openwrt/target/linux/layerscape/patches-5.4/701-net-0147-bus-fsl-mc-Allocate-mc-portal-from-root-dprc-contain.patch
John Audia a47279154e kernel: bump 5.4 to 5.4.75
Manually rebased patches:
  bcm27xx:
    patches-5.4/950-0267-xhci-add-quirk-for-host-controllers-that-don-t-updat.patch
  bcm53xx:
    patches-5.4/180-usb-xhci-add-support-for-performing-fake-doorbell.patch
  layerscape:
    patches-5.4/802-can-0025-can-flexcan-add-LPSR-mode-support-for-i.MX7D.patch
    patches-5.4/808-i2c-0002-MLK-10893-i2c-imx-add-irqf_no_suspend.patch
    patches-5.4/820-usb-0016-MLK-16735-usb-host-add-XHCI_CDNS_HOST-flag.patch

Removed since could be reverse-applied by quilt:
  mediatek:
    patches-5.4/0700-arm-dts-mt7623-add-missing-pause-for-switchport.patch

All modifications made by update_kernel.sh

Build system: x86_64
Build-tested: ipq806x/R7800, ath79/generic, bcm27xx/bcm2711, x86_64
Run-tested: ipq806x/R7800, x86_64

No dmesg regressions, everything functional

Signed-off-by: John Audia <graysky@archlinux.us>
Tested-by: Curtis Deptuck <curtdept@me.com> [x86_64]

Rebase of 802-can-0025-can-flexcan-add-LPSR-mode-support-for-i.MX7D.patch
Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com>
Signed-off-by: Kevin Darbyshire-Bryant <kevin@darbyshire-bryant.me.uk>
2020-11-10 13:11:32 +01:00

46 lines
1.6 KiB
Diff

From 703972946a42cf1f83bf50cf389d618d61b69500 Mon Sep 17 00:00:00 2001
From: Bharat Bhushan <Bharat.Bhushan@nxp.com>
Date: Mon, 10 Dec 2018 14:42:51 +0530
Subject: [PATCH] bus: fsl-mc: Allocate mc-portal from root dprc container
Root dprc container have allocate-able mc-portals which
can be allocated by kernel drivers.
As per current design mc-portal is allocated from parent
dprc container if requesting device is not root-dprc.
This works fine if the requesting device is child of
root dprc container, because their parent is root-dprc
container. But if request device is grandchild of root
dprc container then it tries to allocate from it's parent
root dprc-container and it fails.
Signed-off-by: Ioana Ciornei <ioana.ciornei@nxp.com>
Signed-off-by: Bharat Bhushan <Bharat.Bhushan@nxp.com>
---
drivers/bus/fsl-mc/mc-io.c | 10 ++++++----
1 file changed, 6 insertions(+), 4 deletions(-)
--- a/drivers/bus/fsl-mc/mc-io.c
+++ b/drivers/bus/fsl-mc/mc-io.c
@@ -174,14 +174,16 @@ int __must_check fsl_mc_portal_allocate(
int error = -EINVAL;
struct fsl_mc_resource *resource = NULL;
struct fsl_mc_io *mc_io = NULL;
+ struct device *root_dprc_dev;
- if (mc_dev->flags & FSL_MC_IS_DPRC) {
+ if (fsl_mc_is_root_dprc(&mc_dev->dev)) {
mc_bus_dev = mc_dev;
} else {
- if (!dev_is_fsl_mc(mc_dev->dev.parent))
- return error;
+ fsl_mc_get_root_dprc(&mc_dev->dev, &root_dprc_dev);
+ if (WARN_ON(!root_dprc_dev))
+ return -EINVAL;
- mc_bus_dev = to_fsl_mc_device(mc_dev->dev.parent);
+ mc_bus_dev = to_fsl_mc_device(root_dprc_dev);
}
mc_bus = to_fsl_mc_bus(mc_bus_dev);