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Code Issues Releases Wiki Activity

driver core: Drop helper devm_platform_ioremap_resource_wc()

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Since the macro was introduced in 2019 (commit bb6243b4f7 ("drivers:
platform: provide devm_platform_ioremap_resource_wc()") there is only a
single user which hardly justifies the function for the small task it
provides.

So drop the helper and open-code it in the only user. Adapt the non-wc
case accordingly.

For a all-mod-config build on amd64 this change introduces the following
changes according to bloat-o-meter:

add/remove: 0/1 grow/shrink: 1/0 up/down: 20/-252 (-232)
Function                                     old     new   delta
devm_platform_ioremap_resource_wc            252       -    -252
sram_probe                                   796     816     +20

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Link: https://lore.kernel.org/r/20210525103711.956438-1-u.kleine-koenig@pengutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Uwe Kleine-König 2021-05-25 12:37:11 +02:00 committed by Greg Kroah-Hartman
parent d52ff34ee9
commit 39b27e89a7
4 changed files with 4 additions and 26 deletions
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1
Documentation/driver-api/driver-model/devres.rst
View file

@ -314,7 +314,6 @@ IOMAP
devm_ioremap_resource() : checks resource, requests memory region, ioremaps
devm_ioremap_resource_wc()
devm_platform_ioremap_resource() : calls devm_ioremap_resource() for platform device
devm_platform_ioremap_resource_wc()
devm_platform_ioremap_resource_byname()
devm_platform_get_and_ioremap_resource()
devm_iounmap()

20
drivers/base/platform.c
View file

@ -124,26 +124,6 @@ void __iomem *devm_platform_ioremap_resource(struct platform_device *pdev,
}
EXPORT_SYMBOL_GPL(devm_platform_ioremap_resource);
/**
* devm_platform_ioremap_resource_wc - write-combined variant of
* devm_platform_ioremap_resource()
*
* @pdev: platform device to use both for memory resource lookup as well as
* resource management
* @index: resource index
*
* Return: a pointer to the remapped memory or an ERR_PTR() encoded error code
* on failure.
*/
void __iomem *devm_platform_ioremap_resource_wc(struct platform_device *pdev,
unsigned int index)
{
struct resource *res;
res = platform_get_resource(pdev, IORESOURCE_MEM, index);
return devm_ioremap_resource_wc(&pdev->dev, res);
}
/**
* devm_platform_ioremap_resource_byname - call devm_ioremap_resource for
* a platform device, retrieve the

6
drivers/misc/sram.c
View file

@ -341,6 +341,7 @@ static int sram_probe(struct platform_device *pdev)
{
struct sram_dev *sram;
int ret;
struct resource *res;
int (*init_func)(void);
sram = devm_kzalloc(&pdev->dev, sizeof(*sram), GFP_KERNEL);
@ -349,10 +350,11 @@ static int sram_probe(struct platform_device *pdev)
sram->dev = &pdev->dev;
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (of_property_read_bool(pdev->dev.of_node, "no-memory-wc"))
sram->virt_base = devm_platform_ioremap_resource(pdev, 0);
sram->virt_base = devm_ioremap_resource(&pdev->dev, res);
else
sram->virt_base = devm_platform_ioremap_resource_wc(pdev, 0);
sram->virt_base = devm_ioremap_resource_wc(&pdev->dev, res);
if (IS_ERR(sram->virt_base)) {
dev_err(&pdev->dev, "could not map SRAM registers\n");
return PTR_ERR(sram->virt_base);

3
include/linux/platform_device.h
View file

@ -66,9 +66,6 @@ extern void __iomem *
devm_platform_ioremap_resource(struct platform_device *pdev,
unsigned int index);
extern void __iomem *
devm_platform_ioremap_resource_wc(struct platform_device *pdev,
unsigned int index);
extern void __iomem *
devm_platform_ioremap_resource_byname(struct platform_device *pdev,
const char *name);
extern int platform_get_irq(struct platform_device *, unsigned int);