1 files changed, 0 insertions, 106 deletions
diff --git a/target/linux/layerscape/patches-5.4/701-net-0136-bus-fsl-mc-add-device-binding-path-driver_override.patch b/target/linux/layerscape/patches-5.4/701-net-0136-bus-fsl-mc-add-device-binding-path-driver_override.patch
deleted file mode 100644
index 23a0e9b361..0000000000
--- a/target/linux/layerscape/patches-5.4/701-net-0136-bus-fsl-mc-add-device-binding-path-driver_override.patch
+++ /dev/null
@@ -1,106 +0,0 @@
-From f2991d30ff590bf932483a6dfc16c7ebe2f83341 Mon Sep 17 00:00:00 2001
-From: Laurentiu Tudor <laurentiu.tudor@nxp.com>
-Date: Fri, 13 Apr 2018 12:42:40 +0300
-Subject: [PATCH] bus: fsl-mc: add device binding path 'driver_override'
-
-This patch is required for vfio-fsl-mc meta driver to successfully bind
-layerscape container devices for device passthrough. This patch adds
-a mechanism to allow a layerscape device to specify a driver rather than
-a layerscape driver provide a device match.
-
-This patch is based on following proposed patches for PCI and platform
-devices
-- https://lkml.org/lkml/2014/4/8/571  :- For Platform devices
-- http://lists-archives.com/linux-kernel/28030441-pci-introduce-new-device-binding-path-using-pci_dev-driver_override.html
-:- For PCI devices
-
-Example to allow a device (dprc.1) to specifically bind
-with driver (vfio-fsl-mc):-
- - echo vfio-fsl-mc > /sys/bus/fsl-mc/devices/dprc.1/driver_override
- - echo dprc.1 > /sys/bus/fsl-mc/drivers/fsl_mc_dprc/unbind
- - echo dprc.1 > /sys/bus/fsl-mc/drivers/vfio-fsl-mc/bind
-
-Signed-off-by: Bharat Bhushan <Bharat.Bhushan@nxp.com>
-Signed-off-by: Laurentiu Tudor <laurentiu.tudor@nxp.com>
----
- drivers/bus/fsl-mc/fsl-mc-bus.c | 53 +++++++++++++++++++++++++++++++++++++++++
- 1 file changed, 53 insertions(+)
-
---- a/drivers/bus/fsl-mc/fsl-mc-bus.c
-+++ b/drivers/bus/fsl-mc/fsl-mc-bus.c
-@@ -83,6 +83,12 @@ static int fsl_mc_bus_match(struct devic
- 	struct fsl_mc_driver *mc_drv = to_fsl_mc_driver(drv);
- 	bool found = false;
- 
-+	/* When driver_override is set, only bind to the matching driver */
-+	if (mc_dev->driver_override) {
-+		found = !strcmp(mc_dev->driver_override, mc_drv->driver.name);
-+		goto out;
-+	}
-+
- 	if (!mc_drv->match_id_table)
- 		goto out;
- 
-@@ -147,8 +153,52 @@ static ssize_t modalias_show(struct devi
- }
- static DEVICE_ATTR_RO(modalias);
- 
-+static ssize_t driver_override_store(struct device *dev,
-+				     struct device_attribute *attr,
-+				     const char *buf, size_t count)
-+{
-+	struct fsl_mc_device *mc_dev = to_fsl_mc_device(dev);
-+	const char *driver_override, *old = mc_dev->driver_override;
-+	char *cp;
-+
-+	if (WARN_ON(dev->bus != &fsl_mc_bus_type))
-+		return -EINVAL;
-+
-+	if (count >= (PAGE_SIZE - 1))
-+		return -EINVAL;
-+
-+	driver_override = kstrndup(buf, count, GFP_KERNEL);
-+	if (!driver_override)
-+		return -ENOMEM;
-+
-+	cp = strchr(driver_override, '\n');
-+	if (cp)
-+		*cp = '\0';
-+
-+	if (strlen(driver_override)) {
-+		mc_dev->driver_override = driver_override;
-+	} else {
-+		kfree(driver_override);
-+		mc_dev->driver_override = NULL;
-+	}
-+
-+	kfree(old);
-+
-+	return count;
-+}
-+
-+static ssize_t driver_override_show(struct device *dev,
-+				    struct device_attribute *attr, char *buf)
-+{
-+	struct fsl_mc_device *mc_dev = to_fsl_mc_device(dev);
-+
-+	return snprintf(buf, PAGE_SIZE, "%s\n", mc_dev->driver_override);
-+}
-+static DEVICE_ATTR_RW(driver_override);
-+
- static struct attribute *fsl_mc_dev_attrs[] = {
- 	&dev_attr_modalias.attr,
-+	&dev_attr_driver_override.attr,
- 	NULL,
- };
- 
-@@ -749,6 +799,9 @@ EXPORT_SYMBOL_GPL(fsl_mc_device_add);
-  */
- void fsl_mc_device_remove(struct fsl_mc_device *mc_dev)
- {
-+	kfree(mc_dev->driver_override);
-+	mc_dev->driver_override = NULL;
-+
- 	/*
- 	 * The device-specific remove callback will get invoked by device_del()
- 	 */