP_MAJOR, nr), port->dev,
"lp%d", nr);
printk(KERN_INFO "lp%d: using %s (%s).\n", nr, port->name,
Index: g26/drivers/char/tipar.c
===================================================================
--- g26.orig/drivers/char/tipar.c 2007-03-07 10:10:31.000000000 -0800
+++ g26/drivers/char/tipar.c 2007-03-07 11:14:35.000000000 -0800
@@ -442,7 +442,7 @@ tipar_register(int nr, struct parport *p
}
class_device_create(tipar_class, NULL, MKDEV(TIPAR_MAJOR,
- TIPAR_MINOR + nr), NULL, "par%d", nr);
+ TIPAR_MINOR + nr), port->dev, "par%d", nr);
/* Display informations */
pr_info("tipar%d: using %s (%s)\n", nr, port->name, (port->irq ==
-
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