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| author | Lukas Wunner <lukas@wunner.de> | 2016-02-10 14:17:41 +0100 |
|---|---|---|
| committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2016-02-11 09:23:59 +0100 |
| commit | b7172119714781d15128cd1ae029bd028b0bf37a (patch) | |
| tree | dfd7d402b2b587d8ed485ad04dec02b143e91aa9 /include/linux/apple-gmux.h | |
| parent | 3c5b267314ff00b4a9536769cc1aafc71384e559 (diff) | |
| download | lwn-b7172119714781d15128cd1ae029bd028b0bf37a.tar.gz lwn-b7172119714781d15128cd1ae029bd028b0bf37a.zip | |
apple-gmux: Fix build breakage if !CONFIG_ACPI
The DRM drivers i915, nouveau and radeon may be compiled with
CONFIG_ACPI not set, in which case acpi_dev_present() is undefined.
Add a no-op stub for apple_gmux_present() which is used if
CONFIG_APPLE_GMUX is not enabled to avoid build breakage.
(CONFIG_APPLE_GMUX depends on CONFIG_ACPI.)
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Lukas Wunner <lukas@wunner.de>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/20160210131741.GA15492@wunner.de
Diffstat (limited to 'include/linux/apple-gmux.h')
| -rw-r--r-- | include/linux/apple-gmux.h | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/include/linux/apple-gmux.h b/include/linux/apple-gmux.h index feebc2840462..b2d32e01dfe4 100644 --- a/include/linux/apple-gmux.h +++ b/include/linux/apple-gmux.h @@ -22,6 +22,8 @@ #define GMUX_ACPI_HID "APP000B" +#if IS_ENABLED(CONFIG_APPLE_GMUX) + /** * apple_gmux_present() - detect if gmux is built into the machine * @@ -33,7 +35,16 @@ */ static inline bool apple_gmux_present(void) { - return IS_ENABLED(CONFIG_APPLE_GMUX) && acpi_dev_present(GMUX_ACPI_HID); + return acpi_dev_present(GMUX_ACPI_HID); } +#else /* !CONFIG_APPLE_GMUX */ + +static inline bool apple_gmux_present(void) +{ + return false; +} + +#endif /* !CONFIG_APPLE_GMUX */ + #endif /* LINUX_APPLE_GMUX_H */ |