From: Jaroslav Kysela Date: Thu, 26 Jun 2008 06:51:31 +0000 (+0200) Subject: [ALSA] Revert "alsa: add annotations to bitwise type snd_pcm_hw_param_t" X-Git-Tag: v2.6.27-rc1~1111^2~65 X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=eabe3228a80728a21f871ccc86c72c170ca1a2dc;p=linux-2.6 [ALSA] Revert "alsa: add annotations to bitwise type snd_pcm_hw_param_t" This reverts commit 36b34d2437104f323e09d7c6af6451d3c0b9c0cd. From: Al Viro WIW, *all* this stuff is not bitwise at all. For crying out loud, half of these types are routinely used as array indices and loop variables... If anything, we want a different set of allowed operations - subtraction between elements of type (yielding integer), addition/subtraction of integer types not bigger than ours (yielding our type), comparisons, assignments (=, +=, -=, passing to function as argument, return from function, initializers) and second/third arguments in ?:. With 0 *not* being allowed as a constant of such type. It's not bitwise; we may use the same infrastructure in sparse, but it should be a separate class of types (__attribute__((affine))). dma_addr_t is another candidate for the same treatment, but there we'll need helpers for conversions to hw-acceptable form (dma_to_le32(), etc.) and gradual conversion of drivers. ALSA ones and pm mess are absolutely straightforward cases, though. Signed-off-by: Jaroslav Kysela --- diff --git a/include/sound/asound.h b/include/sound/asound.h index 0309da2f11..3eaf155b85 100644 --- a/include/sound/asound.h +++ b/include/sound/asound.h @@ -302,8 +302,6 @@ typedef int __bitwise snd_pcm_hw_param_t; #define SNDRV_PCM_HW_PARAM_SUBFORMAT ((__force snd_pcm_hw_param_t) 2) /* Subformat */ #define SNDRV_PCM_HW_PARAM_FIRST_MASK SNDRV_PCM_HW_PARAM_ACCESS #define SNDRV_PCM_HW_PARAM_LAST_MASK SNDRV_PCM_HW_PARAM_SUBFORMAT -#define SNDRV_PCM_HW_PARAM_MASK_INDEX(var) \ - ((__force int)(var) - (__force int)SNDRV_PCM_HW_PARAM_FIRST_MASK) #define SNDRV_PCM_HW_PARAM_SAMPLE_BITS ((__force snd_pcm_hw_param_t) 8) /* Bits per sample */ #define SNDRV_PCM_HW_PARAM_FRAME_BITS ((__force snd_pcm_hw_param_t) 9) /* Bits per frame */ @@ -319,8 +317,6 @@ typedef int __bitwise snd_pcm_hw_param_t; #define SNDRV_PCM_HW_PARAM_TICK_TIME ((__force snd_pcm_hw_param_t) 19) /* Approx tick duration in us */ #define SNDRV_PCM_HW_PARAM_FIRST_INTERVAL SNDRV_PCM_HW_PARAM_SAMPLE_BITS #define SNDRV_PCM_HW_PARAM_LAST_INTERVAL SNDRV_PCM_HW_PARAM_TICK_TIME -#define SNDRV_PCM_HW_PARAM_INTERVAL_INDEX(var) \ - ((__force int)(var) - (__force int)SNDRV_PCM_HW_PARAM_FIRST_INTERVAL) #define SNDRV_PCM_HW_PARAMS_NORESAMPLE (1<<0) /* avoid rate resampling */ @@ -340,11 +336,11 @@ struct snd_mask { struct snd_pcm_hw_params { unsigned int flags; - struct snd_mask masks[ - SNDRV_PCM_HW_PARAM_MASK_INDEX(SNDRV_PCM_HW_PARAM_LAST_MASK) + 1]; + struct snd_mask masks[SNDRV_PCM_HW_PARAM_LAST_MASK - + SNDRV_PCM_HW_PARAM_FIRST_MASK + 1]; struct snd_mask mres[5]; /* reserved masks */ - struct snd_interval intervals[ - SNDRV_PCM_HW_PARAM_INTERVAL_INDEX(SNDRV_PCM_HW_PARAM_LAST_INTERVAL) + 1]; + struct snd_interval intervals[SNDRV_PCM_HW_PARAM_LAST_INTERVAL - + SNDRV_PCM_HW_PARAM_FIRST_INTERVAL + 1]; struct snd_interval ires[9]; /* reserved intervals */ unsigned int rmask; /* W: requested masks */ unsigned int cmask; /* R: changed masks */ diff --git a/include/sound/pcm.h b/include/sound/pcm.h index 5315b53f9b..51d58ccda2 100644 --- a/include/sound/pcm.h +++ b/include/sound/pcm.h @@ -209,10 +209,10 @@ struct snd_pcm_hw_rule { }; struct snd_pcm_hw_constraints { - struct snd_mask masks[ - SNDRV_PCM_HW_PARAM_MASK_INDEX(SNDRV_PCM_HW_PARAM_LAST_MASK) + 1]; - struct snd_interval intervals[ - SNDRV_PCM_HW_PARAM_INTERVAL_INDEX(SNDRV_PCM_HW_PARAM_LAST_INTERVAL) + 1]; + struct snd_mask masks[SNDRV_PCM_HW_PARAM_LAST_MASK - + SNDRV_PCM_HW_PARAM_FIRST_MASK + 1]; + struct snd_interval intervals[SNDRV_PCM_HW_PARAM_LAST_INTERVAL - + SNDRV_PCM_HW_PARAM_FIRST_INTERVAL + 1]; unsigned int rules_num; unsigned int rules_all; struct snd_pcm_hw_rule *rules; @@ -221,13 +221,13 @@ struct snd_pcm_hw_constraints { static inline struct snd_mask *constrs_mask(struct snd_pcm_hw_constraints *constrs, snd_pcm_hw_param_t var) { - return &constrs->masks[SNDRV_PCM_HW_PARAM_MASK_INDEX(var)]; + return &constrs->masks[var - SNDRV_PCM_HW_PARAM_FIRST_MASK]; } static inline struct snd_interval *constrs_interval(struct snd_pcm_hw_constraints *constrs, snd_pcm_hw_param_t var) { - return &constrs->intervals[SNDRV_PCM_HW_PARAM_INTERVAL_INDEX(var)]; + return &constrs->intervals[var - SNDRV_PCM_HW_PARAM_FIRST_INTERVAL]; } struct snd_ratnum { @@ -761,40 +761,40 @@ static inline void snd_pcm_trigger_done(struct snd_pcm_substream *substream, substream->runtime->trigger_master = master; } -static inline int hw_is_mask(snd_pcm_hw_param_t var) +static inline int hw_is_mask(int var) { - return (__force int)var >= (__force int)SNDRV_PCM_HW_PARAM_FIRST_MASK && - (__force int)var <= (__force int)SNDRV_PCM_HW_PARAM_LAST_MASK; + return var >= SNDRV_PCM_HW_PARAM_FIRST_MASK && + var <= SNDRV_PCM_HW_PARAM_LAST_MASK; } -static inline int hw_is_interval(snd_pcm_hw_param_t var) +static inline int hw_is_interval(int var) { - return (__force int)var >= (__force int)SNDRV_PCM_HW_PARAM_FIRST_INTERVAL && - (__force int)var <= (__force int)SNDRV_PCM_HW_PARAM_LAST_INTERVAL; + return var >= SNDRV_PCM_HW_PARAM_FIRST_INTERVAL && + var <= SNDRV_PCM_HW_PARAM_LAST_INTERVAL; } static inline struct snd_mask *hw_param_mask(struct snd_pcm_hw_params *params, snd_pcm_hw_param_t var) { - return ¶ms->masks[SNDRV_PCM_HW_PARAM_MASK_INDEX(var)]; + return ¶ms->masks[var - SNDRV_PCM_HW_PARAM_FIRST_MASK]; } static inline struct snd_interval *hw_param_interval(struct snd_pcm_hw_params *params, snd_pcm_hw_param_t var) { - return ¶ms->intervals[SNDRV_PCM_HW_PARAM_INTERVAL_INDEX(var)]; + return ¶ms->intervals[var - SNDRV_PCM_HW_PARAM_FIRST_INTERVAL]; } static inline const struct snd_mask *hw_param_mask_c(const struct snd_pcm_hw_params *params, snd_pcm_hw_param_t var) { - return ¶ms->masks[SNDRV_PCM_HW_PARAM_MASK_INDEX(var)]; + return ¶ms->masks[var - SNDRV_PCM_HW_PARAM_FIRST_MASK]; } static inline const struct snd_interval *hw_param_interval_c(const struct snd_pcm_hw_params *params, snd_pcm_hw_param_t var) { - return ¶ms->intervals[SNDRV_PCM_HW_PARAM_INTERVAL_INDEX(var)]; + return ¶ms->intervals[var - SNDRV_PCM_HW_PARAM_FIRST_INTERVAL]; } #define params_access(p) snd_mask_min(hw_param_mask((p), SNDRV_PCM_HW_PARAM_ACCESS))