commit 92d4c21e51fc12736c39c2a161a42f20e2be8a00
author Olivier Deprez <olivier.deprez@arm.com> Tue Dec 06 15:05:30 2022 +0100
committer Olivier Deprez <olivier.deprez@arm.com> Tue Dec 06 15:05:30 2022 +0100
tree 0ea63b023a85dff7aeb0895b46d3b22a65669ae1
parent 157378f43faad830e4aa3815bde5fa9f9a9f5be6

Update Linux to v5.10.157

Sourced from [1]

[1] https://cdn.kernel.org/pub/linux/kernel/v5.x/linux-5.10.157.tar.xz

Signed-off-by: Olivier Deprez <olivier.deprez@arm.com>
Change-Id: I7b30d9e98d8c465d6b44de8e7433b4a40b3289ba

drivers/tty/mxser.c

diff --git a/drivers/tty/mxser.c b/drivers/tty/mxser.c
index 3703987..8344265 100644
--- a/drivers/tty/mxser.c
+++ b/drivers/tty/mxser.c
@@ -858,6 +858,7 @@
 	struct mxser_port *info = container_of(port, struct mxser_port, port);
 	unsigned long page;
 	unsigned long flags;
+	int ret;
 
 	page = __get_free_page(GFP_KERNEL);
 	if (!page)
@@ -867,9 +868,9 @@
 
 	if (!info->ioaddr || !info->type) {
 		set_bit(TTY_IO_ERROR, &tty->flags);
-		free_page(page);
 		spin_unlock_irqrestore(&info->slock, flags);
-		return 0;
+		ret = 0;
+		goto err_free_xmit;
 	}
 	info->port.xmit_buf = (unsigned char *) page;
 
@@ -895,8 +896,10 @@
 		if (capable(CAP_SYS_ADMIN)) {
 			set_bit(TTY_IO_ERROR, &tty->flags);
 			return 0;
-		} else
-			return -ENODEV;
+		}
+
+		ret = -ENODEV;
+		goto err_free_xmit;
 	}
 
 	/*
@@ -941,6 +944,10 @@
 	spin_unlock_irqrestore(&info->slock, flags);
 
 	return 0;
+err_free_xmit:
+	free_page(page);
+	info->port.xmit_buf = NULL;
+	return ret;
 }
 
 /*