diff options
| author | Quan Nguyen <quan@os.amperecomputing.com> | 2025-01-07 10:47:34 +0700 |
|---|---|---|
| committer | Corey Minyard <corey@minyard.net> | 2025-01-07 09:14:26 -0600 |
| commit | 83d8c79aa958e37724ed9c14dc7d0f66a48ad864 (patch) | |
| tree | 5d08e6ecedca820e3bbb0604dc741e444cd25469 | |
| parent | 9b6442a3bdd7e0d528122d63c24bd57f6cb05671 (diff) | |
ipmi: ssif_bmc: Fix new request loss when bmc ready for a response
Cosmo found that when there is a new request comes in while BMC is
ready for a response, the complete_response(), which is called to
complete the pending response, would accidentally clear out that new
request and force ssif_bmc to move back to abort state again.
This commit is to address that issue.
Fixes: dd2bc5cc9e25 ("ipmi: ssif_bmc: Add SSIF BMC driver")
Reported-by: Cosmo Chou <chou.cosmo@gmail.com>
Closes: https://lore.kernel.org/lkml/20250101165431.2113407-1-chou.cosmo@gmail.com/
Signed-off-by: Quan Nguyen <quan@os.amperecomputing.com>
Message-ID: <20250107034734.1842247-1-quan@os.amperecomputing.com>
Signed-off-by: Corey Minyard <corey@minyard.net>
| -rw-r--r-- | drivers/char/ipmi/ssif_bmc.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/char/ipmi/ssif_bmc.c b/drivers/char/ipmi/ssif_bmc.c index a14fafc583d4..310f17dd9511 100644 --- a/drivers/char/ipmi/ssif_bmc.c +++ b/drivers/char/ipmi/ssif_bmc.c @@ -292,7 +292,6 @@ static void complete_response(struct ssif_bmc_ctx *ssif_bmc) ssif_bmc->nbytes_processed = 0; ssif_bmc->remain_len = 0; ssif_bmc->busy = false; - memset(&ssif_bmc->part_buf, 0, sizeof(struct ssif_part_buffer)); wake_up_all(&ssif_bmc->wait_queue); } @@ -744,9 +743,11 @@ static void on_stop_event(struct ssif_bmc_ctx *ssif_bmc, u8 *val) ssif_bmc->aborting = true; } } else if (ssif_bmc->state == SSIF_RES_SENDING) { - if (ssif_bmc->is_singlepart_read || ssif_bmc->block_num == 0xFF) + if (ssif_bmc->is_singlepart_read || ssif_bmc->block_num == 0xFF) { + memset(&ssif_bmc->part_buf, 0, sizeof(struct ssif_part_buffer)); /* Invalidate response buffer to denote it is sent */ complete_response(ssif_bmc); + } ssif_bmc->state = SSIF_READY; } |