2023-12-11 17:11:54

by Luiz Augusto von Dentz

[permalink] [raw]
Subject: [PATCH BlueZ v1] shared/vcp: Fix notification endianness

From: Luiz Augusto von Dentz <[email protected]>

4db4d5fa1c4f ("shared/vcp: Fix endianness errors") does attempt to fix
the endianness of stored volume offset but in the process it broke the
notification since the value is no longer stored in the Bluetooth byte
order (Little Endian) but instead in the cpu byte order which is then
used in the notification as is, to fix this instead of notifying using
the stored value it now uses a dedicated variable which does use the
value from the request itself.
---
src/shared/vcp.c | 10 +++++++---
1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/src/shared/vcp.c b/src/shared/vcp.c
index 5d163266b480..e3451fa2a095 100644
--- a/src/shared/vcp.c
+++ b/src/shared/vcp.c
@@ -683,7 +683,7 @@ static uint8_t vocs_set_vol_offset(struct bt_vocs *vocs, struct bt_vcp *vcp,
struct iovec *iov)
{
struct bt_vcp_db *vdb;
- struct vol_offset_state *vstate;
+ struct vol_offset_state *vstate, state;
struct bt_vocs_set_vol_off *req;

DBG(vcp, "Set Volume Offset");
@@ -720,9 +720,13 @@ static uint8_t vocs_set_vol_offset(struct bt_vocs *vocs, struct bt_vcp *vcp,
/* Increment Change Counter */
vstate->counter = -~vstate->counter;

- gatt_db_attribute_notify(vdb->vocs->vos, (void *)vstate,
- sizeof(struct vol_offset_state),
+ /* Notify change */
+ state.vol_offset = req->set_vol_offset;
+ state.counter = vstate->counter;
+
+ gatt_db_attribute_notify(vdb->vocs->vos, (void *)&state, sizeof(state),
bt_vcp_get_att(vcp));
+
return 0;
}

--
2.43.0



2023-12-11 18:28:40

by bluez.test.bot

[permalink] [raw]
Subject: RE: [BlueZ,v1] shared/vcp: Fix notification endianness

This is automated email and please do not reply to this email!

Dear submitter,

Thank you for submitting the patches to the linux bluetooth mailing list.
This is a CI test results with your patch series:
PW Link:https://patchwork.kernel.org/project/bluetooth/list/?series=808878

---Test result---

Test Summary:
CheckPatch PASS 0.47 seconds
GitLint PASS 0.33 seconds
BuildEll PASS 23.84 seconds
BluezMake PASS 696.67 seconds
MakeCheck PASS 11.47 seconds
MakeDistcheck PASS 153.50 seconds
CheckValgrind PASS 215.13 seconds
CheckSmatch PASS 318.62 seconds
bluezmakeextell PASS 100.52 seconds
IncrementalBuild PASS 641.15 seconds
ScanBuild PASS 907.11 seconds



---
Regards,
Linux Bluetooth

2023-12-11 18:41:42

by patchwork-bot+bluetooth

[permalink] [raw]
Subject: Re: [PATCH BlueZ v1] shared/vcp: Fix notification endianness

Hello:

This patch was applied to bluetooth/bluez.git (master)
by Luiz Augusto von Dentz <[email protected]>:

On Mon, 11 Dec 2023 12:11:35 -0500 you wrote:
> From: Luiz Augusto von Dentz <[email protected]>
>
> 4db4d5fa1c4f ("shared/vcp: Fix endianness errors") does attempt to fix
> the endianness of stored volume offset but in the process it broke the
> notification since the value is no longer stored in the Bluetooth byte
> order (Little Endian) but instead in the cpu byte order which is then
> used in the notification as is, to fix this instead of notifying using
> the stored value it now uses a dedicated variable which does use the
> value from the request itself.
>
> [...]

Here is the summary with links:
- [BlueZ,v1] shared/vcp: Fix notification endianness
https://git.kernel.org/pub/scm/bluetooth/bluez.git/?id=95838efc07d3

You are awesome, thank you!
--
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