Re: [LINUX PATCH v3] spi: spi-mem: Fix build error without CONFIG_SPI_MEM

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On 2019/4/10 19:57, Naga Sureshkumar Relli wrote:
> From: YueHaibing <yuehaibing@xxxxxxxxxx>
> 
> When building with CONFIG_SPI_MEM is not set
> gc warns this:
> 
> drivers/spi/spi-zynq-qspi.o: In function `zynq_qspi_supports_op':
> spi-zynq-qspi.c:(.text+0x1da): undefined reference to `spi_mem_default_supports_op'
> 
> Fixes: 67dca5e580f1 ("spi: spi-mem: Add support for Zynq QSPI controller")
> Signed-off-by: YueHaibing <yuehaibing@xxxxxxxxxx>
> Signed-off-by: Naga Sureshkumar Relli <naga.sureshkumar.relli@xxxxxxxxxx>
> ---
> Changes in v3
>  - Updated the Author name
>  - Removed extra line between Fixes and rest of the tags
> Changes in v2
>  - Added static inline to the function spi_mem_default_supports_op();
> ---
>  include/linux/spi/spi-mem.h | 8 +++++---
>  1 file changed, 5 insertions(+), 3 deletions(-)
> 
> diff --git a/include/linux/spi/spi-mem.h b/include/linux/spi/spi-mem.h
> index eb71e9d..bf399f2 100644
> --- a/include/linux/spi/spi-mem.h
> +++ b/include/linux/spi/spi-mem.h
> @@ -295,6 +295,8 @@ int spi_controller_dma_map_mem_op_data(struct spi_controller *ctlr,
>  void spi_controller_dma_unmap_mem_op_data(struct spi_controller *ctlr,
>  					  const struct spi_mem_op *op,
>  					  struct sg_table *sg);
> +bool spi_mem_default_supports_op(struct spi_mem *mem,
> +				 const struct spi_mem_op *op);
>  #else
>  static inline int
>  spi_controller_dma_map_mem_op_data(struct spi_controller *ctlr,
> @@ -310,6 +312,9 @@ spi_controller_dma_unmap_mem_op_data(struct spi_controller *ctlr,
>  				     struct sg_table *sg)
>  {
>  }
> +
> +static inline bool spi_mem_default_supports_op(struct spi_mem *mem,
> +				 const struct spi_mem_op *op);

Here miss a Function body, right?

+static inline bool
+spi_mem_default_supports_op(struct spi_mem *mem,
+			    const struct spi_mem_op *op)
+{
+	return false;
+}

>  #endif /* CONFIG_SPI_MEM */
>  
>  int spi_mem_adjust_op_size(struct spi_mem *mem, struct spi_mem_op *op);
> @@ -336,9 +341,6 @@ int spi_mem_driver_register_with_owner(struct spi_mem_driver *drv,
>  
>  void spi_mem_driver_unregister(struct spi_mem_driver *drv);
>  
> -bool spi_mem_default_supports_op(struct spi_mem *mem,
> -				 const struct spi_mem_op *op);
> -
>  #define spi_mem_driver_register(__drv)                                  \
>  	spi_mem_driver_register_with_owner(__drv, THIS_MODULE)
>  
> 




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