From: Takashi Sakamoto <o-takashi@sakamocchi.jp>
To: linux1394-devel@lists.sourceforge.net
Cc: stable@vger.kernel.org
Subject: [PATCH] firewire: ohci: fulfill timestamp for some local asynchronous transaction
Date: Mon, 29 Apr 2024 17:47:08 +0900 [thread overview]
Message-ID: <20240429084709.707473-1-o-takashi@sakamocchi.jp> (raw)
1394 OHCI driver generates packet data for the response subaction to the
request subaction to some local registers. In the case, the driver should
assign timestamp to them by itself.
This commit fulfills the timestamp for the subaction.
Cc: stable@vger.kernel.org
Fixes: dcadfd7f7c74 ("firewire: core: use union for callback of transaction completion")
Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
---
drivers/firewire/ohci.c | 8 ++++++--
1 file changed, 6 insertions(+), 2 deletions(-)
diff --git a/drivers/firewire/ohci.c b/drivers/firewire/ohci.c
index 38d19410a2be..b9ae0340b8a7 100644
--- a/drivers/firewire/ohci.c
+++ b/drivers/firewire/ohci.c
@@ -1556,6 +1556,8 @@ static int handle_at_packet(struct context *context,
#define HEADER_GET_DATA_LENGTH(q) (((q) >> 16) & 0xffff)
#define HEADER_GET_EXTENDED_TCODE(q) (((q) >> 0) & 0xffff)
+static u32 get_cycle_time(struct fw_ohci *ohci);
+
static void handle_local_rom(struct fw_ohci *ohci,
struct fw_packet *packet, u32 csr)
{
@@ -1580,6 +1582,8 @@ static void handle_local_rom(struct fw_ohci *ohci,
(void *) ohci->config_rom + i, length);
}
+ // Timestamping on behalf of the hardware.
+ response.timestamp = cycle_time_to_ohci_tstamp(get_cycle_time(ohci));
fw_core_handle_response(&ohci->card, &response);
}
@@ -1628,6 +1632,8 @@ static void handle_local_lock(struct fw_ohci *ohci,
fw_fill_response(&response, packet->header, RCODE_BUSY, NULL, 0);
out:
+ // Timestamping on behalf of the hardware.
+ response.timestamp = cycle_time_to_ohci_tstamp(get_cycle_time(ohci));
fw_core_handle_response(&ohci->card, &response);
}
@@ -1670,8 +1676,6 @@ static void handle_local_request(struct context *ctx, struct fw_packet *packet)
}
}
-static u32 get_cycle_time(struct fw_ohci *ohci);
-
static void at_context_transmit(struct context *ctx, struct fw_packet *packet)
{
unsigned long flags;
--
2.43.0
next reply other threads:[~2024-04-29 8:47 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-04-29 8:47 Takashi Sakamoto [this message]
2024-04-29 22:59 ` [PATCH] firewire: ohci: fulfill timestamp for some local asynchronous transaction Takashi Sakamoto
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20240429084709.707473-1-o-takashi@sakamocchi.jp \
--to=o-takashi@sakamocchi.jp \
--cc=linux1394-devel@lists.sourceforge.net \
--cc=stable@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.