The enic driver relies on the CONFIG_CPUMASK_OFFSTACK feature to
dynamically allocate a struct member, but this is normally intended for
local variables.
Building with clang, I get a warning for a few locations that check the
address of the cpumask_var_t:
drivers/net/ethernet/cisco/enic/enic_main.c:122:22: error: address of array
'enic->msix[i].affinity_mask' will always evaluate to 'true'
[-Werror,-Wpointer-bool-conversion]
As far as I can tell, the code is still correct, as the truth value of
the pointer is what we need in this configuration. To get rid of
the warning, use cpumask_available() instead of checking the
pointer directly.
Fixes: 322cf7e3a4e8 ("enic: assign affinity hint to interrupts")
Signed-off-by: Arnd Bergmann <a...@arndb.de>
---
v2: use cpumask_available() instead of open-coding a copy
---
drivers/net/ethernet/cisco/enic/enic_main.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/drivers/net/ethernet/cisco/enic/enic_main.c
b/drivers/net/ethernet/cisco/enic/enic_main.c
index 9a7f70db20c7..733d9172425b 100644
--- a/drivers/net/ethernet/cisco/enic/enic_main.c
+++ b/drivers/net/ethernet/cisco/enic/enic_main.c
@@ -119,7 +119,7 @@ static void enic_init_affinity_hint(struct enic *enic)
for (i = 0; i < enic->intr_count; i++) {
if (enic_is_err_intr(enic, i) || enic_is_notify_intr(enic, i) ||
- (enic->msix[i].affinity_mask &&
+ (cpumask_available(enic->msix[i].affinity_mask) &&
!cpumask_empty(enic->msix[i].affinity_mask)))
continue;
if (zalloc_cpumask_var(&enic->msix[i].affinity_mask,
@@ -148,7 +148,7 @@ static void enic_set_affinity_hint(struct enic *enic)
for (i = 0; i < enic->intr_count; i++) {
if (enic_is_err_intr(enic, i) ||
enic_is_notify_intr(enic, i) ||
- !enic->msix[i].affinity_mask ||
+ !cpumask_available(enic->msix[i].affinity_mask) ||
cpumask_empty(enic->msix[i].affinity_mask))
continue;
err = irq_set_affinity_hint(enic->msix_entry[i].vector,
@@ -161,7 +161,7 @@ static void enic_set_affinity_hint(struct enic *enic)
for (i = 0; i < enic->wq_count; i++) {
int wq_intr = enic_msix_wq_intr(enic, i);
- if (enic->msix[wq_intr].affinity_mask &&
+ if (cpumask_available(enic->msix[wq_intr].affinity_mask) &&
!cpumask_empty(enic->msix[wq_intr].affinity_mask))
netif_set_xps_queue(enic->netdev,
enic->msix[wq_intr].affinity_mask,
--
2.20.0
