kernel: bump 5.15 to 5.15.39

[openwrt/staging/chunkeey.git] / target / linux / generic / pending-5.15 / 850-0016-PCI-aardvark-Add-support-for-PME-interrupts.patch

diff --git a/target/linux/generic/pending-5.15/850-0016-PCI-aardvark-Add-support-for-PME-interrupts.patch b/target/linux/generic/pending-5.15/850-0016-PCI-aardvark-Add-support-for-PME-interrupts.patch
deleted file mode 100644 (file)
index 3b4d21e..0000000
--- a/target/linux/generic/pending-5.15/850-0016-PCI-aardvark-Add-support-for-PME-interrupts.patch
+++ /dev/null
@@ -1,46 +0,0 @@
-From 7acd8ef92e8789e10b5d736d73cea3b625087f26 Mon Sep 17 00:00:00 2001
-From: =?UTF-8?q?Pali=20Roh=C3=A1r?= <pali@kernel.org>
-Date: Wed, 8 Dec 2021 06:07:44 +0100
-Subject: [PATCH] PCI: aardvark: Add support for PME interrupts
-MIME-Version: 1.0
-Content-Type: text/plain; charset=UTF-8
-Content-Transfer-Encoding: 8bit
-
-Currently enabling PCI_EXP_RTSTA_PME bit in PCI_EXP_RTCTL register does
-nothing. This is because PCIe PME driver expects to receive PCIe interrupt
-defined in PCI_EXP_FLAGS_IRQ register, but aardvark hardware does not
-trigger PCIe INTx/MSI interrupt for PME event, rather it triggers custom
-aardvark interrupt which this driver is not processing yet.
-
-Fix this issue by handling PME interrupt in advk_pcie_handle_int() and
-chaining it to PCIe interrupt 0 with generic_handle_domain_irq() (since
-aardvark sets PCI_EXP_FLAGS_IRQ to zero). With this change PCIe PME driver
-finally starts receiving PME interrupt.
-
-Signed-off-by: Pali Rohár <pali@kernel.org>
-Signed-off-by: Marek Behún <kabel@kernel.org>
----
- drivers/pci/controller/pci-aardvark.c | 13 +++++++++++++
- 1 file changed, 13 insertions(+)
-
---- a/drivers/pci/controller/pci-aardvark.c
-+++ b/drivers/pci/controller/pci-aardvark.c
-@@ -1480,6 +1480,18 @@ static void advk_pcie_handle_int(struct
-       isr1_mask = advk_readl(pcie, PCIE_ISR1_MASK_REG);
-       isr1_status = isr1_val & ((~isr1_mask) & PCIE_ISR1_ALL_MASK);
- 
-+      /* Process PME interrupt */
-+      if (isr0_status & PCIE_MSG_PM_PME_MASK) {
-+              /*
-+               * Do not clear PME interrupt bit in ISR0, it is cleared by IRQ
-+               * receiver by writing to the PCI_EXP_RTSTA register of emulated
-+               * root bridge. Aardvark HW returns zero for PCI_EXP_FLAGS_IRQ,
-+               * so use PCIe interrupt 0.
-+               */
-+              if (generic_handle_domain_irq(pcie->irq_domain, 0) == -EINVAL)
-+                      dev_err_ratelimited(&pcie->pdev->dev, "unhandled PME IRQ\n");
-+      }
-+
-       /* Process ERR interrupt */
-       if (isr0_status & PCIE_ISR0_ERR_MASK) {
-               advk_writel(pcie, PCIE_ISR0_ERR_MASK, PCIE_ISR0_REG);