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2017-04-27mailbox: skip complete wait event if timer expiredSudeep Holla1-3/+3
If a wait_for_completion_timeout() call returns due to a timeout, complete() can get called after returning from the wait which is incorrect and can cause subsequent transmissions on a channel to fail. Since the wait_for_completion_timeout() sees the completion variable is non-zero caused by the erroneous/spurious complete() call, and it immediately returns without waiting for the time as expected by the client. This patch fixes the issue by skipping complete() call for the timer expiry. Fixes: 2b6d83e2b8b7 ("mailbox: Introduce framework for mailbox") Reported-by: Alexey Klimov <alexey.klimov@arm.com> Signed-off-by: Sudeep Holla <sudeep.holla@arm.com> Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
2017-04-27mailbox: always wait in mbox_send_message for blocking Tx modeSudeep Holla1-1/+1
There exists a race when msg_submit return immediately as there was an active request being processed which may have completed just before it's checked again in mbox_send_message. This will result in return to the caller without waiting in mbox_send_message even when it's blocking Tx. This patch fixes the issue by waiting for the completion always if Tx is in blocking mode. Fixes: 2b6d83e2b8b7 ("mailbox: Introduce framework for mailbox") Reported-by: Alexey Klimov <alexey.klimov@arm.com> Signed-off-by: Sudeep Holla <sudeep.holla@arm.com> Reviewed-by: Alexey Klimov <alexey.klimov@arm.com> Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
2017-03-29mailbox: Remove depends on COMPILE_TEST for BCM_FLEXRM_MBOXAnup Patel1-1/+1
The Broadcom FlexRM mailbox driver uses platform MSI support but not all ARCHs provide asm/msi.h. Due to this, we get compilation error in Broadcom FlexRM mailbox driver via linux/msi.h on ARCHs which lack asm/msi.h. This patch removes "depends on COMPILE_TEST" for Kconfig option BCM_FLEXRM_MBOX so that Broadcom FlexRM mailbox driver is only compiled for ARM64. Signed-off-by: Anup Patel <anup.patel@broadcom.com> Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
2017-03-28mailbox: check ->last_tx_done for NULL in case of timer-based pollingAlexey Klimov1-0/+6
It is allowed by code to register mailbox controller that sets txdone_poll flag to request timer-based polling with missed ->last_tx_done() method. If such thing happens and since presence of last_tx_done() is not checked it will fail in hrtimer callback function txdone_hrtimer() when first message will be transmitted. This patch adds check for this method and logging of error on registration of mailbox controller if it requested timer-based polling. Signed-off-by: Alexey Klimov <alexey.klimov@arm.com> Acked-by: Sudeep Holla <sudeep.holla@arm.com> Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>