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sfc: work around TRIGGER_INTERRUPT command not working on SFC9140

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MC_CMD_TRIGGER_INTERRUPT does not work on the SFC9140, as used in the
sfn7x42q and sfn7x24f.
Check for this using the MCDI workaround mechanism.
The command is only used during self test.  If it's not supported, skip
the interrupt test.

Signed-off-by: Edward Cree <ecree@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Jon Cooper 2016-08-26 15:13:30 +01:00 • committed by David S. Miller
parent df0562c386
commit 942e298eba
7 changed files with 23 additions and 10 deletions
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10
drivers/net/ethernet/sfc/selftest.c
View file

@ -135,11 +135,19 @@ static int efx_test_interrupts(struct efx_nic *efx,
{
unsigned long timeout, wait;
int cpu;
int rc;
netif_dbg(efx, drv, efx->net_dev, "testing interrupts\n");
tests->interrupt = -1;
efx_nic_irq_test_start(efx);
rc = efx_nic_irq_test_start(efx);
if (rc == -ENOTSUPP) {
netif_dbg(efx, drv, efx->net_dev,
"direct interrupt testing not supported\n");
tests->interrupt = 0;
return 0;
}
timeout = jiffies + IRQ_TIMEOUT;
wait = 1;