From: "Dai, Wei" <wei.dai@intel.com>
To: "Yigit, Ferruh" <ferruh.yigit@intel.com>, "dev@dpdk.org" <dev@dpdk.org>
Cc: "Zhang, Helin" <helin.zhang@intel.com>,
"Ananyev, Konstantin" <konstantin.ananyev@intel.com>
Subject: Re: [dpdk-dev] [PATCH 2/7] net/ixgbe/base: remove a compiler warning
Date: Thu, 12 Jan 2017 14:08:42 +0000 [thread overview]
Message-ID: <49759EB36A64CF4892C1AFEC9231E8D63A3275EF@PGSMSX106.gar.corp.intel.com> (raw)
In-Reply-To: <baebd11d-586e-30ff-8530-d37261e699b0@intel.com>
> -----Original Message-----
> From: Yigit, Ferruh
> Sent: Wednesday, January 11, 2017 11:38 PM
> To: Dai, Wei <wei.dai@intel.com>; dev@dpdk.org
> Cc: Zhang, Helin <helin.zhang@intel.com>; Ananyev, Konstantin
> <konstantin.ananyev@intel.com>
> Subject: Re: [dpdk-dev] [PATCH 2/7] net/ixgbe/base: remove a compiler warning
>
> On 1/10/2017 3:45 PM, Wei Dai wrote:
> > This patch fixes a compiler warning.
>
> I guess compiler warning is because of "mac->led_link_act = i;", since
> led_link_act is 8bits..
>
> But can you please add the compile warning here, to make it more clear to
> understand what is the issue.
I have compared the generated ixgbe_common.o both from "u16 i" and "u8 I" .
Two .o files are identical.
Whether the variable i is defined as u8 or u16, there is no compile warning.
The version of gcc version is 6.3.1 20161221 (Red Hat 6.3.1-1) (GCC).
If i is u16, mac->led_link_act = i; should generate a warning, but there is no.
It is a bit weird .
As you know, this code is provided by another Intel team.
I think that it will generate a warning when they build it with their C compiler.
Anyway, to define i as u8 is better than u16 and we had better keep aligned with them.
>
> >
> > Signed-off-by: Wei Dai <wei.dai@intel.com>
> > ---
> > drivers/net/ixgbe/base/ixgbe_common.c | 2 +-
> > 1 file changed, 1 insertion(+), 1 deletion(-)
> >
> > diff --git a/drivers/net/ixgbe/base/ixgbe_common.c
> > b/drivers/net/ixgbe/base/ixgbe_common.c
> > index 18bb18c..0dd33b8 100644
> > --- a/drivers/net/ixgbe/base/ixgbe_common.c
> > +++ b/drivers/net/ixgbe/base/ixgbe_common.c
> > @@ -1150,7 +1150,7 @@ s32 ixgbe_init_led_link_act_generic(struct
> > ixgbe_hw *hw) {
> > struct ixgbe_mac_info *mac = &hw->mac;
> > u32 led_reg, led_mode;
> > - u16 i;
> > + u8 i;
> >
> > led_reg = IXGBE_READ_REG(hw, IXGBE_LEDCTL);
> >
> >
next prev parent reply other threads:[~2017-01-12 14:08 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-01-10 15:45 [dpdk-dev] [PATCH 0/7] update ixgbe shared code to version 2017-01-05 Wei Dai
2017-01-10 15:45 ` [dpdk-dev] [PATCH 1/7] net/ixgbe/base: support Broadwell-DE XFI backplane Wei Dai
2017-01-11 15:37 ` Ferruh Yigit
2017-01-12 13:17 ` Dai, Wei
2017-01-10 15:45 ` [dpdk-dev] [PATCH 2/7] net/ixgbe/base: remove a compiler warning Wei Dai
2017-01-11 15:38 ` Ferruh Yigit
2017-01-12 14:08 ` Dai, Wei [this message]
2017-01-12 14:24 ` Ferruh Yigit
2017-01-10 15:45 ` [dpdk-dev] [PATCH 3/7] net/ixgbe/base: configure speeds for KR/KX backplane Wei Dai
2017-01-10 15:45 ` [dpdk-dev] [PATCH 4/7] net/ixgbe/base: support Marvell 1000BASE-T PHYs Wei Dai
2017-01-10 15:45 ` [dpdk-dev] [PATCH 5/7] net/ixgbe/base: use clause 22 MDIO functions for Marvell PHYs Wei Dai
2017-01-10 15:45 ` [dpdk-dev] [PATCH 6/7] net/ixgbe/base: add some debug traces Wei Dai
2017-01-11 15:38 ` Ferruh Yigit
2017-01-12 14:18 ` Dai, Wei
2017-01-12 14:21 ` Ferruh Yigit
2017-01-10 15:45 ` [dpdk-dev] [PATCH 7/7] net/ixgbe/base: update version of shared code Wei Dai
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