kernel: delete Linux 5.4 config and patches

As the upcoming release will be based on Linux 5.10 only, remove all
kernel configuration as well as patches for Linux 5.4.
There were no targets still actively using Linux 5.4.

Signed-off-by: Daniel Golle <daniel@makrotopia.org>
(cherry picked from commit 3a14580411adfb75f9a44eded9f41245b9e44606)

1 files changed, 0 insertions, 83 deletions

diff --git a/target/linux/layerscape/patches-5.4/805-display-0022-drm-mhdp-add-mutex-lock-to-mhdp-register-access-func.patch b/target/linux/layerscape/patches-5.4/805-display-0022-drm-mhdp-add-mutex-lock-to-mhdp-register-access-func.patch
deleted file mode 100644
index 0fc3d13758..0000000000
--- a/target/linux/layerscape/patches-5.4/805-display-0022-drm-mhdp-add-mutex-lock-to-mhdp-register-access-func.patch
+++ /dev/null
@@ -1,83 +0,0 @@
-From ef8be75663178c0720d0944d9305f624776fc91c Mon Sep 17 00:00:00 2001
-From: Sandor Yu <Sandor.yu@nxp.com>
-Date: Thu, 17 Oct 2019 16:29:49 +0800
-Subject: [PATCH] drm: mhdp: add mutex lock to mhdp register access function
-
-Add muxtex lock to mhdp registers access functions
-that could avoid race condition between cec thread and hdmi video.
-
-Signed-off-by: Sandor Yu <Sandor.yu@nxp.com>
----
- drivers/gpu/drm/bridge/cadence/cdns-dp-core.c     | 1 +
- drivers/gpu/drm/bridge/cadence/cdns-hdmi-core.c   | 1 +
- drivers/gpu/drm/bridge/cadence/cdns-mhdp-common.c | 8 ++++++++
- include/drm/bridge/cdns-mhdp-common.h             | 1 +
- 4 files changed, 11 insertions(+)
-
---- a/drivers/gpu/drm/bridge/cadence/cdns-dp-core.c
-+++ b/drivers/gpu/drm/bridge/cadence/cdns-dp-core.c
-@@ -410,6 +410,7 @@ static int __cdns_dp_probe(struct platfo
- 	int ret;
- 
- 	mutex_init(&mhdp->lock);
-+	mutex_init(&mhdp->iolock);
- 
- 	INIT_DELAYED_WORK(&mhdp->hotplug_work, hotplug_work_func);
- 
---- a/drivers/gpu/drm/bridge/cadence/cdns-hdmi-core.c
-+++ b/drivers/gpu/drm/bridge/cadence/cdns-hdmi-core.c
-@@ -411,6 +411,7 @@ static int __cdns_hdmi_probe(struct plat
- 	int ret;
- 
- 	mutex_init(&mhdp->lock);
-+	mutex_init(&mhdp->iolock);
- 
- 	INIT_DELAYED_WORK(&mhdp->hotplug_work, hotplug_work_func);
- 
---- a/drivers/gpu/drm/bridge/cadence/cdns-mhdp-common.c
-+++ b/drivers/gpu/drm/bridge/cadence/cdns-mhdp-common.c
-@@ -75,6 +75,8 @@ u32 cdns_mhdp_bus_read(struct cdns_mhdp_
- {
- 	u32 val;
- 
-+	mutex_lock(&mhdp->iolock);
-+
- 	if (mhdp->bus_type == BUS_TYPE_LOW4K_SAPB) {
- 		/* Remap address to low 4K SAPB bus */
- 		writel(offset >> 12, mhdp->regs_sec + 0xc);
-@@ -88,12 +90,16 @@ u32 cdns_mhdp_bus_read(struct cdns_mhdp_
- 	else
- 		val = readl(mhdp->regs_base + offset);
- 
-+	mutex_unlock(&mhdp->iolock);
-+
- 	return val;
- }
- EXPORT_SYMBOL(cdns_mhdp_bus_read);
- 
- void cdns_mhdp_bus_write(u32 val, struct cdns_mhdp_device *mhdp, u32 offset)
- {
-+	mutex_lock(&mhdp->iolock);
-+
- 	if (mhdp->bus_type == BUS_TYPE_LOW4K_SAPB) {
- 		/* Remap address to low 4K SAPB bus */
- 		writel(offset >> 12, mhdp->regs_sec + 0xc);
-@@ -106,6 +112,8 @@ void cdns_mhdp_bus_write(u32 val, struct
- 		writel(val, mhdp->regs_sec + offset);
- 	else
- 		writel(val, mhdp->regs_base + offset);
-+
-+	mutex_unlock(&mhdp->iolock);
- }
- EXPORT_SYMBOL(cdns_mhdp_bus_write);
- 
---- a/include/drm/bridge/cdns-mhdp-common.h
-+++ b/include/drm/bridge/cdns-mhdp-common.h
-@@ -685,6 +685,7 @@ struct cdns_mhdp_device {
- 	bool plugged;
- 	bool is_hpd;
- 	struct mutex lock;
-+	struct mutex iolock;
- 
- 	int irq[IRQ_NUM];
-