Messages in this thread Patch in this message | | | From | joe_zhuchg@126 ... | Subject | [PATCH 1/1] firmware: arm_scmi/mailbox: ignore notification for tx done using irq | Date | Sat, 9 May 2020 16:54:57 +0800 |
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From: Joe Zhu <Chunguang.Zhu@verisilicon.com>
If mailbox uses IRQ method, it already notified framework with mbox_chan_txdone() in ISR.
Signed-off-by: Joe Zhu <Chunguang.Zhu@verisilicon.com> --- drivers/firmware/arm_scmi/mailbox.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/firmware/arm_scmi/mailbox.c b/drivers/firmware/arm_scmi/mailbox.c index 73077bbc4ad9..303a5dc42429 100644 --- a/drivers/firmware/arm_scmi/mailbox.c +++ b/drivers/firmware/arm_scmi/mailbox.c @@ -9,6 +9,7 @@ #include <linux/err.h> #include <linux/device.h> #include <linux/mailbox_client.h> +#include <linux/mailbox_controller.h> #include <linux/of.h> #include <linux/of_address.h> #include <linux/slab.h> @@ -147,7 +148,8 @@ static void mailbox_mark_txdone(struct scmi_chan_info *cinfo, int ret) * Unfortunately, we have to kick the mailbox framework after we have * received our message. */ - mbox_client_txdone(smbox->chan, ret); + if (!smbox->chan->mbox->txdone_irq) + mbox_client_txdone(smbox->chan, ret); } static void mailbox_fetch_response(struct scmi_chan_info *cinfo, -- 2.17.1
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