Well, Naga Sureshkumar Relli has post new patch based this, Pls ignore this. On 2019/4/10 20:13, Yue Haibing 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> > --- > v2: make stub helper static inline > --- > include/linux/spi/spi-mem.h | 15 ++++++++++++--- > 1 file changed, 12 insertions(+), 3 deletions(-) > > diff --git a/include/linux/spi/spi-mem.h b/include/linux/spi/spi-mem.h > index c845cd6..3d57db8 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 +314,14 @@ 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) > +{ > + return false; > +} > + > #endif /* CONFIG_SPI_MEM */ > > int spi_mem_adjust_op_size(struct spi_mem *mem, struct spi_mem_op *op); > @@ -341,9 +353,6 @@ 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) > >