mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-27 01:11:14 +00:00
e5aa498acb
Fixes CVE-2020-10757 via upstream commit df4988aa1c96 ("mm: Fix mremap
not considering huge pmd devmap").
Resolved merge conflict in the following patches:
bcm27xx: 950-0128-gpiolib-Don-t-prevent-IRQ-usage-of-output-GPIOs.patch
Refreshed patches, removed upstreamed patch:
generic: 751-v5.8-net-dsa-mt7530-set-CPU-port-to-fallback-mode.patch
generic: 754-v5.7-net-dsa-mt7530-fix-roaming-from-DSA-user-ports.patch
Run tested: qemu-x86-64
Build tested: x86/64, imx6, sunxi/a53
Signed-off-by: Petr Štetiar <ynezz@true.cz>
51 lines
1.7 KiB
Diff
51 lines
1.7 KiB
Diff
From 122b21149cada59805040895f3d679ceb0e00063 Mon Sep 17 00:00:00 2001
|
|
From: Phil Elwell <phil@raspberrypi.org>
|
|
Date: Tue, 24 Apr 2018 14:42:27 +0100
|
|
Subject: [PATCH] gpiolib: Don't prevent IRQ usage of output GPIOs
|
|
|
|
Upstream Linux deems using output GPIOs to generate IRQs as a bogus
|
|
use case, even though the BCM2835 GPIO controller is capable of doing
|
|
so. A number of users would like to make use of this facility, so
|
|
disable the checks.
|
|
|
|
See: https://github.com/raspberrypi/linux/issues/2527
|
|
|
|
Signed-off-by: Phil Elwell <phil@raspberrypi.org>
|
|
---
|
|
drivers/gpio/gpiolib.c | 8 +++++---
|
|
1 file changed, 5 insertions(+), 3 deletions(-)
|
|
|
|
--- a/drivers/gpio/gpiolib.c
|
|
+++ b/drivers/gpio/gpiolib.c
|
|
@@ -55,6 +55,8 @@
|
|
#define extra_checks 0
|
|
#endif
|
|
|
|
+#define dont_test_bit(b,d) (0)
|
|
+
|
|
/* Device and char device-related information */
|
|
static DEFINE_IDA(gpio_ida);
|
|
static dev_t gpio_devt;
|
|
@@ -3091,8 +3093,8 @@ int gpiod_direction_output(struct gpio_d
|
|
value = !!value;
|
|
|
|
/* GPIOs used for enabled IRQs shall not be set as output */
|
|
- if (test_bit(FLAG_USED_AS_IRQ, &desc->flags) &&
|
|
- test_bit(FLAG_IRQ_IS_ENABLED, &desc->flags)) {
|
|
+ if (dont_test_bit(FLAG_USED_AS_IRQ, &desc->flags) &&
|
|
+ dont_test_bit(FLAG_IRQ_IS_ENABLED, &desc->flags)) {
|
|
gpiod_err(desc,
|
|
"%s: tried to set a GPIO tied to an IRQ as output\n",
|
|
__func__);
|
|
@@ -3895,8 +3897,8 @@ int gpiochip_lock_as_irq(struct gpio_chi
|
|
}
|
|
|
|
/* To be valid for IRQ the line needs to be input or open drain */
|
|
- if (test_bit(FLAG_IS_OUT, &desc->flags) &&
|
|
- !test_bit(FLAG_OPEN_DRAIN, &desc->flags)) {
|
|
+ if (dont_test_bit(FLAG_IS_OUT, &desc->flags) &&
|
|
+ !dont_test_bit(FLAG_OPEN_DRAIN, &desc->flags)) {
|
|
chip_err(chip,
|
|
"%s: tried to flag a GPIO set as output for IRQ\n",
|
|
__func__);
|