On 3/9/22 14:50, cgel.zte@xxxxxxxxx wrote: > From: Minghao Chi <chi.minghao@xxxxxxxxxx> > > platform_get_resource(pdev, IORESOURCE_IRQ, ..) relies on static > allocation of IRQ resources in DT core code, this causes an issue > when using hierarchical interrupt domains using "interrupts" property > in the node as this bypasses the hierarchical setup and messes up the > irq chaining. > > In preparation for removal of static setup of IRQ resource from DT core > code use platform_get_irq(). > > v1->v2: > - Use more specific in the subject: ata: pata_pxa: > - Switch to returning 'irq' > Reported-by: Zeal Robot <zealci@xxxxxxxxxx> > Signed-off-by: Minghao Chi <chi.minghao@xxxxxxxxxx> > --- > drivers/ata/pata_pxa.c | 10 +++++----- > 1 file changed, 5 insertions(+), 5 deletions(-) > > diff --git a/drivers/ata/pata_pxa.c b/drivers/ata/pata_pxa.c > index 41430f79663c..340b274d0cad 100644 > --- a/drivers/ata/pata_pxa.c > +++ b/drivers/ata/pata_pxa.c > @@ -164,10 +164,10 @@ static int pxa_ata_probe(struct platform_device *pdev) > struct resource *cmd_res; > struct resource *ctl_res; > struct resource *dma_res; > - struct resource *irq_res; > struct pata_pxa_pdata *pdata = dev_get_platdata(&pdev->dev); > struct dma_slave_config config; > int ret = 0; > + int irq; > > /* > * Resource validation, three resources are needed: > @@ -205,9 +205,9 @@ static int pxa_ata_probe(struct platform_device *pdev) > /* > * IRQ pin > */ > - irq_res = platform_get_resource(pdev, IORESOURCE_IRQ, 0); > - if (unlikely(irq_res == NULL)) > - return -EINVAL; > + irq = platform_get_irq(pdev, 0); > + if (unlikely(irq < 0)) Please drop the unlikely() here. Not needed. This is not the hot path. > + return irq; > > /* > * Allocate the host > @@ -287,7 +287,7 @@ static int pxa_ata_probe(struct platform_device *pdev) > /* > * Activate the ATA host > */ > - ret = ata_host_activate(host, irq_res->start, ata_sff_interrupt, > + ret = ata_host_activate(host, irq, ata_sff_interrupt, > pdata->irq_flags, &pxa_ata_sht); > if (ret) > dma_release_channel(data->dma_chan); -- Damien Le Moal Western Digital Research
