mirror of
git://git.openwrt.org/openwrt/openwrt.git
synced 2025-11-04 06:54:27 -05:00
74 lines
2.7 KiB
Diff
74 lines
2.7 KiB
Diff
From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <rafal@milecki.pl>
|
|
Subject: [PATCH] bcma: get SoC device struct & copy its DMA params to the
|
|
subdevices
|
|
MIME-Version: 1.0
|
|
Content-Type: text/plain; charset=UTF-8
|
|
Content-Transfer-Encoding: 8bit
|
|
|
|
For bus devices to be fully usable it's required to set their DMA
|
|
parameters.
|
|
|
|
For years it has been missing and remained unnoticed because of
|
|
mips_dma_alloc_coherent() silently handling the empty coherent_dma_mask.
|
|
Kernel 4.19 came with a lot of DMA changes and caused a regression on
|
|
the bcm47xx. Starting with the commit f8c55dc6e828 ("MIPS: use generic
|
|
dma noncoherent ops for simple noncoherent platforms") DMA coherent
|
|
allocations just fail. Example:
|
|
[ 1.114914] bgmac_bcma bcma0:2: Allocation of TX ring 0x200 failed
|
|
[ 1.121215] bgmac_bcma bcma0:2: Unable to alloc memory for DMA
|
|
[ 1.127626] bgmac_bcma: probe of bcma0:2 failed with error -12
|
|
[ 1.133838] bgmac_bcma: Broadcom 47xx GBit MAC driver loaded
|
|
|
|
This change fixes above regression in addition to the MIPS bcm47xx
|
|
commit 321c46b91550 ("MIPS: BCM47XX: Setup struct device for the SoC").
|
|
|
|
It also fixes another *old* GPIO regression caused by a parent pointing
|
|
to the NULL:
|
|
[ 0.157054] missing gpiochip .dev parent pointer
|
|
[ 0.157287] bcma: bus0: Error registering GPIO driver: -22
|
|
introduced by the commit 74f4e0cc6108 ("bcma: switch GPIO portions to
|
|
use GPIOLIB_IRQCHIP").
|
|
|
|
Fixes: f8c55dc6e828 ("MIPS: use generic dma noncoherent ops for simple noncoherent platforms")
|
|
Fixes: 74f4e0cc6108 ("bcma: switch GPIO portions to use GPIOLIB_IRQCHIP")
|
|
Cc: linux-mips@linux-mips.org
|
|
Cc: Christoph Hellwig <hch@lst.de>
|
|
Cc: Linus Walleij <linus.walleij@linaro.org>
|
|
Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
|
|
---
|
|
|
|
--- a/drivers/bcma/host_soc.c
|
|
+++ b/drivers/bcma/host_soc.c
|
|
@@ -191,6 +191,8 @@ int __init bcma_host_soc_init(struct bcm
|
|
struct bcma_bus *bus = &soc->bus;
|
|
int err;
|
|
|
|
+ bus->dev = soc->dev;
|
|
+
|
|
/* Scan bus and initialize it */
|
|
err = bcma_bus_early_register(bus);
|
|
if (err)
|
|
--- a/drivers/bcma/main.c
|
|
+++ b/drivers/bcma/main.c
|
|
@@ -236,13 +236,17 @@ EXPORT_SYMBOL(bcma_core_irq);
|
|
|
|
void bcma_prepare_core(struct bcma_bus *bus, struct bcma_device *core)
|
|
{
|
|
- device_initialize(&core->dev);
|
|
+ struct device *dev = &core->dev;
|
|
+
|
|
+ device_initialize(dev);
|
|
core->dev.release = bcma_release_core_dev;
|
|
core->dev.bus = &bcma_bus_type;
|
|
- dev_set_name(&core->dev, "bcma%d:%d", bus->num, core->core_index);
|
|
+ dev_set_name(dev, "bcma%d:%d", bus->num, core->core_index);
|
|
core->dev.parent = bus->dev;
|
|
- if (bus->dev)
|
|
+ if (bus->dev) {
|
|
bcma_of_fill_device(bus->dev, core);
|
|
+ dma_coerce_mask_and_coherent(dev, bus->dev->coherent_dma_mask);
|
|
+ }
|
|
|
|
switch (bus->hosttype) {
|
|
case BCMA_HOSTTYPE_PCI:
|