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| author | Stanley Chu <[email protected]> | 2025-07-30 00:37:19 +0000 |
|---|---|---|
| committer | Alexandre Belloni <[email protected]> | 2025-07-30 23:36:16 +0000 |
| commit | bc4a09d8e79cadccdd505f47b01903a80bc666e7 (patch) | |
| tree | ecfce86343e82eea1f665b51e44ff89a5e68bc76 /lib/crypto/mpi/mpi-cmp.c | |
| parent | i3c: master: Add basic driver for the Renesas I3C controller (diff) | |
| download | kernel-bc4a09d8e79cadccdd505f47b01903a80bc666e7.tar.gz kernel-bc4a09d8e79cadccdd505f47b01903a80bc666e7.zip | |
i3c: master: svc: Fix npcm845 FIFO_EMPTY quirk
In a private write transfer, the driver pre-fills the FIFO to work around
the FIFO_EMPTY quirk. However, if an IBIWON event occurs, the hardware
emits a NACK and the driver initiates a retry. During the retry, driver
attempts to pre-fill the FIFO again if there is remaining data, but since
the FIFO is already full, this leads to data loss.
Check available space in FIFO to prevent overflow.
Fixes: 4008a74e0f9b ("i3c: master: svc: Fix npcm845 FIFO empty issue")
Signed-off-by: Stanley Chu <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Alexandre Belloni <[email protected]>
Diffstat (limited to 'lib/crypto/mpi/mpi-cmp.c')
0 files changed, 0 insertions, 0 deletions