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SubjectRe: [PATCH] spi: spi-mem: Fix build error without CONFIG_SPI_MEM
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On 08/04/19 8:09 PM, Yue Haibing wrote:
> From: YueHaibing <yuehaibing@huawei.com>
>
> 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@huawei.com>
> ---
> include/linux/spi/spi-mem.h | 14 +++++++++++---
> 1 file changed, 11 insertions(+), 3 deletions(-)
>
> diff --git a/include/linux/spi/spi-mem.h b/include/linux/spi/spi-mem.h
> index c845cd6..1941b84 100644
> --- a/include/linux/spi/spi-mem.h
> +++ b/include/linux/spi/spi-mem.h
> @@ -295,6 +295,10 @@ 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 +314,13 @@ spi_controller_dma_unmap_mem_op_data(struct spi_controller *ctlr,
> struct sg_table *sg)
> {
> }
> +
> +bool spi_mem_default_supports_op(struct spi_mem *mem,
> + const struct spi_mem_op *op)

This needs to be declared static inline to avoid multiple definitions.
Right?

> +{
> + return false;
> +}
> +
> #endif /* CONFIG_SPI_MEM */
>
> int spi_mem_adjust_op_size(struct spi_mem *mem, struct spi_mem_op *op);
> @@ -341,9 +352,6 @@ 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)
>
>

--
Regards
Vignesh

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