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This avoids potential build or link errors in code that conditionally calls these functions based on feature availability. This patch also drops the changes in commit 540c830212ed ("firmware: imx: remove duplicate scmi_imx_misc_ctrl_get()"). The original change aimed to simplify the handling of optional features by removing conditional stubs. However, the use of conditional stubs is necessary when CONFIG_IMX_SCMI_MISC_DRV is n, while consumer driver is set to y. This is not a matter of preserving legacy patterns, but rather to ensure that there is no link error whether for module or built-in. Fixes: 0b4f8a68b292 ("firmware: imx: Add i.MX95 MISC driver") Reviewed-by: Cristian Marussi Signed-off-by: Peng Fan --- include/linux/firmware/imx/sm.h | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/include/linux/firmware/imx/sm.h b/include/linux/firmware/imx/s= m.h index d4212bc42b2c17fb8f94d58856a75beb5611ce4b..99c15bbb46aa8329b5aa8e03017= e152074cdf492 100644 --- a/include/linux/firmware/imx/sm.h +++ b/include/linux/firmware/imx/sm.h @@ -26,8 +26,20 @@ #define SCMI_IMX94_CTRL_SAI3_MCLK 5U /*!< WAKE SAI3 MCLK */ #define SCMI_IMX94_CTRL_SAI4_MCLK 6U /*!< WAKE SAI4 MCLK */ =20 +#if IS_ENABLED(CONFIG_IMX_SCMI_MISC_DRV) int scmi_imx_misc_ctrl_get(u32 id, u32 *num, u32 *val); int scmi_imx_misc_ctrl_set(u32 id, u32 val); +#else +static inline int scmi_imx_misc_ctrl_get(u32 id, u32 *num, u32 *val) +{ + return -EOPNOTSUPP; +} + +static inline int scmi_imx_misc_ctrl_set(u32 id, u32 val) +{ + return -EOPNOTSUPP; +} +#endif =20 int scmi_imx_cpu_start(u32 cpuid, bool start); int scmi_imx_cpu_started(u32 cpuid, bool *started); 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This avoids potential build or link errors in code that conditionally calls these functions based on feature availability. Fixes: 7242bbf418f0 ("firmware: imx: Add i.MX95 SCMI LMM driver") Reviewed-by: Cristian Marussi Signed-off-by: Peng Fan --- include/linux/firmware/imx/sm.h | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) diff --git a/include/linux/firmware/imx/sm.h b/include/linux/firmware/imx/s= m.h index 99c15bbb46aa8329b5aa8e03017e152074cdf492..f2a72177bb37c1d46145a60710e= 3809641e0f5a2 100644 --- a/include/linux/firmware/imx/sm.h +++ b/include/linux/firmware/imx/sm.h @@ -56,7 +56,24 @@ enum scmi_imx_lmm_op { #define SCMI_IMX_LMM_OP_FORCEFUL 0 #define SCMI_IMX_LMM_OP_GRACEFUL BIT(0) =20 +#if IS_ENABLED(CONFIG_IMX_SCMI_LMM_DRV) int scmi_imx_lmm_operation(u32 lmid, enum scmi_imx_lmm_op op, u32 flags); int scmi_imx_lmm_info(u32 lmid, struct scmi_imx_lmm_info *info); int scmi_imx_lmm_reset_vector_set(u32 lmid, u32 cpuid, u32 flags, u64 vect= or); +#else +static inline int scmi_imx_lmm_operation(u32 lmid, enum scmi_imx_lmm_op op= , u32 flags) +{ + return -EOPNOTSUPP; +} + +static inline int scmi_imx_lmm_info(u32 lmid, struct scmi_imx_lmm_info *in= fo) +{ + return -EOPNOTSUPP; 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This avoids potential build or link errors in code that conditionally calls these functions based on feature availability. Fixes: 1055faa5d660 ("firmware: imx: Add i.MX95 SCMI CPU driver") Reviewed-by: Cristian Marussi Signed-off-by: Peng Fan --- include/linux/firmware/imx/sm.h | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) diff --git a/include/linux/firmware/imx/sm.h b/include/linux/firmware/imx/s= m.h index f2a72177bb37c1d46145a60710e3809641e0f5a2..a33b45027356751f4b8ad9b9136= f0dd302a82520 100644 --- a/include/linux/firmware/imx/sm.h +++ b/include/linux/firmware/imx/sm.h @@ -41,10 +41,28 @@ static inline int scmi_imx_misc_ctrl_set(u32 id, u32 va= l) } #endif =20 +#if IS_ENABLED(CONFIG_IMX_SCMI_CPU_DRV) int scmi_imx_cpu_start(u32 cpuid, bool start); int scmi_imx_cpu_started(u32 cpuid, bool *started); int scmi_imx_cpu_reset_vector_set(u32 cpuid, u64 vector, bool start, bool = boot, bool resume); +#else +static inline int scmi_imx_cpu_start(u32 cpuid, bool start) +{ + return -EOPNOTSUPP; +} + +static inline int scmi_imx_cpu_started(u32 cpuid, bool *started) +{ + return -EOPNOTSUPP; +} + +static inline int scmi_imx_cpu_reset_vector_set(u32 cpuid, u64 vector, boo= l start, + bool boot, bool resume) +{ + return -EOPNOTSUPP; +} +#endif =20 enum scmi_imx_lmm_op { SCMI_IMX_LMM_BOOT, --=20 2.37.1