Dne 08. 09. 20 v 16:41 Pierre-Louis Bossart napsal(a):
On 9/8/20 9:35 AM, Mark Brown wrote:
On Tue, Sep 08, 2020 at 08:39:13AM -0500, Pierre-Louis Bossart wrote:
- __u8 bclk_master; /* SND_SOC_TPLG_BCLK_ value */
- __u8 bclk_provider; /* SND_SOC_TPLG_BCLK_ value */
Is it 100% compatible? Note that the uapi/* header is a copy from the kernel header, and it means that we'll change the same for the kernel, too.
It's absolutely 100% compatible by design. I was planning to update the kernel uapi header to align changes, but the volume of code is much lower on the alsa-lib side. Will resubmit with the preferred provider/consumer wording.
It's binary compatible but it'd break the build for any existing code using the UAPI headers.
Sorry, I don't fully get the comment. Aren't the uapi headers copied into each software tree that relies on them?
I think that only alsa-lib's topology library uses this header (and has own header copy), thus the breakage is minimal in this case.
Jaroslav