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| author | Sascha Hauer <s.hauer@pengutronix.de> | 2016-02-18 11:01:59 +0100 |
|---|---|---|
| committer | Sascha Hauer <s.hauer@pengutronix.de> | 2016-02-23 08:15:57 +0100 |
| commit | fe7855bb4f2d82ac4559c46c586c2f29e9f123e2 (patch) | |
| tree | e249f3d4120db310564433797666907b425c9fe3 /include/driver.h | |
| parent | 8ee5479a28df0a3f3019419e46e9ee5c119a27bd (diff) | |
| download | barebox-fe7855bb4f2d82ac4559c46c586c2f29e9f123e2.tar.gz barebox-fe7855bb4f2d82ac4559c46c586c2f29e9f123e2.tar.xz | |
driver: Introduce dev_request_mem_resource
dev_request_mem_region returns a void * which shall be checked with
IS_ERR(), but in some cases the valid pointer returned clashes with
error values. This is especially the case on some Atmel SoCs.
This introduces dev_request_mem_resource which returns a struct resource
instead which in any case can be checked with IS_ERR(). It's the drivers
responsibility then to get the IOMEM pointer from the resource.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'include/driver.h')
| -rw-r--r-- | include/driver.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/include/driver.h b/include/driver.h index 31c673452f..5e2b88f315 100644 --- a/include/driver.h +++ b/include/driver.h @@ -203,10 +203,16 @@ void *dev_get_mem_region(struct device_d *dev, int num); /* * exlusively request register base 'num' for a device + * deprecated, use dev_request_mem_resource instead */ void __iomem *dev_request_mem_region(struct device_d *dev, int num); /* + * exlusively request resource 'num' for a device + */ +struct resource *dev_request_mem_resource(struct device_d *dev, int num); + +/* * exlusively request register base 'num' for a device * will return NULL on error * only used on platform like at91 where the Ressource address collision with |