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ahci: compile out msi/msix infrastructure

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Quoting Arnd:
    The AHCI driver is used for some on-chip devices that do not use PCI
    for probing, and it can be built even when CONFIG_PCI is disabled, but
    that now results in a build failure:

    ata/libahci.c: In function 'ahci_host_activate_multi_irqs':
    ata/libahci.c:2475:4: error: invalid use of undefined type 'struct msix_entry'
    ata/libahci.c:2475:21: error: dereferencing pointer to incomplete type 'struct msix_entry'

Add ifdef CONFIG_PCI_MSI infrastructure to compile out the multi-msi and
multi-msix code.

Reported-by: Arnd Bergmann <arnd@arndb.de>
Tested--by: Arnd Bergmann <arnd@arndb.de>
[arnd: fix up pci enabled case]
Reported-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Fixes: d684a90d38 ("ahci: per-port msix support")
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
This commit is contained in:
Dan Williams
2015-12-05 16:18:44 -08:00
committed by Tejun Heo
parent 7e22c0024c
commit f893180b79
2 changed files with 25 additions and 8 deletions
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7
drivers/ata/libahci.c
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@@ -2469,12 +2469,7 @@ static int ahci_host_activate_multi_irqs(struct ata_host *host,
*/
for (i = 0; i < host->n_ports; i++) {
struct ahci_port_priv *pp = host->ports[i]->private_data;
int irq;
if (hpriv->flags & AHCI_HFLAG_MULTI_MSIX)
irq = hpriv->msix[i].vector;
else
irq = hpriv->irq + i;
int irq = ahci_irq_vector(hpriv, i);
/* Do not receive interrupts sent by dummy ports */
if (!pp) {