From: Greg KH <gregkh@linuxfoundation.org>
To: Slark Xiao <slark_xiao@163.com>
Cc: mani@kernel.org, quic_hemantk@quicinc.com, bhelgaas@google.com,
loic.poulain@linaro.org, dnlplm@gmail.com,
yonglin.tan@outlook.com, mhi@lists.linux.dev,
linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-pci@vger.kernel.org
Subject: Re: Re: [PATCH v3] PCI: Add vendor ID for QUECTEL
Date: Tue, 1 Nov 2022 07:24:58 +0100 [thread overview]
Message-ID: <Y2C7uhzVorUrfQA2@kroah.com> (raw)
In-Reply-To: <3af61b4.1f11.18431cf918d.Coremail.slark_xiao@163.com>
On Tue, Nov 01, 2022 at 02:09:57PM +0800, Slark Xiao wrote:
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> At 2022-11-01 12:46:19, "Greg KH" <gregkh@linuxfoundation.org> wrote:
> >On Tue, Nov 01, 2022 at 10:10:52AM +0800, Slark Xiao wrote:
> >> n MHI driver, there are some companies' product still do not have their
> >> own PCI vendor macro. So we add it here to make the code neat. Ref ID
> >> could be found in link https://pcisig.com/membership/member-companies.
> >>
> >> Signed-off-by: Slark Xiao <slark_xiao@163.com>
> >> ---
> >> v3: Separate different vendors into different patch.
> >>
> >> v2: Update vendor ID to the right location sorted by numeric value.
> >> ---
> >> drivers/bus/mhi/host/pci_generic.c | 6 +++---
> >> include/linux/pci_ids.h | 2 ++
> >> 2 files changed, 5 insertions(+), 3 deletions(-)
> >>
> >> diff --git a/drivers/bus/mhi/host/pci_generic.c b/drivers/bus/mhi/host/pci_generic.c
> >> index caa4ce28cf9e..81ae9c49ce2a 100644
> >> --- a/drivers/bus/mhi/host/pci_generic.c
> >> +++ b/drivers/bus/mhi/host/pci_generic.c
> >> @@ -555,11 +555,11 @@ static const struct pci_device_id mhi_pci_id_table[] = {
> >> .driver_data = (kernel_ulong_t) &mhi_telit_fn990_info },
> >> { PCI_DEVICE(PCI_VENDOR_ID_QCOM, 0x0308),
> >> .driver_data = (kernel_ulong_t) &mhi_qcom_sdx65_info },
> >> - { PCI_DEVICE(0x1eac, 0x1001), /* EM120R-GL (sdx24) */
> >> + { PCI_DEVICE(PCI_VENDOR_ID_QUECTEL, 0x1001), /* EM120R-GL (sdx24) */
> >> .driver_data = (kernel_ulong_t) &mhi_quectel_em1xx_info },
> >> - { PCI_DEVICE(0x1eac, 0x1002), /* EM160R-GL (sdx24) */
> >> + { PCI_DEVICE(PCI_VENDOR_ID_QUECTEL, 0x1002), /* EM160R-GL (sdx24) */
> >> .driver_data = (kernel_ulong_t) &mhi_quectel_em1xx_info },
> >> - { PCI_DEVICE(0x1eac, 0x2001), /* EM120R-GL for FCCL (sdx24) */
> >> + { PCI_DEVICE(PCI_VENDOR_ID_QUECTEL, 0x2001), /* EM120R-GL for FCCL (sdx24) */
> >> .driver_data = (kernel_ulong_t) &mhi_quectel_em1xx_info },
> >> /* T99W175 (sdx55), Both for eSIM and Non-eSIM */
> >> { PCI_DEVICE(PCI_VENDOR_ID_FOXCONN, 0xe0ab),
> >> diff --git a/include/linux/pci_ids.h b/include/linux/pci_ids.h
> >> index b362d90eb9b0..3c91461bcfe4 100644
> >> --- a/include/linux/pci_ids.h
> >> +++ b/include/linux/pci_ids.h
> >> @@ -2585,6 +2585,8 @@
> >> #define PCI_VENDOR_ID_TEKRAM 0x1de1
> >> #define PCI_DEVICE_ID_TEKRAM_DC290 0xdc29
> >>
> >> +#define PCI_VENDOR_ID_QUECTEL 0x1eac
> >
> >Why did you ignore the comment at the top of this file saying that new
> >entries are not needed to be added, especially for just one user?
> >
> >thanks,
> >
> >greg k-h
> Hi Greg,
> Actually I didn't see this notice before committing this patch. I even discussed
> it with the maintainer for several times and nobody show me this rule.
> I have a concern, some IOT module vendors, like QUECTEL, CINTERION(THALES),
> SIERRA,ROLLING and so on, they only produce IOT modules without other
> hardware with PCIe interface, and they applied for their own VID. But they
> can't get a their own VENDOR MARCO? This seems unreasonable.
> This change should be harmless and make the code neat.
> This is my opinion.
It causes a _LOT_ of churn and merge issues when everyone is adding new
entries to a single file. Which is why, 15+ years ago, we made the
decision that if a vendor or device id is only needed in one file, then
it should not be added to the pci_ids.h file.
No need to change that now, please just put the vendor id in the single
driver that it is needed in.
thanks,
greg k-h
next prev parent reply other threads:[~2022-11-01 6:25 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-11-01 2:10 [PATCH v3] PCI: Add vendor ID for QUECTEL Slark Xiao
2022-11-01 4:46 ` Greg KH
2022-11-01 6:09 ` Slark Xiao
2022-11-01 6:24 ` Greg KH [this message]
2022-11-01 6:52 ` Re:Re: " Slark Xiao
2022-11-01 9:13 ` Manivannan Sadhasivam
2022-11-01 14:10 ` Bjorn Helgaas
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