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Date:   Wed, 25 Sep 2019 11:57:59 +0000
From:   Igor Russkikh <>
To:     Dan Carpenter <>,
        David VomLehn <>
CC:     "David S. Miller" <>,
        "" <>,
        "" <>
Subject: Re: [PATCH net] net: aquantia: Fix aq_vec_isr_legacy() return value

On 25.09.2019 13:54, Dan Carpenter wrote:
> 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.

Thanks for noticing this, Dan!

> 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 <>

Reviewed-by: Igor Russkikh <>


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