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Diffstat (limited to 'target/linux/oxnas/patches-4.14/001-irqchip-versatile-fpga-Handle-chained-IRQs-properly.patch')
-rw-r--r--target/linux/oxnas/patches-4.14/001-irqchip-versatile-fpga-Handle-chained-IRQs-properly.patch77
1 files changed, 0 insertions, 77 deletions
diff --git a/target/linux/oxnas/patches-4.14/001-irqchip-versatile-fpga-Handle-chained-IRQs-properly.patch b/target/linux/oxnas/patches-4.14/001-irqchip-versatile-fpga-Handle-chained-IRQs-properly.patch
deleted file mode 100644
index f4285aadd0..0000000000
--- a/target/linux/oxnas/patches-4.14/001-irqchip-versatile-fpga-Handle-chained-IRQs-properly.patch
+++ /dev/null
@@ -1,77 +0,0 @@
-From patchwork Thu Mar 19 02:34:48 2020
-Content-Type: text/plain; charset="utf-8"
-MIME-Version: 1.0
-Content-Transfer-Encoding: 7bit
-X-Patchwork-Submitter: Sungbo Eo <mans0n@gorani.run>
-X-Patchwork-Id: 11446405
-From: Sungbo Eo <mans0n@gorani.run>
-To: Linus Walleij <linus.walleij@linaro.org>,
- Thomas Gleixner <tglx@linutronix.de>, Jason Cooper <jason@lakedaemon.net>,
- Marc Zyngier <maz@kernel.org>, linux-arm-kernel@lists.infradead.org,
- linux-kernel@vger.kernel.org, linux-oxnas@groups.io
-Subject: [PATCH v2] irqchip/versatile-fpga: Handle chained IRQs properly
-Date: Thu, 19 Mar 2020 11:34:48 +0900
-Message-Id: <20200319023448.1479701-1-mans0n@gorani.run>
-In-Reply-To: <002b72cab9896fa5ac76a52e0cb503ff@kernel.org>
-References: <002b72cab9896fa5ac76a52e0cb503ff@kernel.org>
-MIME-Version: 1.0
-List-Id: <linux-arm-kernel.lists.infradead.org>
-Cc: Sungbo Eo <mans0n@gorani.run>, Neil Armstrong <narmstrong@baylibre.com>
-Sender: "linux-arm-kernel" <linux-arm-kernel-bounces@lists.infradead.org>
-
-Enclose the chained handler with chained_irq_{enter,exit}(), so that the
-muxed interrupts get properly acked.
-
-This patch also fixes a reboot bug on OX820 SoC, where the jiffies timer
-interrupt is never acked. The kernel waits a clock tick forever in
-calibrate_delay_converge(), which leads to a boot hang.
-
-Fixes: c41b16f8c9d9 ("ARM: integrator/versatile: consolidate FPGA IRQ handling code")
-Signed-off-by: Sungbo Eo <mans0n@gorani.run>
-Cc: Neil Armstrong <narmstrong@baylibre.com>
----
-v2: moved readl below chained_irq_enter()
- added Fixes tag
-
- drivers/irqchip/irq-versatile-fpga.c | 12 ++++++++++--
- 1 file changed, 10 insertions(+), 2 deletions(-)
-
---- a/drivers/irqchip/irq-versatile-fpga.c
-+++ b/drivers/irqchip/irq-versatile-fpga.c
-@@ -6,6 +6,7 @@
- #include <linux/irq.h>
- #include <linux/io.h>
- #include <linux/irqchip.h>
-+#include <linux/irqchip/chained_irq.h>
- #include <linux/irqchip/versatile-fpga.h>
- #include <linux/irqdomain.h>
- #include <linux/module.h>
-@@ -68,12 +69,16 @@ static void fpga_irq_unmask(struct irq_d
-
- static void fpga_irq_handle(struct irq_desc *desc)
- {
-+ struct irq_chip *chip = irq_desc_get_chip(desc);
- struct fpga_irq_data *f = irq_desc_get_handler_data(desc);
-- u32 status = readl(f->base + IRQ_STATUS);
-+ u32 status;
-
-+ chained_irq_enter(chip, desc);
-+
-+ status = readl(f->base + IRQ_STATUS);
- if (status == 0) {
- do_bad_IRQ(desc);
-- return;
-+ goto out;
- }
-
- do {
-@@ -82,6 +87,9 @@ static void fpga_irq_handle(struct irq_d
- status &= ~(1 << irq);
- generic_handle_irq(irq_find_mapping(f->domain, irq));
- } while (status);
-+
-+out:
-+ chained_irq_exit(chip, desc);
- }
-
- /*