diff mbox

[v2,3/3] spi: pca2xx-pci: Allow MSI

Message ID 9f5bc54a5842b383dc81fa8586d6774c03d2c452.1484592296.git.jan.kiszka@siemens.com (mailing list archive)
State New, archived
Headers show

Commit Message

Jan Kiszka Jan. 16, 2017, 6:44 p.m. UTC
Now that the core is ready for edge-triggered interrupts, we can safely
allow the PCI versions that provide this to enable the feature and,
thus, have less shared interrupts.

Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
---
 drivers/spi/spi-pxa2xx-pci.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

Comments

Andy Shevchenko Jan. 16, 2017, 7:08 p.m. UTC | #1
On Mon, 2017-01-16 at 19:44 +0100, Jan Kiszka wrote:
> Now that the core is ready for edge-triggered interrupts, we can
> safely
> allow the PCI versions that provide this to enable the feature and,
> thus, have less shared interrupts.
> 

Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>



> drivers/spi/spi-pxa2xx-pci.c | 8 +++++++-
>  1 file changed, 7 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/spi/spi-pxa2xx-pci.c b/drivers/spi/spi-pxa2xx-
> pci.c
> index 58d2d48..58dcadb 100644
> --- a/drivers/spi/spi-pxa2xx-pci.c
> +++ b/drivers/spi/spi-pxa2xx-pci.c
> @@ -203,10 +203,16 @@ static int pxa2xx_spi_pci_probe(struct pci_dev
> *dev,
>  	ssp = &spi_pdata.ssp;
>  	ssp->phys_base = pci_resource_start(dev, 0);
>  	ssp->mmio_base = pcim_iomap_table(dev)[0];
> -	ssp->irq = dev->irq;
>  	ssp->port_id = (c->port_id >= 0) ? c->port_id : dev->devfn;
>  	ssp->type = c->type;
>  
> +	pci_set_master(dev);
> +
> +	ret = pci_alloc_irq_vectors(dev, 1, 1, PCI_IRQ_ALL_TYPES);
> +	if (ret < 0)
> +		return ret;

+ perhaps an empty line?

> +	ssp->irq = pci_irq_vector(dev, 0);
> +
>  	snprintf(buf, sizeof(buf), "pxa2xx-spi.%d", ssp->port_id);
>  	ssp->clk = clk_register_fixed_rate(&dev->dev, buf , NULL, 0,
 					   c->max_clk_rate);
Jarkko Nikula Jan. 17, 2017, 11:18 a.m. UTC | #2
On 01/16/2017 09:08 PM, Andy Shevchenko wrote:
> On Mon, 2017-01-16 at 19:44 +0100, Jan Kiszka wrote:
>> Now that the core is ready for edge-triggered interrupts, we can
>> safely
>> allow the PCI versions that provide this to enable the feature and,
>> thus, have less shared interrupts.
>>
>
> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
>
I was looking at is there need to call pci_free_irq_vectors() but 
pcim_release() takes care of that since this driver uses 
pcim_enable_device().

Reviewed-by: Jarkko Nikula <jarkko.nikula@linux.intel.com>
diff mbox

Patch

diff --git a/drivers/spi/spi-pxa2xx-pci.c b/drivers/spi/spi-pxa2xx-pci.c
index 58d2d48..58dcadb 100644
--- a/drivers/spi/spi-pxa2xx-pci.c
+++ b/drivers/spi/spi-pxa2xx-pci.c
@@ -203,10 +203,16 @@  static int pxa2xx_spi_pci_probe(struct pci_dev *dev,
 	ssp = &spi_pdata.ssp;
 	ssp->phys_base = pci_resource_start(dev, 0);
 	ssp->mmio_base = pcim_iomap_table(dev)[0];
-	ssp->irq = dev->irq;
 	ssp->port_id = (c->port_id >= 0) ? c->port_id : dev->devfn;
 	ssp->type = c->type;
 
+	pci_set_master(dev);
+
+	ret = pci_alloc_irq_vectors(dev, 1, 1, PCI_IRQ_ALL_TYPES);
+	if (ret < 0)
+		return ret;
+	ssp->irq = pci_irq_vector(dev, 0);
+
 	snprintf(buf, sizeof(buf), "pxa2xx-spi.%d", ssp->port_id);
 	ssp->clk = clk_register_fixed_rate(&dev->dev, buf , NULL, 0,
 					   c->max_clk_rate);