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| author | Lizhi Hou <lizhi.hou@amd.com> | 2025-11-07 10:11:15 -0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-12-18 14:02:59 +0100 |
| commit | 677b91705b351951bb50edee9cdd868757d39b09 (patch) | |
| tree | d2f352703e7f5351d221d80eba8a15c3a305edb6 /drivers/accel | |
| parent | 8e2121a40c39e26e8ba8cffbe30a00f607379b65 (diff) | |
| download | linux-677b91705b351951bb50edee9cdd868757d39b09.tar.gz linux-677b91705b351951bb50edee9cdd868757d39b09.tar.bz2 linux-677b91705b351951bb50edee9cdd868757d39b09.zip | |
accel/amdxdna: Clear mailbox interrupt register during channel creation
[ Upstream commit 6ff9385c07aa311f01f87307e6256231be7d8675 ]
The mailbox interrupt register is not always cleared when a mailbox channel
is created. This can leave stale interrupt states from previous operations.
Fix this by explicitly clearing the interrupt register in the mailbox
channel creation function.
Fixes: b87f920b9344 ("accel/amdxdna: Support hardware mailbox")
Reviewed-by: Maciej Falkowski <maciej.falkowski@linux.intel.com>
Signed-off-by: Lizhi Hou <lizhi.hou@amd.com>
Link: https://patch.msgid.link/20251107181115.1293158-1-lizhi.hou@amd.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers/accel')
| -rw-r--r-- | drivers/accel/amdxdna/amdxdna_mailbox.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/accel/amdxdna/amdxdna_mailbox.c b/drivers/accel/amdxdna/amdxdna_mailbox.c index da1ac89bb78f..6634a4d5717f 100644 --- a/drivers/accel/amdxdna/amdxdna_mailbox.c +++ b/drivers/accel/amdxdna/amdxdna_mailbox.c @@ -513,6 +513,7 @@ xdna_mailbox_create_channel(struct mailbox *mb, } mb_chann->bad_state = false; + mailbox_reg_write(mb_chann, mb_chann->iohub_int_addr, 0); MB_DBG(mb_chann, "Mailbox channel created (irq: %d)", mb_chann->msix_irq); return mb_chann; |