Merge tag 'mailbox-v7.2' of git://git.kernel.org/pub/scm/linux/kernel/git/jassibrar/mailbox

Pull mailbox updates from Jassi Brar:
 "Core:
   - add debugfs support for used channels
   - fix resource leak on startup failure
   - propagate tx error codes
   - clarify blocking mode thread support

  Drivers:
   - exynos: remove unused register definitions
   - imx: refactor IRQ handlers, migrate to devm helpers, and other
     minor improvements
   - mpfs: fix syscon presence check in inbox ISR
   - mtk-adsp: fix use-after-free during device teardown
   - qcom: add dt-bindings for QCOM Maili, Hawi, Shikra APCS, and Nord
     CPUCP platform support"

* tag 'mailbox-v7.2' of git://git.kernel.org/pub/scm/linux/kernel/git/jassibrar/mailbox: (23 commits)
  mailbox: imx: Don't force-thread the primary handler
  mailbox: imx: Move the RXDB part of the mailbox into the threaded handler
  mailbox: imx: Move the RX part of the mailbox into the threaded handler
  mailbox: imx: Start splitting the IRQ handler in primary and threaded handler
  mailbox: imx: Use channel index instead of zero in imx_mu_specific_rx()
  mailbox: imx: use devm_of_platform_populate()
  mailbox: imx: Use devm_pm_runtime_enable()
  mailbox: imx: Add a channel shutdown field
  mailbox: imx: Forward the timeout/ error in imx_mu_generic_tx()
  dt-bindings: mailbox: qcom: Add IPCC support for Maili Platform
  mailbox: add list of used channels to debugfs
  mailbox: don't free the channel if the startup callback failed
  mailbox: Make mbox_send_message() return error code when tx fails
  mailbox: Clarify multi-thread is not supported in blocking mode
  mailbox: mtk-adsp: fix UAF during device teardown
  mailbox: qcom: Unify user-visible "Qualcomm" name
  mailbox: exynos: Drop unused register definitions
  dt-bindings: mailbox: qcom: Add IPCC support for Hawi Platform
  dt-bindings: mailbox: qcom,cpucp-mbox: Add Hawi compatible
  dt-bindings: mailbox: qcom: Add Shikra APCS compatible
  ...

1 files changed, 2 insertions, 0 deletions

diff --git a/include/linux/mailbox_controller.h b/include/linux/mailbox_controller.h
index dc93287a2a01..26a238a6f941 100644
--- a/include/linux/mailbox_controller.h
+++ b/include/linux/mailbox_controller.h
@@ -120,6 +120,7 @@ struct mbox_controller {
  * @txdone_method:	Way to detect TXDone chosen by the API
  * @cl:			Pointer to the current owner of this channel
  * @tx_complete:	Transmission completion
+ * @tx_status:		Transmission status
  * @active_req:		Currently active request hook
  * @msg_count:		No. of mssg currently queued
  * @msg_free:		Index of next available mssg slot
@@ -132,6 +133,7 @@ struct mbox_chan {
 	unsigned txdone_method;
 	struct mbox_client *cl;
 	struct completion tx_complete;
+	int tx_status;
 	void *active_req;
 	unsigned msg_count, msg_free;
 	void *msg_data[MBOX_TX_QUEUE_LEN];