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Message-Id: <200607312238.54582.mb@bu3sch.de>
Date: Mon, 31 Jul 2006 22:38:54 +0200
From: Michael Buesch <mb@...sch.de>
To: David Brownell <david-b@...bell.net>, Andrew Morton <akpm@...l.org>
Cc: Linux Kernel list <linux-kernel@...r.kernel.org>
Subject: Re: [patch 2.6.18-rc3] build fixes: omap-rng
On Monday 31 July 2006 16:24, David Brownell wrote:
> The linux-omap tree has the old version, which doesn't have these
> build errors but doesn't use the new RNG framework code ... note
> that this driver seems new to 2.6.18 kernels.
(Next time inline the patch, please)
Thanks for this patch. I don't have omap hardware so I did
not notice that it does not build.
Andrew, please apply to -mm and think about queueing it for 2.6.18.
Thanks.
--
Seems like the omap-rng driver in the main tree predates the switch
from <asm/hardware/clock.h> to <linux/clk.h> ... now it builds OK.
Signed-off-by: David Brownell <dbrownell@...rs.sourceforge.net>
Signed-off-by: Michael Buesch <mb@...sch.de>
Index: o26/drivers/char/hw_random/omap-rng.c
===================================================================
--- o26.orig/drivers/char/hw_random/omap-rng.c 2006-07-30 22:08:58.000000000 -0700
+++ o26/drivers/char/hw_random/omap-rng.c 2006-07-31 04:38:58.000000000 -0700
@@ -25,12 +25,12 @@
#include <linux/module.h>
#include <linux/init.h>
#include <linux/random.h>
+#include <linux/clk.h>
#include <linux/err.h>
-#include <linux/device.h>
+#include <linux/platform_device.h>
#include <linux/hw_random.h>
#include <asm/io.h>
-#include <asm/hardware/clock.h>
#define RNG_OUT_REG 0x00 /* Output register */
#define RNG_STAT_REG 0x04 /* Status register
@@ -52,7 +52,7 @@
static void __iomem *rng_base;
static struct clk *rng_ick;
-static struct device *rng_dev;
+static struct platform_device *rng_dev;
static u32 omap_rng_read_reg(int reg)
{
@@ -83,9 +83,8 @@ static struct hwrng omap_rng_ops = {
.data_read = omap_rng_data_read,
};
-static int __init omap_rng_probe(struct device *dev)
+static int __init omap_rng_probe(struct platform_device *pdev)
{
- struct platform_device *pdev = to_platform_device(dev);
struct resource *res, *mem;
int ret;
@@ -95,16 +94,14 @@ static int __init omap_rng_probe(struct
*/
BUG_ON(rng_dev);
- if (cpu_is_omap24xx()) {
+ if (cpu_is_omap24xx()) {
rng_ick = clk_get(NULL, "rng_ick");
if (IS_ERR(rng_ick)) {
- dev_err(dev, "Could not get rng_ick\n");
+ dev_err(&pdev->dev, "Could not get rng_ick\n");
ret = PTR_ERR(rng_ick);
return ret;
- }
- else {
- clk_use(rng_ick);
- }
+ } else
+ clk_enable(rng_ick);
}
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
@@ -117,7 +114,7 @@ static int __init omap_rng_probe(struct
if (mem == NULL)
return -EBUSY;
- dev_set_drvdata(dev, mem);
+ dev_set_drvdata(&pdev->dev, mem);
rng_base = (u32 __iomem *)io_p2v(res->start);
ret = hwrng_register(&omap_rng_ops);
@@ -127,25 +124,25 @@ static int __init omap_rng_probe(struct
return ret;
}
- dev_info(dev, "OMAP Random Number Generator ver. %02x\n",
+ dev_info(&pdev->dev, "OMAP Random Number Generator ver. %02x\n",
omap_rng_read_reg(RNG_REV_REG));
omap_rng_write_reg(RNG_MASK_REG, 0x1);
- rng_dev = dev;
+ rng_dev = pdev;
return 0;
}
-static int __exit omap_rng_remove(struct device *dev)
+static int __exit omap_rng_remove(struct platform_device *pdev)
{
- struct resource *mem = dev_get_drvdata(dev);
+ struct resource *mem = dev_get_drvdata(&pdev->dev);
hwrng_unregister(&omap_rng_ops);
omap_rng_write_reg(RNG_MASK_REG, 0x0);
if (cpu_is_omap24xx()) {
- clk_unuse(rng_ick);
+ clk_disable(rng_ick);
clk_put(rng_ick);
}
@@ -157,18 +154,16 @@ static int __exit omap_rng_remove(struct
#ifdef CONFIG_PM
-static int omap_rng_suspend(struct device *dev, pm_message_t message, u32 level)
+static int omap_rng_suspend(struct platform_device *pdev, pm_message_t message)
{
omap_rng_write_reg(RNG_MASK_REG, 0x0);
-
return 0;
}
-static int omap_rng_resume(struct device *dev, pm_message_t message, u32 level)
+static int omap_rng_resume(struct platform_device *pdev)
{
omap_rng_write_reg(RNG_MASK_REG, 0x1);
-
- return 1;
+ return 0;
}
#else
@@ -179,9 +174,11 @@ static int omap_rng_resume(struct device
#endif
-static struct device_driver omap_rng_driver = {
- .name = "omap_rng",
- .bus = &platform_bus_type,
+static struct platform_driver omap_rng_driver = {
+ .driver = {
+ .name = "omap_rng",
+ .owner = THIS_MODULE,
+ },
.probe = omap_rng_probe,
.remove = __exit_p(omap_rng_remove),
.suspend = omap_rng_suspend,
@@ -193,12 +190,12 @@ static int __init omap_rng_init(void)
if (!cpu_is_omap16xx() && !cpu_is_omap24xx())
return -ENODEV;
- return driver_register(&omap_rng_driver);
+ return platform_driver_register(&omap_rng_driver);
}
static void __exit omap_rng_exit(void)
{
- driver_unregister(&omap_rng_driver);
+ platform_driver_unregister(&omap_rng_driver);
}
module_init(omap_rng_init);
--
Greetings Michael.
-
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