commit e958203796650e3959a43708d67534bf36f4c83b
author b.liu <b.liu@mobiletek.cn> Thu Apr 17 19:18:16 2025 +0800
committer b.liu <b.liu@mobiletek.cn> Thu Apr 17 19:18:16 2025 +0800
tree b2d43b7c77053224287779c12b5e890cadc3d327
parent f51a5559b56d8fd47d9623531065443befb43e5b

ASR_BASE

Change-Id: Icf3719cc0afe3eeb3edc7fa80a2eb5199ca9dda1

target/linux/layerscape/patches-5.4/802-can-0017-can-flexcan-flexcan_mailbox_read-make-use-of-flexcan.patch

diff --git a/target/linux/layerscape/patches-5.4/802-can-0017-can-flexcan-flexcan_mailbox_read-make-use-of-flexcan.patch b/target/linux/layerscape/patches-5.4/802-can-0017-can-flexcan-flexcan_mailbox_read-make-use-of-flexcan.patch
new file mode 100644
index 0000000..b94992f
--- /dev/null
+++ b/target/linux/layerscape/patches-5.4/802-can-0017-can-flexcan-flexcan_mailbox_read-make-use-of-flexcan.patch
@@ -0,0 +1,37 @@
+From 6340760d0671e92b15ff92b7eda41bbdd9702437 Mon Sep 17 00:00:00 2001
+From: Marc Kleine-Budde <mkl@pengutronix.de>
+Date: Fri, 1 Mar 2019 16:27:59 +0100
+Subject: [PATCH] can: flexcan: flexcan_mailbox_read() make use of
+ flexcan_write64() to mark the mailbox as read
+
+In the previous patch the function flexcan_write64() was introduced.
+
+This patch replaces the open coded variant in flexcan_mailbox_read()
+that marks a mailbox as read, by a single call to flexcan_write64().
+
+Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
+---
+ drivers/net/can/flexcan.c | 11 +++--------
+ 1 file changed, 3 insertions(+), 8 deletions(-)
+
+--- a/drivers/net/can/flexcan.c
++++ b/drivers/net/can/flexcan.c
+@@ -891,15 +891,10 @@ static struct sk_buff *flexcan_mailbox_r
+ 	}
+ 
+  mark_as_read:
+-	if (priv->devtype_data->quirks & FLEXCAN_QUIRK_USE_OFF_TIMESTAMP) {
+-		/* Clear IRQ */
+-		if (n < 32)
+-			priv->write(BIT(n), &regs->iflag1);
+-		else
+-			priv->write(BIT(n - 32), &regs->iflag2);
+-	} else {
++	if (priv->devtype_data->quirks & FLEXCAN_QUIRK_USE_OFF_TIMESTAMP)
++		flexcan_write64(priv, FLEXCAN_IFLAG_MB(n), &regs->iflag1);
++	else
+ 		priv->write(FLEXCAN_IFLAG_RX_FIFO_AVAILABLE, &regs->iflag1);
+-	}
+ 
+ 	/* Read the Free Running Timer. It is optional but recommended
+ 	 * to unlock Mailbox as soon as possible and make it available