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libbpf-y := libbpf.o bpf.o
'/cgit.cgi/linux/net-next.git/commit/?id=6809cd682b82dfff47943850d1a8c714f971b5ca'>6809cd682b82dfff47943850d1a8c714f971b5ca (patch) tree343beda600798c0c06e10e49e3f8402a42a72413 parent027a9fe6835620422b6713892175716f3613dd9d (diff)
ALSA: info: Return error for invalid read/write
Currently the ALSA proc handler allows read or write even if the proc file were write-only or read-only. It's mostly harmless, does thing but allocating memory and ignores the input/output. But it doesn't tell user about the invalid use, and it's confusing and inconsistent in comparison with other proc files. This patch adds some sanity checks and let the proc handler returning an -EIO error when the invalid read/write is performed. Cc: <stable@vger.kernel.org> # v4.2+ Signed-off-by: Takashi Iwai <tiwai@suse.de>
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