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| author | Arnd Bergmann <arnd@arndb.de> | 2025-04-29 18:14:19 +0200 |
|---|---|---|
| committer | Arnd Bergmann <arnd@arndb.de> | 2025-04-29 18:14:19 +0200 |
| commit | fbefe1c45dca0efde74baa8718c74e8900678d33 (patch) | |
| tree | f7df21f440476270828928b4cd6bac86167326dc | |
| parent | 94ddc14095480b1de946c56169bc0d42a815565a (diff) | |
| parent | 4567bdaaaaa1744da3d7da07d9aca2f941f5b4e5 (diff) | |
Merge tag 'ffa-fix-6.15' of https://git.kernel.org/pub/scm/linux/kernel/git/sudeep.holla/linux into arm/fixes
Arm FF-A fix for v6.15
A fix that addresses incorrect release of Rx buffer ownership in the
driver. The fix specificially avoids releasing Rx buffer ownership with
FFA_RX_RELEASE if it wasn’t acquired during a FFA_PARTITION_INFO_GET call
that only requested the partition count. This prevents unnecessary errors
like FFA_RET_DENIED from firmware when buffers are not actually owned by
the driver.
* tag 'ffa-fix-6.15' of https://git.kernel.org/pub/scm/linux/kernel/git/sudeep.holla/linux:
firmware: arm_ffa: Skip Rx buffer ownership release if not acquired
| -rw-r--r-- | drivers/firmware/arm_ffa/driver.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/firmware/arm_ffa/driver.c b/drivers/firmware/arm_ffa/driver.c index 19295282de24..fe55613a8ea9 100644 --- a/drivers/firmware/arm_ffa/driver.c +++ b/drivers/firmware/arm_ffa/driver.c @@ -299,7 +299,8 @@ __ffa_partition_info_get(u32 uuid0, u32 uuid1, u32 uuid2, u32 uuid3, import_uuid(&buf->uuid, (u8 *)&rx_buf->uuid); } - ffa_rx_release(); + if (!(flags & PARTITION_INFO_GET_RETURN_COUNT_ONLY)) + ffa_rx_release(); mutex_unlock(&drv_info->rx_lock); |