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i3c: mipi-i3c-hci: Error out instead on BUG_ON() in IBI DMA setup

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Definitely condition dma_get_cache_alignment * defined value > 256
during driver initialization is not reason to BUG_ON(). Turn that to
graceful error out with -EINVAL.

Signed-off-by: Jarkko Nikula <jarkko.nikula@linux.intel.com>
Link: https://lore.kernel.org/r/20240628131559.502822-3-jarkko.nikula@linux.intel.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
This commit is contained in:
Jarkko Nikula 2024-06-28 16:15:58 +03:00 committed by Alexandre Belloni
parent 2df1de813a
commit 8a2be2f1db
1 changed files with 4 additions and 1 deletions
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drivers/i3c/master/mipi-i3c-hci/dma.c
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@ -279,7 +279,10 @@ static int hci_dma_init(struct i3c_hci *hci)
rh->ibi_chunk_sz = dma_get_cache_alignment();
rh->ibi_chunk_sz *= IBI_CHUNK_CACHELINES;
BUG_ON(rh->ibi_chunk_sz > 256);
if (rh->ibi_chunk_sz > 256) {
ret = -EINVAL;
goto err_out;
}
ibi_status_ring_sz = rh->ibi_status_sz * rh->ibi_status_entries;
ibi_data_ring_sz = rh->ibi_chunk_sz * rh->ibi_chunks_total;