linux-kernel - Re: [PATCH] usb: xhci: fix loss of data on Cadence xHC

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Message-ID: <7e73a66f-e853-4da5-bb95-f28c75d993f2@linux.intel.com>
Date: Fri, 13 Sep 2024 12:01:30 +0300
From: Mathias Nyman <mathias.nyman@...ux.intel.com>
To: Andy Shevchenko <andy.shevchenko@...il.com>,
 Pawel Laszczak <pawell@...ence.com>
Cc: "mathias.nyman@...el.com" <mathias.nyman@...el.com>,
 "gregkh@...uxfoundation.org" <gregkh@...uxfoundation.org>,
 "peter.chen@...nel.org" <peter.chen@...nel.org>,
 "linux-usb@...r.kernel.org" <linux-usb@...r.kernel.org>,
 "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
 "stable@...r.kernel.org" <stable@...r.kernel.org>
Subject: Re: [PATCH] usb: xhci: fix loss of data on Cadence xHC

On 12.9.2024 18.53, Andy Shevchenko wrote:
> Thu, Sep 05, 2024 at 07:06:48AM +0000, Pawel Laszczak kirjoitti:
>> Please ignore this patch. I send it again with correct version in subject.
> 
> It seems it's in Mathias' tree, never the less, see also below.
> 
> ...
> 
>>> +#define PCI_DEVICE_ID_CADENCE				0x17CD
> 
> First of all this is misleadig as this is VENDOR_ID, second, there is official
> ID constant for Cadence in pci_ids.h.
> 
> #define PCI_VENDOR_ID_CDNS              0x17cd
> 

Thanks, fixed and rebased.

Changes:

diff --git a/drivers/usb/host/xhci-pci.c b/drivers/usb/host/xhci-pci.c
index 5e7747f80762..4bc6ee57ec42 100644
--- a/drivers/usb/host/xhci-pci.c
+++ b/drivers/usb/host/xhci-pci.c
@@ -78,8 +78,7 @@
  #define PCI_DEVICE_ID_ASMEDIA_2142_XHCI                        0x2142
  #define PCI_DEVICE_ID_ASMEDIA_3242_XHCI                        0x3242
  
-#define PCI_DEVICE_ID_CADENCE                          0x17CD
-#define PCI_DEVICE_ID_CADENCE_SSP                      0x0200
+#define PCI_DEVICE_ID_CDNS_SSP                         0x0200
  
  static const char hcd_name[] = "xhci_hcd";
  
@@ -470,8 +469,8 @@ static void xhci_pci_quirks(struct device *dev, struct xhci_hcd *xhci)
                         xhci->quirks |= XHCI_ZHAOXIN_TRB_FETCH;
         }
  
-       if (pdev->vendor == PCI_DEVICE_ID_CADENCE &&
-           pdev->device == PCI_DEVICE_ID_CADENCE_SSP)
+       if (pdev->vendor == PCI_VENDOR_ID_CDNS &&
+           pdev->device == PCI_DEVICE_ID_CDNS_SSP)
                 xhci->quirks |= XHCI_CDNS_SCTX_QUIRK;
-Mathias