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| author | Cristian Marussi <cristian.marussi@arm.com> | 2024-03-25 20:46:18 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-05-22 14:12:13 +0200 |
| commit | 844b899f78999f6cab83a9ff09cb16b985df64a5 (patch) | |
| tree | 0f57c36a2e22fcefba849ad7a4df5a0786fc4271 /drivers/firmware | |
| parent | 6bddbdbeb748cb437f798ac12b30d915f861a35a (diff) | |
| download | linux-844b899f78999f6cab83a9ff09cb16b985df64a5.tar.gz linux-844b899f78999f6cab83a9ff09cb16b985df64a5.tar.bz2 linux-844b899f78999f6cab83a9ff09cb16b985df64a5.zip | |
firmware: arm_scmi: Add message dump traces for bad and unexpected replies
[ Upstream commit 5076ab66db1671a5cd9ecfb857d1949e36a33142 ]
It is useful to have message dump traces for any invalid/bad/unexpected
replies. Let us add traces for the same as well as late-timed-out,
out-of-order and unexpected/spurious messages.
Signed-off-by: Cristian Marussi <cristian.marussi@arm.com>
Link: https://lore.kernel.org/r/20240325204620.1437237-4-cristian.marussi@arm.com
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
Stable-dep-of: c23c03bf1faa ("firmware: arm_scmi: Fix timeout checks on polling path")
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers/firmware')
| -rw-r--r-- | drivers/firmware/arm_scmi/driver.c | 10 | ||||
| -rw-r--r-- | drivers/firmware/arm_scmi/mailbox.c | 3 |
2 files changed, 13 insertions, 0 deletions
diff --git a/drivers/firmware/arm_scmi/driver.c b/drivers/firmware/arm_scmi/driver.c index b3c2a199b2af..f66a16d3671f 100644 --- a/drivers/firmware/arm_scmi/driver.c +++ b/drivers/firmware/arm_scmi/driver.c @@ -852,6 +852,9 @@ scmi_xfer_command_acquire(struct scmi_chan_info *cinfo, u32 msg_hdr) "Message for %d type %d is not expected!\n", xfer_id, msg_type); spin_unlock_irqrestore(&minfo->xfer_lock, flags); + + scmi_bad_message_trace(cinfo, msg_hdr, MSG_UNEXPECTED); + return xfer; } refcount_inc(&xfer->users); @@ -876,6 +879,9 @@ scmi_xfer_command_acquire(struct scmi_chan_info *cinfo, u32 msg_hdr) dev_err(cinfo->dev, "Invalid message type:%d for %d - HDR:0x%X state:%d\n", msg_type, xfer_id, msg_hdr, xfer->state); + + scmi_bad_message_trace(cinfo, msg_hdr, MSG_INVALID); + /* On error the refcount incremented above has to be dropped */ __scmi_xfer_put(minfo, xfer); xfer = ERR_PTR(-EINVAL); @@ -917,6 +923,9 @@ static void scmi_handle_notification(struct scmi_chan_info *cinfo, if (IS_ERR(xfer)) { dev_err(dev, "failed to get free message slot (%ld)\n", PTR_ERR(xfer)); + + scmi_bad_message_trace(cinfo, msg_hdr, MSG_NOMEM); + scmi_clear_channel(info, cinfo); return; } @@ -1036,6 +1045,7 @@ void scmi_rx_callback(struct scmi_chan_info *cinfo, u32 msg_hdr, void *priv) break; default: WARN_ONCE(1, "received unknown msg_type:%d\n", msg_type); + scmi_bad_message_trace(cinfo, msg_hdr, MSG_UNKNOWN); break; } } diff --git a/drivers/firmware/arm_scmi/mailbox.c b/drivers/firmware/arm_scmi/mailbox.c index 8e513f70b75d..f1d5e3fba35e 100644 --- a/drivers/firmware/arm_scmi/mailbox.c +++ b/drivers/firmware/arm_scmi/mailbox.c @@ -58,6 +58,9 @@ static void rx_callback(struct mbox_client *cl, void *m) */ if (cl->knows_txdone && !shmem_channel_free(smbox->shmem)) { dev_warn(smbox->cinfo->dev, "Ignoring spurious A2P IRQ !\n"); + scmi_bad_message_trace(smbox->cinfo, + shmem_read_header(smbox->shmem), + MSG_MBOX_SPURIOUS); return; } |