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authorDan Carpenter <dan.carpenter@oracle.com>2019-09-25 13:54:30 +0300
committerDavid S. Miller <davem@davemloft.net>2019-09-27 09:59:16 +0200
commit31aefe14bc9f56566041303d733fda511d3a1c3e (patch)
treec300d9019ea60df9f8ac97e35c1bce93f68a9ce6 /drivers/net/ethernet/aquantia
parentdimlib: make DIMLIB a hidden symbol (diff)
downloadlinux-dev-31aefe14bc9f56566041303d733fda511d3a1c3e.tar.xz
linux-dev-31aefe14bc9f56566041303d733fda511d3a1c3e.zip
net: aquantia: Fix aq_vec_isr_legacy() return value
The irqreturn_t type is an enum or an unsigned int in GCC. That creates to problems because it can't detect if the self->aq_hw_ops->hw_irq_read() call fails and at the end the function always returns IRQ_HANDLED. drivers/net/ethernet/aquantia/atlantic/aq_vec.c:316 aq_vec_isr_legacy() warn: unsigned 'err' is never less than zero. drivers/net/ethernet/aquantia/atlantic/aq_vec.c:329 aq_vec_isr_legacy() warn: always true condition '(err >= 0) => (0-u32max >= 0)' Fixes: 970a2e9864b0 ("net: ethernet: aquantia: Vector operations") Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Reviewed-by: Igor Russkikh <igor.russkikh@aquantia.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/aquantia')
-rw-r--r--drivers/net/ethernet/aquantia/atlantic/aq_vec.c15
1 files changed, 6 insertions, 9 deletions
diff --git a/drivers/net/ethernet/aquantia/atlantic/aq_vec.c b/drivers/net/ethernet/aquantia/atlantic/aq_vec.c
index 28892b8acd0e..a95c263a45aa 100644
--- a/drivers/net/ethernet/aquantia/atlantic/aq_vec.c
+++ b/drivers/net/ethernet/aquantia/atlantic/aq_vec.c
@@ -306,15 +306,13 @@ irqreturn_t aq_vec_isr_legacy(int irq, void *private)
{
struct aq_vec_s *self = private;
u64 irq_mask = 0U;
- irqreturn_t err = 0;
+ int err;
- if (!self) {
- err = -EINVAL;
- goto err_exit;
- }
+ if (!self)
+ return IRQ_NONE;
err = self->aq_hw_ops->hw_irq_read(self->aq_hw, &irq_mask);
if (err < 0)
- goto err_exit;
+ return IRQ_NONE;
if (irq_mask) {
self->aq_hw_ops->hw_irq_disable(self->aq_hw,
@@ -322,11 +320,10 @@ irqreturn_t aq_vec_isr_legacy(int irq, void *private)
napi_schedule(&self->napi);
} else {
self->aq_hw_ops->hw_irq_enable(self->aq_hw, 1U);
- err = IRQ_NONE;
+ return IRQ_NONE;
}
-err_exit:
- return err >= 0 ? IRQ_HANDLED : IRQ_NONE;
+ return IRQ_HANDLED;
}
cpumask_t *aq_vec_get_affinity_mask(struct aq_vec_s *self)