[PATCH v2 3/7] mailbox: mpfs: ditch a useless busy check

From: Conor Dooley
Date: Fri Jan 20 2023 - 09:40:17 EST


mpfs_mbox_rx_data() already checks if the system controller is busy
before attempting to do anything, so drop the second check before
reading any data.

No functional change intended.

Signed-off-by: Conor Dooley <conor.dooley@xxxxxxxxxxxxx>
---
drivers/mailbox/mailbox-mpfs.c | 10 ++++------
1 file changed, 4 insertions(+), 6 deletions(-)

diff --git a/drivers/mailbox/mailbox-mpfs.c b/drivers/mailbox/mailbox-mpfs.c
index e0e825bdbad9..0d176aba3462 100644
--- a/drivers/mailbox/mailbox-mpfs.c
+++ b/drivers/mailbox/mailbox-mpfs.c
@@ -170,12 +170,10 @@ static void mpfs_mbox_rx_data(struct mbox_chan *chan)
if (response->resp_status)
return;

- if (!mpfs_mbox_busy(mbox)) {
- for (i = 0; i < num_words; i++) {
- response->resp_msg[i] =
- readl_relaxed(mbox->mbox_base
- + mbox->resp_offset + i * 0x4);
- }
+ for (i = 0; i < num_words; i++) {
+ response->resp_msg[i] =
+ readl_relaxed(mbox->mbox_base
+ + mbox->resp_offset + i * 0x4);
}

mbox_chan_received_data(chan, response);
--
2.39.0