From 092a9f59bc05904d4555fa012db12e768734ba1a Mon Sep 17 00:00:00 2001
From: Florian Fainelli <f.fainelli@gmail.com>
Date: Thu, 30 Apr 2020 18:39:04 -0700
Subject: [PATCH 1/3] Revert "tty: serial: bcm63xx: fix missing clk_put() in
bcm63xx_uart"
This reverts commit 580d952e44de5509c69c8f9346180ecaa78ebeec ("tty:
serial: bcm63xx: fix missing clk_put() in bcm63xx_uart") because we
should not be doing a clk_put() if we were not successful in getting a
valid clock reference via clk_get() in the first place.
Fixes: 580d952e44de ("tty: serial: bcm63xx: fix missing clk_put() in bcm63xx_uart")
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Cc: stable <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20200501013904.1394-1-f.fainelli@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/tty/serial/bcm63xx_uart.c | 4 +---
1 file changed, 1 insertion(+), 3 deletions(-)
diff --git a/drivers/tty/serial/bcm63xx_uart.c b/drivers/tty/serial/bcm63xx_uart.c
index ed0aa5c0d9b7..5674da2b76f0 100644
--- a/drivers/tty/serial/bcm63xx_uart.c
+++ b/drivers/tty/serial/bcm63xx_uart.c
@@ -843,10 +843,8 @@ static int bcm_uart_probe(struct platform_device *pdev)
if (IS_ERR(clk) && pdev->dev.of_node)
clk = of_clk_get(pdev->dev.of_node, 0);
- if (IS_ERR(clk)) {
- clk_put(clk);
+ if (IS_ERR(clk))
return -ENODEV;
- }
port->iotype = UPIO_MEM;
port->irq = res_irq->start;
From 57d38f26d81e4275748b69372f31df545dcd9b71 Mon Sep 17 00:00:00 2001
From: Nicolas Pitre <nico@fluxnic.net>
Date: Sat, 2 May 2020 11:01:07 -0400
Subject: [PATCH 2/3] vt: fix unicode console freeing with a common interface
By directly using kfree() in different places we risk missing one if
it is switched to using vfree(), especially if the corresponding
vmalloc() is hidden away within a common abstraction.
Oh wait, that's exactly what happened here.
So let's fix this by creating a common abstraction for the free case
as well.
Signed-off-by: Nicolas Pitre <nico@fluxnic.net>
Reported-by: syzbot+0bfda3ade1ee9288a1be@syzkaller.appspotmail.com
Fixes: 9a98e7a80f95 ("vt: don't use kmalloc() for the unicode screen buffer")
Cc: <stable@vger.kernel.org>
Reviewed-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://lore.kernel.org/r/nycvar.YSQ.7.76.2005021043110.2671@knanqh.ubzr
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/tty/vt/vt.c | 9 +++++++--
1 file changed, 7 insertions(+), 2 deletions(-)
diff --git a/drivers/tty/vt/vt.c b/drivers/tty/vt/vt.c
index e5ffed795e4c..48a8199f7845 100644
--- a/drivers/tty/vt/vt.c
+++ b/drivers/tty/vt/vt.c
@@ -365,9 +365,14 @@ static struct uni_screen *vc_uniscr_alloc(unsigned int cols, unsigned int rows)
return uniscr;
}
+static void vc_uniscr_free(struct uni_screen *uniscr)
+{
+ vfree(uniscr);
+}
+
static void vc_uniscr_set(struct vc_data *vc, struct uni_screen *new_uniscr)
{
- vfree(vc->vc_uni_screen);
+ vc_uniscr_free(vc->vc_uni_screen);
vc->vc_uni_screen = new_uniscr;
}
@@ -1230,7 +1235,7 @@ static int vc_do_resize(struct tty_struct *tty, struct vc_data *vc,
err = resize_screen(vc, new_cols, new_rows, user);
if (err) {
kfree(newscreen);
- kfree(new_uniscr);
+ vc_uniscr_free(new_uniscr);
return err;
}
From 2ae11c46d5fdc46cb396e35911c713d271056d35 Mon Sep 17 00:00:00 2001
From: Shubhrajyoti Datta <shubhrajyoti.datta@xilinx.com>
Date: Mon, 4 May 2020 16:27:28 +0200
Subject: [PATCH 3/3] tty: xilinx_uartps: Fix missing id assignment to the
console
When serial console has been assigned to ttyPS1 (which is serial1 alias)
console index is not updated property and pointing to index -1 (statically
initialized) which ends up in situation where nothing has been printed on
the port.
The commit 18cc7ac8a28e ("Revert "serial: uartps: Register own uart console
and driver structures"") didn't contain this line which was removed by
accident.
Fixes: 18cc7ac8a28e ("Revert "serial: uartps: Register own uart console and driver structures"")
Signed-off-by: Shubhrajyoti Datta <shubhrajyoti.datta@xilinx.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Link: https://lore.kernel.org/r/ed3111533ef5bd342ee5ec504812240b870f0853.1588602446.git.michal.simek@xilinx.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/tty/serial/xilinx_uartps.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/tty/serial/xilinx_uartps.c b/drivers/tty/serial/xilinx_uartps.c
index ac137b6a1dc1..35e9e8faf8de 100644
--- a/drivers/tty/serial/xilinx_uartps.c
+++ b/drivers/tty/serial/xilinx_uartps.c
@@ -1459,6 +1459,7 @@ static int cdns_uart_probe(struct platform_device *pdev)
cdns_uart_uart_driver.nr = CDNS_UART_NR_PORTS;
#ifdef CONFIG_SERIAL_XILINX_PS_UART_CONSOLE
cdns_uart_uart_driver.cons = &cdns_uart_console;
+ cdns_uart_console.index = id;
#endif
rc = uart_register_driver(&cdns_uart_uart_driver);