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author | afzal mohammed <afzal.mohd.ma@gmail.com> | 2020-03-12 09:42:55 +0300 |
---|---|---|
committer | Michael Ellerman <mpe@ellerman.id.au> | 2020-03-25 04:07:57 +0300 |
commit | b4f00d5b2098320a0d4c4a6d31099bc0c9a85b02 (patch) | |
tree | 9bc3cf4525184149b10e2803d3a726a85e03ee7d /arch/powerpc/platforms/powermac | |
parent | addf3727ad28bd159ae2da433b48daf2ffb339f7 (diff) | |
download | linux-b4f00d5b2098320a0d4c4a6d31099bc0c9a85b02.tar.xz |
powerpc: Replace setup_irq() by request_irq()
request_irq() is preferred over setup_irq(). Invocations of setup_irq()
occur after memory allocators are ready.
Per tglx[1], setup_irq() existed in olden days when allocators were not
ready by the time early interrupts were initialized.
Hence replace setup_irq() by request_irq().
[1] https://lkml.kernel.org/r/alpine.DEB.2.20.1710191609480.1971@nanos
Signed-off-by: afzal mohammed <afzal.mohd.ma@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20200312064256.18735-1-afzal.mohd.ma@gmail.com
Diffstat (limited to 'arch/powerpc/platforms/powermac')
-rw-r--r-- | arch/powerpc/platforms/powermac/pic.c | 29 | ||||
-rw-r--r-- | arch/powerpc/platforms/powermac/smp.c | 12 |
2 files changed, 16 insertions, 25 deletions
diff --git a/arch/powerpc/platforms/powermac/pic.c b/arch/powerpc/platforms/powermac/pic.c index 2e969073473d..4921bccf0376 100644 --- a/arch/powerpc/platforms/powermac/pic.c +++ b/arch/powerpc/platforms/powermac/pic.c @@ -250,20 +250,6 @@ static unsigned int pmac_pic_get_irq(void) return irq_linear_revmap(pmac_pic_host, irq); } -#ifdef CONFIG_XMON -static struct irqaction xmon_action = { - .handler = xmon_irq, - .flags = IRQF_NO_THREAD, - .name = "NMI - XMON" -}; -#endif - -static struct irqaction gatwick_cascade_action = { - .handler = gatwick_action, - .flags = IRQF_NO_THREAD, - .name = "cascade", -}; - static int pmac_pic_host_match(struct irq_domain *h, struct device_node *node, enum irq_domain_bus_token bus_token) { @@ -384,12 +370,17 @@ static void __init pmac_pic_probe_oldstyle(void) out_le32(&pmac_irq_hw[i]->enable, 0); /* Hookup cascade irq */ - if (slave && pmac_irq_cascade) - setup_irq(pmac_irq_cascade, &gatwick_cascade_action); + if (slave && pmac_irq_cascade) { + if (request_irq(pmac_irq_cascade, gatwick_action, + IRQF_NO_THREAD, "cascade", NULL)) + pr_err("Failed to register cascade interrupt\n"); + } printk(KERN_INFO "irq: System has %d possible interrupts\n", max_irqs); #ifdef CONFIG_XMON - setup_irq(irq_create_mapping(NULL, 20), &xmon_action); + i = irq_create_mapping(NULL, 20); + if (request_irq(i, xmon_irq, IRQF_NO_THREAD, "NMI - XMON", NULL)) + pr_err("Failed to register NMI-XMON interrupt\n"); #endif } @@ -441,7 +432,9 @@ static void __init pmac_pic_setup_mpic_nmi(struct mpic *mpic) nmi_irq = irq_of_parse_and_map(pswitch, 0); if (nmi_irq) { mpic_irq_set_priority(nmi_irq, 9); - setup_irq(nmi_irq, &xmon_action); + if (request_irq(nmi_irq, xmon_irq, IRQF_NO_THREAD, + "NMI - XMON", NULL)) + pr_err("Failed to register NMI-XMON interrupt\n"); } of_node_put(pswitch); } diff --git a/arch/powerpc/platforms/powermac/smp.c b/arch/powerpc/platforms/powermac/smp.c index d2900689d642..be2ab5b11e57 100644 --- a/arch/powerpc/platforms/powermac/smp.c +++ b/arch/powerpc/platforms/powermac/smp.c @@ -399,21 +399,19 @@ static int __init smp_psurge_kick_cpu(int nr) return 0; } -static struct irqaction psurge_irqaction = { - .handler = psurge_ipi_intr, - .flags = IRQF_PERCPU | IRQF_NO_THREAD, - .name = "primary IPI", -}; - static void __init smp_psurge_setup_cpu(int cpu_nr) { + unsigned long flags = IRQF_PERCPU | IRQF_NO_THREAD; + int irq; + if (cpu_nr != 0 || !psurge_start) return; /* reset the entry point so if we get another intr we won't * try to startup again */ out_be32(psurge_start, 0x100); - if (setup_irq(irq_create_mapping(NULL, 30), &psurge_irqaction)) + irq = irq_create_mapping(NULL, 30); + if (request_irq(irq, psurge_ipi_intr, flags, "primary IPI", NULL)) printk(KERN_ERR "Couldn't get primary IPI interrupt"); } |