* [PATCH v2 1/1] mfd: syscon: return -ENOSYS if CONFIG_MFD_SYSCON is not enabled
@ 2013-10-22 8:46 Peter Chen
2013-10-22 9:07 ` Lee Jones
0 siblings, 1 reply; 2+ messages in thread
From: Peter Chen @ 2013-10-22 8:46 UTC (permalink / raw)
To: linux-arm-kernel
Some platforms may not define CONFIG_MFD_SYSCON (or haven't syscon),
it can fix build error for these platforms.
Signed-off-by: Peter Chen <peter.chen@freescale.com>
---
Changes for v2:
- Using #ifdef instead of IS_ENABLED
- Using ENOSYS instead of ENXIO as return val
include/linux/mfd/syscon.h | 25 +++++++++++++++++++++++++
1 files changed, 25 insertions(+), 0 deletions(-)
diff --git a/include/linux/mfd/syscon.h b/include/linux/mfd/syscon.h
index b473577..8789fa3 100644
--- a/include/linux/mfd/syscon.h
+++ b/include/linux/mfd/syscon.h
@@ -17,10 +17,35 @@
struct device_node;
+#ifdef CONFIG_MFD_SYSCON
extern struct regmap *syscon_node_to_regmap(struct device_node *np);
extern struct regmap *syscon_regmap_lookup_by_compatible(const char *s);
extern struct regmap *syscon_regmap_lookup_by_pdevname(const char *s);
extern struct regmap *syscon_regmap_lookup_by_phandle(
struct device_node *np,
const char *property);
+#else
+static inline struct regmap *syscon_node_to_regmap(struct device_node *np)
+{
+ return ERR_PTR(-ENOSYS);
+}
+
+static inline struct regmap *syscon_regmap_lookup_by_compatible(const char *s)
+{
+ return ERR_PTR(-ENOSYS);
+}
+
+static inline struct regmap *syscon_regmap_lookup_by_pdevname(const char *s)
+{
+ return ERR_PTR(-ENOSYS);
+}
+
+static inline struct regmap *syscon_regmap_lookup_by_phandle(
+ struct device_node *np,
+ const char *property)
+{
+ return ERR_PTR(-ENOSYS);
+}
+#endif
+
#endif /* __LINUX_MFD_SYSCON_H__ */
--
1.7.1
^ permalink raw reply related [flat|nested] 2+ messages in thread
* [PATCH v2 1/1] mfd: syscon: return -ENOSYS if CONFIG_MFD_SYSCON is not enabled
2013-10-22 8:46 [PATCH v2 1/1] mfd: syscon: return -ENOSYS if CONFIG_MFD_SYSCON is not enabled Peter Chen
@ 2013-10-22 9:07 ` Lee Jones
0 siblings, 0 replies; 2+ messages in thread
From: Lee Jones @ 2013-10-22 9:07 UTC (permalink / raw)
To: linux-arm-kernel
On Tue, 22 Oct 2013, Peter Chen wrote:
> Some platforms may not define CONFIG_MFD_SYSCON (or haven't syscon),
> it can fix build error for these platforms.
>
> Signed-off-by: Peter Chen <peter.chen@freescale.com>
>
> ---
>
> Changes for v2:
> - Using #ifdef instead of IS_ENABLED
> - Using ENOSYS instead of ENXIO as return val
>
> include/linux/mfd/syscon.h | 25 +++++++++++++++++++++++++
> 1 files changed, 25 insertions(+), 0 deletions(-)
Applied, thanks.
--
Lee Jones
Linaro STMicroelectronics Landing Team Lead
Linaro.org ? Open source software for ARM SoCs
Follow Linaro: Facebook | Twitter | Blog
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