kernel/0001-PCI-brcmstb-Wait-for-Raspberry-Pi-s-firmware-when-pr.patch
Justin M. Forbes 67f313c852 kernel-5.7.0-0.rc3.20200429git1d2cc5ac6f66.1
* Wed Apr 29 2020 CKI@GitLab <cki-project@redhat.com> [5.7.0-0.rc3.20200429git1d2cc5ac6f66.1]
- 1d2cc5ac6f66 rebase
- Add cec to the filter overrides ("Justin M. Forbes")
- Add overrides to filter-modules.sh ("Justin M. Forbes")
- Copy Makefile.rhelver as a source file rather than a patch (Jeremy Cline)
- Move the sed to clear the patch templating outside of conditionals ("Justin M. Forbes")
- Only include open merge requests with "Include in Releases" label (Jeremy Cline)
- Exit non-zero if the tag already exists for a release (Jeremy Cline)
- Adjust the changelog update script to not push anything (Jeremy Cline)
- Drop --target noarch from the rh-rpms make target (Jeremy Cline)
Resolves: rhbz#

Signed-off-by: Justin M. Forbes <jforbes@fedoraproject.org>
2020-04-29 16:12:02 -05:00

58 lines
1.8 KiB
Diff

From a5499259ef1b4e320f0ad3348976340c93ad30cf Mon Sep 17 00:00:00 2001
From: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
Date: Tue, 10 Mar 2020 13:52:41 +0100
Subject: [PATCH] PCI: brcmstb: Wait for Raspberry Pi's firmware when present
xHCI's PCI fixup, run at the end of pcie-brcmstb's probe, depends on
RPi4's VideoCore firmware interface to be up and running. It's possible
for both initializations to race, so make sure it's available prior to
starting.
Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
---
drivers/pci/controller/pcie-brcmstb.c | 15 +++++++++++++++
1 file changed, 15 insertions(+)
diff --git a/drivers/pci/controller/pcie-brcmstb.c b/drivers/pci/controller/pcie-brcmstb.c
index 6d79d14527a6..aee84679a997 100644
--- a/drivers/pci/controller/pcie-brcmstb.c
+++ b/drivers/pci/controller/pcie-brcmstb.c
@@ -28,6 +28,8 @@
#include <linux/string.h>
#include <linux/types.h>
+#include <soc/bcm2835/raspberrypi-firmware.h>
+
#include "../pci.h"
/* BRCM_PCIE_CAP_REGS - Offset for the mandatory capability config regs */
@@ -917,11 +919,24 @@ static int brcm_pcie_probe(struct platform_device *pdev)
{
struct device_node *np = pdev->dev.of_node, *msi_np;
struct pci_host_bridge *bridge;
+ struct device_node *fw_np;
struct brcm_pcie *pcie;
struct pci_bus *child;
struct resource *res;
int ret;
+ /*
+ * We have to wait for the Raspberry Pi's firmware interface to be up
+ * as some PCI fixups depend on it.
+ */
+ fw_np = of_find_compatible_node(NULL, NULL,
+ "raspberrypi,bcm2835-firmware");
+ if (fw_np && !rpi_firmware_get(fw_np)) {
+ of_node_put(fw_np);
+ return -EPROBE_DEFER;
+ }
+ of_node_put(fw_np);
+
bridge = devm_pci_alloc_host_bridge(&pdev->dev, sizeof(*pcie));
if (!bridge)
return -ENOMEM;
--
2.26.2