From: Joe Perches <joe@perches.com>
To: Ethan Zhao <haifeng.zhao@intel.com>,
bhelgaas@google.com, oohall@gmail.com, ruscur@russell.cc,
lukas@wunner.de, andriy.shevchenko@linux.intel.com,
stuart.w.hayes@gmail.com, mr.nuke.me@gmail.com,
mika.westerberg@linux.intel.com
Cc: linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org,
pei.p.jia@intel.com, ashok.raj@linux.intel.com,
sathyanarayanan.kuppuswamy@intel.com
Subject: Re: [PATCH 4/5 V2] PCI: only return true when dev io state is really changed
Date: Sat, 26 Sep 2020 21:16:32 -0700 [thread overview]
Message-ID: <5e22dba6543b4fc09c5c18c839eab42bd31b18f6.camel@perches.com> (raw)
In-Reply-To: <20200927032829.11321-5-haifeng.zhao@intel.com>
On Sat, 2020-09-26 at 23:28 -0400, Ethan Zhao wrote:
> simplify the pci_dev_set_io_state() function to only return true
> when dev->error_state is changed.
[]
> diff --git a/drivers/pci/pci.h b/drivers/pci/pci.h
[]
> @@ -362,35 +362,11 @@ static inline bool pci_dev_set_io_state(struct pci_dev *dev,
> bool changed = false;
[]
> + if (dev->error_state == new)
> + return changed;
> +
> + dev->error_state = new;
> + changed = true;
> return changed;
> }
This would be simpler removing the unnecessary
changed automatic
...
if (dev->error_state == new)
return false;
dev->error_state = new;
return true;
}
next prev parent reply other threads:[~2020-09-27 4:25 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-09-27 3:28 [PATCH 0/5 V2] Fix DPC hotplug race and enhance error handling Ethan Zhao
2020-09-27 3:28 ` [PATCH 1/5 V2] PCI: define a function to check and wait till port finish DPC handling Ethan Zhao
2020-09-27 6:23 ` Christoph Hellwig
2020-09-27 6:43 ` Zhao, Haifeng
2020-09-29 2:32 ` Ethan Zhao
2020-09-27 3:28 ` [PATCH 2/5 V2] PCI: pciehp: check and wait port status out of DPC before handling DLLSC and PDC Ethan Zhao
2020-09-27 15:27 ` Sinan Kaya
2020-09-28 2:01 ` Zhao, Haifeng
2020-09-28 11:10 ` Sinan Kaya
2020-09-28 16:43 ` Sinan Kaya
2020-09-28 16:44 ` Kuppuswamy, Sathyanarayanan
2020-09-29 2:28 ` Ethan Zhao
2020-09-29 2:50 ` Ethan Zhao
2020-09-29 8:18 ` Lukas Wunner
2020-09-29 9:46 ` Ethan Zhao
2020-09-29 10:07 ` Lukas Wunner
2020-09-30 2:20 ` Ethan Zhao
2020-09-27 3:28 ` [PATCH 3/5 V2] PCI/ERR: get device before call device driver to avoid NULL pointer reference Ethan Zhao
2020-09-27 3:28 ` [PATCH 4/5 V2] PCI: only return true when dev io state is really changed Ethan Zhao
2020-09-27 4:16 ` Joe Perches [this message]
2020-09-27 5:12 ` Zhao, Haifeng
2020-09-27 3:28 ` [PATCH 5/5 V2] PCI/ERR: don't mix io state not changed and no driver together Ethan Zhao
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