docs: sound: writing-an-alsa-driver.rst: get rid of :c:type
the :c:type shouldn't be used with structs with Sphinx 3, as the C domain there uses .. c:struct for structs. As we have the automarkup extension, let's just get rid of all :c:type as a whole, as those will be automagically marked as such. This solves a bunch of warnings with Sphinx 3, like those: .../Documentation/sound/kernel-api/writing-an-alsa-driver.rst:490: WARNING: Unparseable C cross-reference: 'calling snd_card_free' Invalid C declaration: Expected end of definition. [error at 8] calling snd_card_free --------^ .../Documentation/sound/kernel-api/writing-an-alsa-driver.rst:3328: WARNING: Unparseable C cross-reference: 'snd_rawmidi_transmit*' Invalid C declaration: Expected end of definition. [error at 20] snd_rawmidi_transmit* --------------------^ .../Documentation/sound/kernel-api/writing-an-alsa-driver.rst:3928: WARNING: Unparseable C cross-reference: 'copy_from/to_user' Invalid C declaration: Expected end of definition. [error at 9] copy_from/to_user ---------^ Reviewed-by:Takashi Iwai <tiwai@suse.de> Signed-off-by:
Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
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