[PATCH 2/5] xhci: Use pci_enable_msix_exact() instead of pci_enable_msix()

[PATCH 2/5] xhci: Use pci_enable_msix_exact() instead of pci_enable_msix()

[Mathias Nyman]

From: Alexander Gordeev <agordeev@redhat.com>

As result of deprecation of MSI-X/MSI enablement functions
pci_enable_msix() and pci_enable_msi_block() all drivers
using these two interfaces need to be updated to use the
new pci_enable_msi_range()  or pci_enable_msi_exact()
and pci_enable_msix_range() or pci_enable_msix_exact()
interfaces.

Signed-off-by: Alexander Gordeev <agordeev@redhat.com>
Cc: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: linux-usb@vger.kernel.org
Cc: linux-pci@vger.kernel.org
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
---
 drivers/usb/host/xhci.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c
index 988ed5f..b0b8399 100644
--- a/drivers/usb/host/xhci.c
+++ b/drivers/usb/host/xhci.c
@@ -291,7 +291,7 @@ static int xhci_setup_msix(struct xhci_hcd *xhci)
 		xhci->msix_entries[i].vector = 0;
 	}
 
-	ret = pci_enable_msix(pdev, xhci->msix_entries, xhci->msix_count);
+	ret = pci_enable_msix_exact(pdev, xhci->msix_entries, xhci->msix_count);
 	if (ret) {
 		xhci_dbg_trace(xhci, trace_xhci_dbg_init,
 				"Failed to enable MSI-X");
-- 
1.8.3.2

Re: [PATCH 2/5] xhci: Use pci_enable_msix_exact() instead of pci_enable_msix()

[Greg KH]

On Tue, Apr 22, 2014 at 03:22:59PM +0300, Mathias Nyman wrote:
> From: Alexander Gordeev <agordeev@redhat.com>
> 
> As result of deprecation of MSI-X/MSI enablement functions
> pci_enable_msix() and pci_enable_msi_block() all drivers
> using these two interfaces need to be updated to use the
> new pci_enable_msi_range()  or pci_enable_msi_exact()
> and pci_enable_msix_range() or pci_enable_msix_exact()
> interfaces.
> 
> Signed-off-by: Alexander Gordeev <agordeev@redhat.com>
> Cc: Sarah Sharp <sarah.a.sharp@linux.intel.com>
> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
> Cc: linux-usb@vger.kernel.org
> Cc: linux-pci@vger.kernel.org
> Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
> ---
>  drivers/usb/host/xhci.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c
> index 988ed5f..b0b8399 100644
> --- a/drivers/usb/host/xhci.c
> +++ b/drivers/usb/host/xhci.c
> @@ -291,7 +291,7 @@ static int xhci_setup_msix(struct xhci_hcd *xhci)
>  		xhci->msix_entries[i].vector = 0;
>  	}
>  
> -	ret = pci_enable_msix(pdev, xhci->msix_entries, xhci->msix_count);
> +	ret = pci_enable_msix_exact(pdev, xhci->msix_entries, xhci->msix_count);

Why is this change needed for 3.15-final?

Re: [PATCH 2/5] xhci: Use pci_enable_msix_exact() instead of pci_enable_msix()

[Mathias Nyman]

On 04/24/2014 10:49 PM, Greg KH wrote:
> On Tue, Apr 22, 2014 at 03:22:59PM +0300, Mathias Nyman wrote:
>> From: Alexander Gordeev <agordeev@redhat.com>
>>
>> As result of deprecation of MSI-X/MSI enablement functions
>> pci_enable_msix() and pci_enable_msi_block() all drivers
>> using these two interfaces need to be updated to use the
>> new pci_enable_msi_range()  or pci_enable_msi_exact()
>> and pci_enable_msix_range() or pci_enable_msix_exact()
>> interfaces.
>>
>> Signed-off-by: Alexander Gordeev <agordeev@redhat.com>
>> Cc: Sarah Sharp <sarah.a.sharp@linux.intel.com>
>> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
>> Cc: linux-usb@vger.kernel.org
>> Cc: linux-pci@vger.kernel.org
>> Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
>> ---
>>   drivers/usb/host/xhci.c | 2 +-
>>   1 file changed, 1 insertion(+), 1 deletion(-)
>>
>> diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c
>> index 988ed5f..b0b8399 100644
>> --- a/drivers/usb/host/xhci.c
>> +++ b/drivers/usb/host/xhci.c
>> @@ -291,7 +291,7 @@ static int xhci_setup_msix(struct xhci_hcd *xhci)
>>   		xhci->msix_entries[i].vector = 0;
>>   	}
>>
>> -	ret = pci_enable_msix(pdev, xhci->msix_entries, xhci->msix_count);
>> +	ret = pci_enable_msix_exact(pdev, xhci->msix_entries, xhci->msix_count);
>
> Why is this change needed for 3.15-final?
>

Can't remember why I thought this was needed for 3.15
Looks like other subsystems (like PCI) just queued similar MSI changes 
for 3.16.

I'll move it to the patchseries for usb-next

-Mathias