Kernel/linux-stable
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git synced 2024-12-29 17:25:38 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

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

Browse Source 
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
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
drivers/i3c/master/mipi-i3c-hci/dma.c
View File

@ -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;