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amixer: fix display of unreadable control elements

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When an element is marked as not readble, do not try to read it and then
complain about the error, but just ignore it.

Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
This commit is contained in:
Clemens Ladisch 2010-02-01 13:22:39 +01:00
parent 0034b1f83f
commit cdc496addb
1 changed files with 3 additions and 0 deletions
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3
amixer/amixer.c
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@ -602,6 +602,8 @@ static int show_control(const char *space, snd_hctl_elem_t *elem,
break;
}
if (level & LEVEL_BASIC) {
if (!snd_ctl_elem_info_is_readable(info))
goto __skip_read;
if ((err = snd_hctl_elem_read(elem, control)) < 0) {
error("Control %s element read error: %s\n", card, snd_strerror(err));
return err;
@ -638,6 +640,7 @@ static int show_control(const char *space, snd_hctl_elem_t *elem,
}
}
printf("\n");
__skip_read:
if (!snd_ctl_elem_info_is_tlv_readable(info))
goto __skip_tlv;
tlv = malloc(4096);