From: Sinan Kaya <okaya@codeaurora.org>
To: Jayachandran C <jchandra@broadcom.com>,
Bjorn Helgaas <helgaas@kernel.org>,
Tomasz Nowicki <tn@semihalf.com>,
rafael@kernel.org
Cc: Arnd Bergmann <arnd@arndb.de>, Will Deacon <will.deacon@arm.com>,
Catalin Marinas <catalin.marinas@arm.com>,
Hanjun Guo <hanjun.guo@linaro.org>,
Lorenzo Pieralisi <Lorenzo.Pieralisi@arm.com>,
jiang.liu@linux.intel.com,
Stefano Stabellini <Stefano.Stabellini@eu.citrix.com>,
robert.richter@caviumnetworks.com,
Marcin Wojtas <mw@semihalf.com>,
Liviu.Dudau@arm.com, David Daney <ddaney@caviumnetworks.com>,
wangyijing@huawei.com, Suravee.Suthikulpanit@amd.com,
msalter@redhat.com, linux-pci@vger.kernel.org,
linux-arm-kernel@lists.infradead.org, linux-acpi@vger.kernel.org,
linux-kernel@vger.kernel.org, linaro-acpi@lists.linaro.org,
Jon Masters <jcm@redhat.com>
Subject: Re: [PATCH v2 4/4] ACPI: PCI: Add generic PCI host controller
Date: Thu, 14 Apr 2016 11:53:26 -0400 [thread overview]
Message-ID: <570FBCF6.50407@codeaurora.org> (raw)
In-Reply-To: <1460414707-19153-5-git-send-email-jchandra@broadcom.com>
On 4/11/2016 6:45 PM, Jayachandran C wrote:
> +/* find the entry in cfgarr which contains range bus_start..bus_end */
> +static int mcfg_lookup(u16 seg, u8 bus_start, u8 bus_end)
> +{
> + struct pci_config_window *cfg;
> + int i;
> +
> + if (!cfgarr)
> + return -ENOENT;
> +
> + for (i = 0; cfgarr[i]; i++) {
> + cfg = cfgarr[i];
> +
I see that you are allocating an array of cfgarr to keep the MCFG table entries.
The above way of checking the number of entries is not correct.
You should keep track of the number of entries you found out globally instead of
relying an element being NULL or not.
If you exceed the array size, you may or may not be lucky to find another entry
in memory.
--
Sinan Kaya
Qualcomm Technologies, Inc. on behalf of Qualcomm Innovation Center, Inc.
Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, a Linux Foundation Collaborative Project
next prev parent reply other threads:[~2016-04-14 15:53 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-04-11 22:45 [PATCH v2 0/4] ACPI based PCI host driver with generic ECAM Jayachandran C
2016-04-11 22:45 ` [PATCH v2 1/4] arm64: Prepare to use generic ACPI PCI implementation Jayachandran C
2016-04-11 22:45 ` [PATCH v2 2/4] PCI: Provide common functions for ECAM mapping Jayachandran C
2016-04-12 0:24 ` David Daney
2016-04-12 4:26 ` Jon Masters
2016-04-12 16:44 ` Lorenzo Pieralisi
2016-04-14 5:55 ` Jon Masters
2016-04-14 10:05 ` Lorenzo Pieralisi
2016-04-14 15:40 ` Jayachandran C
2016-04-11 22:45 ` [PATCH v2 3/4] PCI: generic, thunder: update to use generic ECAM API Jayachandran C
2016-04-12 0:34 ` David Daney
2016-04-14 14:15 ` Jayachandran C
2016-04-11 22:45 ` [PATCH v2 4/4] ACPI: PCI: Add generic PCI host controller Jayachandran C
2016-04-12 1:38 ` kbuild test robot
2016-04-14 15:53 ` Sinan Kaya [this message]
2016-04-14 15:58 ` Sinan Kaya
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