[dpdk-stable] [PATCH] raw/ifpga: fix logically dead code
Zhang, Tianfei
tianfei.zhang at intel.com
Fri May 17 07:49:48 CEST 2019
> -----Original Message-----
> From: Xu, Rosen
> Sent: Friday, May 17, 2019 12:43 PM
> To: Zhang, Tianfei <tianfei.zhang at intel.com>
> Cc: Pei, Andy <andy.pei at intel.com>; stable at dpdk.org
> Subject: RE: [PATCH] raw/ifpga: fix logically dead code
>
> Hi Tianfei,
>
> > -----Original Message-----
> > From: Zhang, Tianfei
> > Sent: Friday, May 17, 2019 19:25
> > To: Xu, Rosen <rosen.xu at intel.com>
> > Cc: Pei, Andy <andy.pei at intel.com>; Zhang, Tianfei
> > <tianfei.zhang at intel.com>; stable at dpdk.org; Zhang
> > Subject: [PATCH] raw/ifpga: fix logically dead code
> >
> > add temporary variable in max10_reg_write().
> >
> > Coverity issue: 337927
> > Cc: stable at dpdk.org
> >
> > Signed-off-by: Zhang, Tianfei <tianfei.zhang at intel.com>
> > ---
> > drivers/raw/ifpga_rawdev/base/opae_intel_max10.c | 6 ++++--
> > 1 file changed, 4 insertions(+), 2 deletions(-)
> >
> > diff --git a/drivers/raw/ifpga_rawdev/base/opae_intel_max10.c
> > b/drivers/raw/ifpga_rawdev/base/opae_intel_max10.c
> > index f354ee4b6..3ff6575d7 100644
> > --- a/drivers/raw/ifpga_rawdev/base/opae_intel_max10.c
> > +++ b/drivers/raw/ifpga_rawdev/base/opae_intel_max10.c
> > @@ -17,11 +17,13 @@ int max10_reg_read(unsigned int reg, unsigned int
> > *val)
> >
> > int max10_reg_write(unsigned int reg, unsigned int val) {
>
> If you don't need to modify val, why use const?
I don't think it is necessary to use const for val, val is quiet simple and no one will modify it.
>
> > + unsigned int tmp = val;
> > +
> > if (!g_max10)
> > return -ENODEV;
> >
> > return spi_transaction_write(g_max10->spi_tran_dev,
> > - reg, 4, (unsigned char *)&val);
> > + reg, 4, (unsigned char *)&tmp);
> > }
> >
> > struct intel_max10_device *
> > @@ -57,7 +59,7 @@ intel_max10_device_probe(struct altera_spi_device
> > *spi,
> >
> > /* set PKVL Polling manually in BBS */
> > ret = max10_reg_write(PKVL_POLLING_CTRL, 0x3);
> > - if (ret) {
> > + if (ret != 0) {
> > dev_err(dev, "%s set PKVL polling fail\n", __func__);
> > goto spi_tran_fail;
> > }
> > --
> > 2.17.1
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