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-rw-r--r--target/linux/brcm2708/patches-4.19/950-0307-Revert-pwm-Set-class-for-exported-channels-in-sysfs.patch63
1 files changed, 0 insertions, 63 deletions
diff --git a/target/linux/brcm2708/patches-4.19/950-0307-Revert-pwm-Set-class-for-exported-channels-in-sysfs.patch b/target/linux/brcm2708/patches-4.19/950-0307-Revert-pwm-Set-class-for-exported-channels-in-sysfs.patch
deleted file mode 100644
index 06fc3187a5..0000000000
--- a/target/linux/brcm2708/patches-4.19/950-0307-Revert-pwm-Set-class-for-exported-channels-in-sysfs.patch
+++ /dev/null
@@ -1,63 +0,0 @@
-From 50edca9454fa2c35a2c3537a024a587addb4e823 Mon Sep 17 00:00:00 2001
-From: Fabrice Gasnier <fabrice.gasnier@st.com>
-Date: Mon, 1 Oct 2018 15:23:56 +0200
-Subject: [PATCH 307/773] Revert "pwm: Set class for exported channels in
- sysfs"
-MIME-Version: 1.0
-Content-Type: text/plain; charset=UTF-8
-Content-Transfer-Encoding: 8bit
-
-commit c289d6625237aa785b484b4e94c23b3b91ea7e60 upstream.
-
-This reverts commit 7e5d1fd75c3dde9fc10c4472b9368089d1b81d00 ("pwm: Set
-class for exported channels in sysfs") as it causes regression with
-multiple pwm chip[1], when exporting a pwm channel (echo X > export):
-
-- ABI (Documentation/ABI/testing/sysfs-class-pwm) states pwmX should be
- created in /sys/class/pwm/pwmchipN/pwmX
-- Reverted patch causes new entry to be also created directly in
- /sys/class/pwm/pwmX
-- 1st time, exporting pwmX will create an entry in /sys/class/pwm/pwmX
-- class attributes are added under pwmX folder, such as export, unexport
- npwm, symlinks. This is wrong as it belongs to pwmchipN. It may cause
- bad behavior and report wrong values.
-- when another export happens on another pwmchip, it can't be created
- (e.g. -EEXIST). This is causing the issue with multiple pwmchip.
-
-Example on stm32 (stm32429i-eval) platform:
-$ ls /sys/class/pwm
-pwmchip0 pwmchip4
-
-$ cd /sys/class/pwm/pwmchip0/
-$ echo 0 > export
-$ ls /sys/class/pwm
-pwm0 pwmchip0 pwmchip4
-
-$ cd /sys/class/pwm/pwmchip4/
-$ echo 0 > export
-sysfs: cannot create duplicate filename '/class/pwm/pwm0'
-...Exception stack follows...
-
-This is also seen on other platform [2]
-
-[1] https://lkml.org/lkml/2018/9/25/713
-[2] https://lkml.org/lkml/2018/9/25/447
-
-Signed-off-by: Fabrice Gasnier <fabrice.gasnier@st.com>
-Tested-by: Gottfried Haider <gottfried.haider@gmail.com>
-Tested-by: Michal Vokáč <michal.vokac@ysoft.com>
-Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
----
- drivers/pwm/sysfs.c | 1 -
- 1 file changed, 1 deletion(-)
-
---- a/drivers/pwm/sysfs.c
-+++ b/drivers/pwm/sysfs.c
-@@ -263,7 +263,6 @@ static int pwm_export_child(struct devic
- export->pwm = pwm;
- mutex_init(&export->lock);
-
-- export->child.class = parent->class;
- export->child.release = pwm_export_release;
- export->child.parent = parent;
- export->child.devt = MKDEV(0, 0);