diff options
Diffstat (limited to 'pkgs/patches-linux-5.15/0063-irqchip-armada-370-xp-Do-not-call-ipi_resume-when-IP.patch')
| -rw-r--r-- | pkgs/patches-linux-5.15/0063-irqchip-armada-370-xp-Do-not-call-ipi_resume-when-IP.patch | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/pkgs/patches-linux-5.15/0063-irqchip-armada-370-xp-Do-not-call-ipi_resume-when-IP.patch b/pkgs/patches-linux-5.15/0063-irqchip-armada-370-xp-Do-not-call-ipi_resume-when-IP.patch new file mode 100644 index 0000000..867e6dd --- /dev/null +++ b/pkgs/patches-linux-5.15/0063-irqchip-armada-370-xp-Do-not-call-ipi_resume-when-IP.patch @@ -0,0 +1,49 @@ +From 748cb95b78593cba8dd0abbbb7d466322c46bde2 Mon Sep 17 00:00:00 2001 +From: =?UTF-8?q?Pali=20Roh=C3=A1r?= <pali@kernel.org> +Date: Thu, 11 Aug 2022 10:57:05 +0200 +Subject: [PATCH 63/90] irqchip/armada-370-xp: Do not call ipi_resume() when + IPI is not used +MIME-Version: 1.0 +Content-Type: text/plain; charset=UTF-8 +Content-Transfer-Encoding: 8bit + +When IPI is not used then ipi_resume() does nothing. IPI is used only on +systems where mpic controller does not parent GIC IRQ (e.g. on Armada XP). +For documentation purpose add condition when ipi_resume() should be called. +This simplify understanding of irq-armada-370-xp.c driver when individual +driver functions are called when they do something. No functional change. + +Signed-off-by: Pali Rohár <pali@kernel.org> +--- + drivers/irqchip/irq-armada-370-xp.c | 8 ++++++-- + 1 file changed, 6 insertions(+), 2 deletions(-) + +diff --git a/drivers/irqchip/irq-armada-370-xp.c b/drivers/irqchip/irq-armada-370-xp.c +index 3fa6bd70684b..11b6ce81d17e 100644 +--- a/drivers/irqchip/irq-armada-370-xp.c ++++ b/drivers/irqchip/irq-armada-370-xp.c +@@ -509,7 +509,9 @@ static void armada_xp_mpic_reenable_percpu(void) + armada_370_xp_irq_unmask(data); + } + +- ipi_resume(); ++ /* IPI is used only when we do not have parent irq */ ++ if (parent_irq <= 0) ++ ipi_resume(); + } + + static int armada_xp_mpic_starting_cpu(unsigned int cpu) +@@ -735,7 +737,9 @@ static void armada_370_xp_mpic_resume(void) + if (doorbell_mask_reg & PCI_MSI_DOORBELL_MASK) + writel(1, per_cpu_int_base + ARMADA_370_XP_INT_CLEAR_MASK_OFFS); + +- ipi_resume(); ++ /* IPI is used only when we do not have parent irq */ ++ if (parent_irq <= 0) ++ ipi_resume(); + } + + static struct syscore_ops armada_370_xp_mpic_syscore_ops = { +-- +2.34.1 + |