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H A D | Kconfig | diff 0f119a840b128f18b20608f0d33895e85f381105 Sun May 19 13:11:54 CEST 2013 Axel Lin <axel.lin@ingics.com> gpio: mcp23s08: Fix build error when CONFIG_SPI_MASTER=y && CONFIG_I2C=m
This patch fixes below build error when CONFIG_SPI_MASTER=y && CONFIG_I2C=m && CONFIG_GPIO_MCP23S08=y.
LD init/built-in.o drivers/built-in.o: In function `mcp23017_write': clkdev.c:(.text+0x1e14): undefined reference to `i2c_smbus_write_word_data' drivers/built-in.o: In function `mcp23017_read': clkdev.c:(.text+0x1e24): undefined reference to `i2c_smbus_read_word_data' drivers/built-in.o: In function `mcp23008_write': clkdev.c:(.text+0x1e8c): undefined reference to `i2c_smbus_write_byte_data' drivers/built-in.o: In function `mcp23008_read': clkdev.c:(.text+0x1e98): undefined reference to `i2c_smbus_read_byte_data' drivers/built-in.o: In function `mcp23008_read_regs': clkdev.c:(.text+0x1ed0): undefined reference to `i2c_smbus_read_byte_data' drivers/built-in.o: In function `mcp23s08_init': clkdev.c:(.init.text+0x30): undefined reference to `i2c_register_driver' drivers/built-in.o: In function `mcp23s08_exit': clkdev.c:(.exit.text+0x30): undefined reference to `i2c_del_driver' make: *** [vmlinux] Error 1
When CONFIG_I2C=m, meaning we can't build the drivers in with I2C support. Thus don't allow the drivers to be compiled as built-in when CONFIG_I2C=m.
The real fix though is to break the driver apart into a SPI part, an I2C part and a common part. But that's something for 3.11 while this is something for 3.10/stable.
Signed-off-by: Axel Lin <axel.lin@ingics.com> Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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