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| author | Dan Carpenter <dan.carpenter@oracle.com> | 2019-09-25 13:54:30 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-01-27 16:46:47 +0300 |
| commit | 39479c6c4695855c5d09fc2290723c8f00098110 (patch) | |
| tree | 5c4da1477569d34b9b6494123852239d4f2066b7 /drivers/net/ethernet/aquantia | |
| parent | 91586b4d9cae8fd12c6e6ae1b1c2c342c88cc95d (diff) | |
| download | linux-39479c6c4695855c5d09fc2290723c8f00098110.tar.xz | |
net: aquantia: Fix aq_vec_isr_legacy() return value
[ Upstream commit 31aefe14bc9f56566041303d733fda511d3a1c3e ]
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>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers/net/ethernet/aquantia')
| -rw-r--r-- | drivers/net/ethernet/aquantia/atlantic/aq_vec.c | 15 |
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 5fecc9a099ef..bb2894a333f2 100644 --- a/drivers/net/ethernet/aquantia/atlantic/aq_vec.c +++ b/drivers/net/ethernet/aquantia/atlantic/aq_vec.c @@ -310,15 +310,13 @@ 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, @@ -326,11 +324,10 @@ 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) |