From: Lizhi Hou Date: Fri, 7 Nov 2025 18:11:15 +0000 (-0800) Subject: accel/amdxdna: Clear mailbox interrupt register during channel creation X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=6ff9385c07aa311f01f87307e6256231be7d8675;p=thirdparty%2Fkernel%2Flinux.git accel/amdxdna: Clear mailbox interrupt register during channel creation 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 Signed-off-by: Lizhi Hou Link: https://patch.msgid.link/20251107181115.1293158-1-lizhi.hou@amd.com --- diff --git a/drivers/accel/amdxdna/amdxdna_mailbox.c b/drivers/accel/amdxdna/amdxdna_mailbox.c index 24258dcc18ebf..858df97cd3fbd 100644 --- a/drivers/accel/amdxdna/amdxdna_mailbox.c +++ b/drivers/accel/amdxdna/amdxdna_mailbox.c @@ -516,6 +516,7 @@ 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;