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sfc: add module parameter to enable MCDI logging on new functions

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As many issues are encountered at probe time, where MCDI logging can't be
 enabled through the sysfs node, this change adds a module parameter
 'mcdi_logging_default', which defaults to false.  When set to true, newly-
 probed functions will have MCDI logging enabled.  The setting can
 subsequently be changed as normal through the sysfs node.

Signed-off-by: Edward Cree <ecree@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Edward Cree 2015-05-27 13:14:26 +01:00 committed by David S. Miller
parent e7fef9b45a
commit 42ca087fbf
1 changed files with 9 additions and 0 deletions
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9
drivers/net/ethernet/sfc/mcdi.c
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@ -8,6 +8,7 @@
*/
#include <linux/delay.h>
#include <linux/moduleparam.h>
#include <asm/cmpxchg.h>
#include "net_driver.h"
#include "nic.h"
@ -54,6 +55,13 @@ static int efx_mcdi_drv_attach(struct efx_nic *efx, bool driver_operating,
static bool efx_mcdi_poll_once(struct efx_nic *efx);
static void efx_mcdi_abandon(struct efx_nic *efx);
#ifdef CONFIG_SFC_MCDI_LOGGING
static bool mcdi_logging_default;
module_param(mcdi_logging_default, bool, 0644);
MODULE_PARM_DESC(mcdi_logging_default,
"Enable MCDI logging on newly-probed functions");
#endif
int efx_mcdi_init(struct efx_nic *efx)
{
struct efx_mcdi_iface *mcdi;
@ -71,6 +79,7 @@ int efx_mcdi_init(struct efx_nic *efx)
mcdi->logging_buffer = (char *)__get_free_page(GFP_KERNEL);
if (!mcdi->logging_buffer)
goto fail1;
mcdi->logging_enabled = mcdi_logging_default;
#endif
init_waitqueue_head(&mcdi->wq);
spin_lock_init(&mcdi->iface_lock);