linux-kernel - Re: [PATCH 3/3] UIO: Hilscher CIF card driver (with patch)

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Message-Id: <200704292144.32958.hjk@linutronix.de>
Date:	Sun, 29 Apr 2007 21:44:32 +0200
From:	Hans-Jürgen Koch <hjk@...utronix.de>
To:	Greg Kroah-Hartman <gregkh@...e.de>
Cc:	linux-kernel@...r.kernel.org, torvalds@...l.org
Subject: Re: [PATCH 3/3] UIO: Hilscher CIF card driver (with patch)

Am Samstag 28 April 2007 00:50 schrieb Greg Kroah-Hartman:

> +static int __devinit hilscher_pci_probe(struct pci_dev *dev,
> +					const struct pci_device_id *id)
> +{
> +	struct uio_info *info;
> +
> +	info = kzalloc(sizeof(struct uio_info), GFP_KERNEL);
> +	if (!info)
> +		return -ENOMEM;
> +
> +	if (pci_enable_device(dev))
> +		goto out_free;
> +
> +	if (pci_request_regions(dev, "hilscher"))
> +		goto out_disable;
> +
> +	info->mem[0].addr = pci_resource_start(dev, 0);
> +	if (!info->mem[0].addr)
> +		goto out_release;
> +	info->mem[0].internal_addr = ioremap_nocache(pci_resource_start(dev, 0),
> +						     pci_resource_len(dev, 0));
> +	if (!info->mem[0].internal_addr)
> +		goto out_release;

Alan Cox pointed out (offlist) that ioremap_nocache() is unneccessary here.
This patch replaces it with ioremap():

Thanks, Alan!

hjk

Index: linux-2.6.22-rc/drivers/uio/uio_cif.c
===================================================================
--- linux-2.6.22-rc.orig/drivers/uio/uio_cif.c	2007-04-29 21:34:45.000000000 +0200
+++ linux-2.6.22-rc/drivers/uio/uio_cif.c	2007-04-29 21:36:31.000000000 +0200
@@ -64,9 +64,8 @@
 	info->mem[0].addr = pci_resource_start(dev, 0);
 	if (!info->mem[0].addr)
 		goto out_release;
-	info->mem[0].internal_addr = ioremap_nocache(
-						pci_resource_start(dev, 0),
-						pci_resource_len(dev, 0) );
+	info->mem[0].internal_addr = ioremap(pci_resource_start(dev, 0),
+					     pci_resource_len(dev, 0) );
 	if (!info->mem[0].internal_addr)
 		goto out_release;
 
-
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