On Fri 18 May 15:47 PDT 2018, Stephen Boyd wrote:
> This macro doesn't work, because it hides a local variable inside of the
> macro to hold the version and that variable name is called 'ver' and
> 'version' sometimes.
>
> Let's change this to be more explicit. Introduce three macros for the
> major, minor, and step of the version, and require callers to pass the
> version in to get the part of the version out. This way we don't hide
> local variables inside macros and things are less evil overall.
>
> Cc: Karthikeyan Ramasubramanian <kramasub@xxxxxxxxxxxxxx>
> Cc: Sagar Dharia <sdharia@xxxxxxxxxxxxxx>
> Cc: Girish Mahadevan <girishm@xxxxxxxxxxxxxx>
> Signed-off-by: Stephen Boyd <swboyd@xxxxxxxxxxxx>
I was expecting that someone referenced this macro, but I guess that's
coming?
Reviewed-by: Bjorn Andersson <bjorn.andersson@xxxxxxxxxx>
Regards,
Bjorn
> ---
> include/linux/qcom-geni-se.h | 13 ++++---------
> 1 file changed, 4 insertions(+), 9 deletions(-)
>
> diff --git a/include/linux/qcom-geni-se.h b/include/linux/qcom-geni-se.h
> index 5d6144977828..3bcd67fd5548 100644
> --- a/include/linux/qcom-geni-se.h
> +++ b/include/linux/qcom-geni-se.h
> @@ -225,19 +225,14 @@ struct geni_se {
> #define HW_VER_MINOR_SHFT 16
> #define HW_VER_STEP_MASK GENMASK(15, 0)
>
> +#define GENI_SE_VERSION_MAJOR(ver) ((ver & HW_VER_MAJOR_MASK) >> HW_VER_MAJOR_SHFT)
> +#define GENI_SE_VERSION_MINOR(ver) ((ver & HW_VER_MINOR_MASK) >> HW_VER_MINOR_SHFT)
> +#define GENI_SE_VERSION_STEP(ver) (ver & HW_VER_STEP_MASK)
> +
> #if IS_ENABLED(CONFIG_QCOM_GENI_SE)
>
> u32 geni_se_get_qup_hw_version(struct geni_se *se);
>
> -#define geni_se_get_wrapper_version(se, major, minor, step) do { \
> - u32 ver; \
> -\
> - ver = geni_se_get_qup_hw_version(se); \
> - major = (ver & HW_VER_MAJOR_MASK) >> HW_VER_MAJOR_SHFT; \
> - minor = (ver & HW_VER_MINOR_MASK) >> HW_VER_MINOR_SHFT; \
> - step = version & HW_VER_STEP_MASK; \
> -} while (0)
> -
> /**
> * geni_se_read_proto() - Read the protocol configured for a serial engine
> * @se: Pointer to the concerned serial engine.
> --
> Sent by a computer through tubes
>
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