[PATCH v5 2/5] i2c: Add STM32F4 I2C driver

[wsa@the-dreams.de (Wolfram Sang)]

Hi,

> +config I2C_STM32F4
> +	tristate "STMicroelectronics STM32F4 I2C support"
> +	depends on ARCH_STM32  || COMPILE_TEST

Double space.

> +#define STM32F4_I2C_MIN_FREQ		2
> +#define STM32F4_I2C_MAX_FREQ		42

Those two must be unsigned to fix the build error (e.g. 2U) reported by
build-bot.

Also, I get the following build warnings:

  CC      drivers/i2c/busses/i2c-stm32f4.o
drivers/i2c/busses/i2c-stm32f4.c: In function ?stm32f4_i2c_handle_rx_addr?:
drivers/i2c/busses/i2c-stm32f4.c:445:6: warning: variable ?sr2? set but not used [-Wunused-but-set-variable]
  u32 sr2;
      ^~~
drivers/i2c/busses/i2c-stm32f4.c: In function ?stm32f4_i2c_isr_event?:
drivers/i2c/busses/i2c-stm32f4.c:496:41: warning: variable ?sr2? set but not used [-Wunused-but-set-variable]
  u32 real_status, possible_status, ien, sr2;

I assume those are reads to clear the register, so we really don't need
to save the value in a variable.

Rest is looking good.

Thanks,

   Wolfram

-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 819 bytes
Desc: not available
URL: <http://lists.infradead.org/pipermail/linux-arm-kernel/attachments/20161211/0379cc61/attachment.sig>