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cxgbe(4): Ensure that the MOD_LOAD handler runs before either t4nex or

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t5nex attach to their devices.

MFC after:	3 days
This commit is contained in:
Navdeep Parhar 2013-04-11 17:50:50 +00:00
parent 4bbec5e191
commit 13bf4b0798
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=249370
1 changed files with 9 additions and 4 deletions
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13
sys/dev/cxgbe/t4_main.c
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@ -418,7 +418,7 @@ static int read_i2c(struct adapter *, struct t4_i2c_data *);
#ifdef TCP_OFFLOAD
static int toe_capability(struct port_info *, int);
#endif
static int t4_mod_event(module_t, int, void *);
static int mod_event(module_t, int, void *);
struct {
uint16_t device;
@ -6997,12 +6997,15 @@ tweak_tunables(void)
}
static int
t4_mod_event(module_t mod, int cmd, void *arg)
mod_event(module_t mod, int cmd, void *arg)
{
int rc = 0;
static int loaded = 0;
switch (cmd) {
case MOD_LOAD:
if (atomic_fetchadd_int(&loaded, 1))
break;
t4_sge_modload();
mtx_init(&t4_list_lock, "T4 adapters", 0, MTX_DEF);
SLIST_INIT(&t4_list);
@ -7014,6 +7017,8 @@ t4_mod_event(module_t mod, int cmd, void *arg)
break;
case MOD_UNLOAD:
if (atomic_fetchadd_int(&loaded, -1) > 1)
break;
#ifdef TCP_OFFLOAD
mtx_lock(&t4_uld_list_lock);
if (!SLIST_EMPTY(&t4_uld_list)) {
@ -7041,10 +7046,10 @@ t4_mod_event(module_t mod, int cmd, void *arg)
static devclass_t t4_devclass, t5_devclass;
static devclass_t cxgbe_devclass, cxl_devclass;
DRIVER_MODULE(t4nex, pci, t4_driver, t4_devclass, t4_mod_event, 0);
DRIVER_MODULE(t4nex, pci, t4_driver, t4_devclass, mod_event, 0);
MODULE_VERSION(t4nex, 1);
DRIVER_MODULE(t5nex, pci, t5_driver, t5_devclass, 0, 0);
DRIVER_MODULE(t5nex, pci, t5_driver, t5_devclass, mod_event, 0);
MODULE_VERSION(t5nex, 1);
DRIVER_MODULE(cxgbe, t4nex, cxgbe_driver, cxgbe_devclass, 0, 0);