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Message-ID: <AM3PR04MB1185882FDBB659CD433F9EBB91390@AM3PR04MB1185.eurprd04.prod.outlook.com>
Date: Tue, 5 Jul 2016 07:38:49 +0000
From: Qiang Zhao <qiang.zhao@....com>
To: Jason Cooper <jason@...edaemon.net>
CC: "oss@...error.net" <oss@...error.net>,
"tglx@...utronix.de" <tglx@...utronix.de>,
"marc.zyngier@....com" <marc.zyngier@....com>,
"linuxppc-dev@...ts.ozlabs.org" <linuxppc-dev@...ts.ozlabs.org>,
"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
Xiaobo Xie <xiaobo.xie@....com>
Subject: RE: [PATCH 2/2] qe/ic: refactor qe_ic to simplify
On 07/05/2016 11:51 AM, Jason Cooper <jason@...edaemon.net> wrote:
> -----Original Message-----
> From: Jason Cooper [mailto:jason@...edaemon.net]
> Sent: Tuesday, July 05, 2016 11:51 AM
> To: Qiang Zhao <qiang.zhao@....com>
> Cc: oss@...error.net; tglx@...utronix.de; marc.zyngier@....com; linuxppc-
> dev@...ts.ozlabs.org; linux-kernel@...r.kernel.org; Xiaobo Xie
> <xiaobo.xie@....com>
> Subject: Re: [PATCH 2/2] qe/ic: refactor qe_ic to simplify
>
> Hi Zhao Qiang,
>
> Same comment as previous patch regarding the subject line.
>
> On Tue, Jul 05, 2016 at 09:46:59AM +0800, Zhao Qiang wrote:
> > there are init_qe_ic_sysfs and qeic_of_init, refactor them.
>
> Same comment from previous patch about commit log.
>
> >
> > Signed-off-by: Zhao Qiang <qiang.zhao@....com>
> > ---
> > drivers/irqchip/qe_ic.c | 83 +++++++++++++++++++++++++------------------
> ---
> > include/soc/fsl/qe/qe_ic.h | 7 ----
> > 2 files changed, 45 insertions(+), 45 deletions(-)
> >
> > diff --git a/drivers/irqchip/qe_ic.c b/drivers/irqchip/qe_ic.c index
> > f7f9a81..46652c0 100644
> > --- a/drivers/irqchip/qe_ic.c
> > +++ b/drivers/irqchip/qe_ic.c
> > @@ -317,27 +317,35 @@ unsigned int qe_ic_get_high_irq(struct qe_ic *qe_ic)
> > return irq_linear_revmap(qe_ic->irqhost, irq); }
> >
> > -void __init qe_ic_init(struct device_node *node, unsigned int flags,
> > - void (*low_handler)(struct irq_desc *desc),
> > - void (*high_handler)(struct irq_desc *desc))
> > +static int __init qe_ic_init(unsigned int flags)
> > {
> > + struct device_node *node;
> > struct qe_ic *qe_ic;
> > struct resource res;
> > - u32 temp = 0, ret, high_active = 0;
> > + u32 temp = 0, high_active = 0;
> > + int ret = 0;
> > +
> > + node = of_find_compatible_node(NULL, NULL, "fsl,qe-ic");
> > + if (!node)
> > + return -ENODEV;
> >
> > ret = of_address_to_resource(node, 0, &res);
> > - if (ret)
> > - return;
> > + if (ret) {
> > + ret = -ENODEV;
> > + goto err_put_node;
> > + }
> >
> > qe_ic = kzalloc(sizeof(*qe_ic), GFP_KERNEL);
> > - if (qe_ic == NULL)
> > - return;
> > + if (qe_ic == NULL) {
> > + ret = -ENOMEM;
> > + goto err_put_node;
> > + }
> >
> > qe_ic->irqhost = irq_domain_add_linear(node, NR_QE_IC_INTS,
> > &qe_ic_host_ops, qe_ic);
> > if (qe_ic->irqhost == NULL) {
> > - kfree(qe_ic);
> > - return;
> > + ret = -ENOMEM;
> > + goto err_free_qe_ic;
> > }
> >
> > qe_ic->regs = ioremap(res.start, resource_size(&res)); @@ -348,9
> > +356,9 @@ void __init qe_ic_init(struct device_node *node, unsigned int
> flags,
> > qe_ic->virq_low = irq_of_parse_and_map(node, 1);
> >
> > if (qe_ic->virq_low == NO_IRQ) {
> > - printk(KERN_ERR "Failed to map QE_IC low IRQ\n");
> > - kfree(qe_ic);
> > - return;
> > + pr_err("Failed to map QE_IC low IRQ\n");
> > + ret = -ENOMEM;
> > + goto err_domain_remove;
> > }
> >
> > /* default priority scheme is grouped. If spread mode is */
> > @@ -377,13 +385,23 @@ void __init qe_ic_init(struct device_node *node,
> unsigned int flags,
> > qe_ic_write(qe_ic->regs, QEIC_CICR, temp);
> >
> > irq_set_handler_data(qe_ic->virq_low, qe_ic);
> > - irq_set_chained_handler(qe_ic->virq_low, low_handler);
> > + irq_set_chained_handler(qe_ic->virq_low, qe_ic_cascade_low_mpic);
> >
> > if (qe_ic->virq_high != NO_IRQ &&
> > qe_ic->virq_high != qe_ic->virq_low) {
> > irq_set_handler_data(qe_ic->virq_high, qe_ic);
> > - irq_set_chained_handler(qe_ic->virq_high, high_handler);
> > + irq_set_chained_handler(qe_ic->virq_high,
> > + qe_ic_cascade_high_mpic);
> > }
> > + return ret;
>
> of_node_put(node)? Explicitly return success?
Yes, thank you very much!
>
> > +
> > +err_domain_remove:
> > + irq_domain_remove(qe_ic->irqhost);
> > +err_free_qe_ic:
> > + kfree(qe_ic);
> > +err_put_node:
> > + of_node_put(node);
> > + return ret;
> > }
> >
> > void qe_ic_set_highest_priority(unsigned int virq, int high) @@
> > -490,37 +508,26 @@ static struct device device_qe_ic = {
> > .bus = &qe_ic_subsys,
> > };
> >
> > -static int __init init_qe_ic_sysfs(void)
> > +static int __init init_qe_ic(void)
> > {
> > - int rc;
> > + int ret;
> >
> > - printk(KERN_DEBUG "Registering qe_ic with sysfs...\n");
> > + ret = qe_ic_init(0);
>
> Sorry, build machine is down atm. How was qe_ic_init() called previously? Is
> that removed?
Sorry, I don't understand, could you please explain?
>
> > + if (ret)
> > + return ret;
> >
> > - rc = subsys_system_register(&qe_ic_subsys, NULL);
> > - if (rc) {
> > - printk(KERN_ERR "Failed registering qe_ic sys class\n");
> > + ret = subsys_system_register(&qe_ic_subsys, NULL);
> > + if (ret) {
> > + pr_err("Failed registering qe_ic sys class\n");
> > return -ENODEV;
> > }
> > - rc = device_register(&device_qe_ic);
> > - if (rc) {
> > - printk(KERN_ERR "Failed registering qe_ic sys device\n");
> > + ret = device_register(&device_qe_ic);
> > + if (ret) {
> > + pr_err("Failed registering qe_ic sys device\n");
> > return -ENODEV;
> > }
> > - return 0;
> > -}
> >
> > -static int __init qeic_of_init(void)
> > -{
> > - struct device_node *np;
> > -
> > - np = of_find_compatible_node(NULL, NULL, "fsl,qe-ic");
> > - if (np) {
> > - qe_ic_init(np, 0, qe_ic_cascade_low_mpic,
> > - qe_ic_cascade_high_mpic);
> > - of_node_put(np);
> > - }
> > return 0;
> > }
> >
> > -subsys_initcall(qeic_of_init);
> > -subsys_initcall(init_qe_ic_sysfs);
> > +subsys_initcall(init_qe_ic);
> > diff --git a/include/soc/fsl/qe/qe_ic.h b/include/soc/fsl/qe/qe_ic.h
> > index 1e155ca..6113699 100644
> > --- a/include/soc/fsl/qe/qe_ic.h
> > +++ b/include/soc/fsl/qe/qe_ic.h
> > @@ -58,16 +58,9 @@ enum qe_ic_grp_id { };
> >
> > #ifdef CONFIG_QUICC_ENGINE
> > -void qe_ic_init(struct device_node *node, unsigned int flags,
> > - void (*low_handler)(struct irq_desc *desc),
> > - void (*high_handler)(struct irq_desc *desc));
> > unsigned int qe_ic_get_low_irq(struct qe_ic *qe_ic); unsigned int
> > qe_ic_get_high_irq(struct qe_ic *qe_ic); #else -static inline void
> > qe_ic_init(struct device_node *node, unsigned int flags,
> > - void (*low_handler)(struct irq_desc *desc),
> > - void (*high_handler)(struct irq_desc *desc))
> > -{}
> > static inline unsigned int qe_ic_get_low_irq(struct qe_ic *qe_ic) {
> > return 0; } static inline unsigned int qe_ic_get_high_irq(struct
> > qe_ic *qe_ic)
-Zhao Qiang
BR
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