Messages in this thread | | | Date | Mon, 1 Jan 2018 16:19:07 -0800 | From | Bjorn Andersson <> | Subject | Re: [RESEND PATCH v2 03/15] ASoC: qcom: qdsp6: Add common qdsp6 helper functions |
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On Thu 14 Dec 09:33 PST 2017, srinivas.kandagatla@linaro.org wrote: > +static inline int q6dsp_map_channels(u8 *ch_map, int ch) > +{ > + memset(ch_map, 0, PCM_FORMAT_MAX_NUM_CHANNEL);
This implies that ch_map is always an array of PCM_FORMAT_MAX_NUM_CHANNEL elements. As such it would be better to express this in the prototype; i.e u8 ch_map[PCM_FORMAT_MAX_NUM_CHANNEL]
> + > + if (ch == 1) {
This is a switch statement.
> + ch_map[0] = PCM_CHANNEL_FC; > + } else if (ch == 2) { [..] > +struct adsp_err_code { > + int lnx_err_code;
Indentation, and these could be given more succinct names.
> + char *adsp_err_str; > +}; > + > +static struct adsp_err_code adsp_err_code_info[ADSP_ERR_MAX+1] = { > + { 0, ADSP_EOK_STR}, > + { -ENOTRECOVERABLE, ADSP_EFAILED_STR}, > + { -EINVAL, ADSP_EBADPARAM_STR}, > + { -ENOSYS, ADSP_EUNSUPPORTED_STR}, > + { -ENOPROTOOPT, ADSP_EVERSION_STR}, > + { -ENOTRECOVERABLE, ADSP_EUNEXPECTED_STR}, > + { -ENOTRECOVERABLE, ADSP_EPANIC_STR}, > + { -ENOSPC, ADSP_ENORESOURCE_STR}, > + { -EBADR, ADSP_EHANDLE_STR}, > + { -EALREADY, ADSP_EALREADY_STR}, > + { -EPERM, ADSP_ENOTREADY_STR}, > + { -EINPROGRESS, ADSP_EPENDING_STR}, > + { -EBUSY, ADSP_EBUSY_STR}, > + { -ECANCELED, ADSP_EABORTED_STR}, > + { -EAGAIN, ADSP_EPREEMPTED_STR}, > + { -EAGAIN, ADSP_ECONTINUE_STR}, > + { -EAGAIN, ADSP_EIMMEDIATE_STR}, > + { -EAGAIN, ADSP_ENOTIMPL_STR}, > + { -ENODATA, ADSP_ENEEDMORE_STR}, > + { -EADV, ADSP_ERR_MAX_STR},
This, element 0x13, is not listed among the defined errors. Is this a placeholder?
How about making this even more descriptive by using the format
[ADSP_EBADPARAM] = { -EINVAL, ADSP_EBADPARAM_STR },
That way the mapping table is self-describing.
And you can use ARRAY_SIZE() instead of specifying the fixed size of ADSP_ERR_MAX + 1...
> + { -ENOMEM, ADSP_ENOMEMORY_STR}, > + { -ENODEV, ADSP_ENOTEXIST_STR}, > + { -EADV, ADSP_ERR_MAX_STR},
"Advertise error"?
> +}; > + > +static inline int adsp_err_get_lnx_err_code(u32 adsp_error)
Can this be made internal to some c-file? So that any third party deals only with linux error codes?
How about renaming this q6dsp_errno()?
> +{ > + if (adsp_error > ADSP_ERR_MAX) > + return adsp_err_code_info[ADSP_ERR_MAX].lnx_err_code; > + else > + return adsp_err_code_info[adsp_error].lnx_err_code;
I think this would look better if you assign a local variable and have a single return. And just hard code the "invalid error code" errno, rather than looking up ADSP_ERR_MAX in the list.
> +} > + > +static inline char *adsp_err_get_err_str(u32 adsp_error)
q6dsp_strerror(), to match strerror(3)?
> +{ > + if (adsp_error > ADSP_ERR_MAX) > + return adsp_err_code_info[ADSP_ERR_MAX].adsp_err_str; > + else > + return adsp_err_code_info[adsp_error].adsp_err_str;
And I do think that, as with strerror, this should return a human readable error, not the stringified define.
> +}
I'm puzzled to why these helper functions lives in a header file, at least some aspects of this would better be hidden...
Regards, Bjorn
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