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i3c: master: amd: Report direct CCC read length in payload.actual_len

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The I3C core expects master drivers to leave payload.len unchanged and
report the number of bytes received on GET CCCs via payload.actual_len.
The AMD driver was overwriting payload.len after direct read CCCs.

Set payload.actual_len from the directed command's rx_actual in
xi3c_master_send_direct_ccc_cmd() instead of modifying payload.len.

Fixes:629a6ddd1d9a ("i3c: master: Add driver for AMD AXI
I3C master controller")

Signed-off-by: Shubham Patil <shubhamsanjay.patil@amd.com>
Reviewed-by: Frank Li <Frank.Li@nxp.com>
Link: https://patch.msgid.link/20260908111207.3274407-1-shubhamsanjay.patil@amd.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
This commit is contained in:
Shubham Patil 2026-09-08 16:42:07 +05:30 committed by Alexandre Belloni
parent 9b347cbde8
commit bf9ec06c90
1 changed files with 2 additions and 2 deletions
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4
drivers/i3c/master/amd-i3c-master.c
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@ -806,8 +806,8 @@ static int xi3c_master_send_direct_ccc_cmd(struct xi3c_master *master,
/* Report actual byte count so the core sees the right length on short reads */
if (!ret && ccc->rnw)
ccc->dests[0].payload.len = min(xfer->cmds[1].rx_actual,
ccc->dests[0].payload.len);
ccc->dests[0].payload.actual_len = min(xfer->cmds[1].rx_actual,
ccc->dests[0].payload.len);
return ret;
}