diff options
author | Thomas Zimmermann <tzimmermann@suse.de> | 2023-10-11 09:50:59 +0200 |
---|---|---|
committer | Thomas Zimmermann <tzimmermann@suse.de> | 2023-10-11 09:50:59 +0200 |
commit | 57390019b68b83f96eb98f490367b9df1f2d77cb (patch) | |
tree | e6d4b6c75efdd2d7fb7d37f980688c491be3ff6a /include/linux/ioremap.h | |
parent | e5f9d543419c78ac58f3b3557bc5a76b20ff600b (diff) | |
parent | 389af786f92ecdff35883551d54bf4e507ffcccb (diff) |
Merge drm/drm-next into drm-misc-next
Updating drm-misc-next to the state of Linux v6.6-rc2.
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Diffstat (limited to 'include/linux/ioremap.h')
-rw-r--r-- | include/linux/ioremap.h | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/include/linux/ioremap.h b/include/linux/ioremap.h new file mode 100644 index 000000000000..f0e99fc7dd8b --- /dev/null +++ b/include/linux/ioremap.h @@ -0,0 +1,30 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef _LINUX_IOREMAP_H +#define _LINUX_IOREMAP_H + +#include <linux/kasan.h> +#include <asm/pgtable.h> + +#if defined(CONFIG_HAS_IOMEM) || defined(CONFIG_GENERIC_IOREMAP) +/* + * Ioremap often, but not always uses the generic vmalloc area. E.g on + * Power ARCH, it could have different ioremap space. + */ +#ifndef IOREMAP_START +#define IOREMAP_START VMALLOC_START +#define IOREMAP_END VMALLOC_END +#endif +static inline bool is_ioremap_addr(const void *x) +{ + unsigned long addr = (unsigned long)kasan_reset_tag(x); + + return addr >= IOREMAP_START && addr < IOREMAP_END; +} +#else +static inline bool is_ioremap_addr(const void *x) +{ + return false; +} +#endif + +#endif /* _LINUX_IOREMAP_H */ |