Messages in this thread | | | Date | Fri, 20 Oct 2023 15:49:36 +0200 | From | Miquel Raynal <> | Subject | Re: [PATCH v3 3/6] i3c: master: svc: fix ibi may not return mandatory data byte |
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Hi Frank,
Frank.Li@nxp.com wrote on Thu, 19 Oct 2023 18:27:22 -0400:
> MSTATUS[RXPEND] is only updated after the data transfer cycle started. This > creates an issue when the I3C clock is slow, and the CPU is running fast > enough that MSTATUS[RXPEND] may not be updated when the code reaches > checking point. As a result, mandatory data can be missed. > > Add a wait for MSTATUS[COMPLETE] to ensure that all mandatory data is > already in FIFO. It also works without mandatory data. > > Fixes: dd3c52846d59 ("i3c: master: svc: Add Silvaco I3C master driver") > Cc: stable@vger.kernel.org > Signed-off-by: Frank Li <Frank.Li@nxp.com>
Reviewed-by: Miquel Raynal <miquel.raynal@bootlin.com>
Thanks, Miquèl
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