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UPSTREAM: usb: xhci: Set quirk for XHCI_SG_TRB_CACHE_SIZE_QUIRK

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This commit uses the private data passed by parent device
to set the quirk for Synopsys xHC. This patch fixes the
SNPS xHC hang issue when the data is scattered across
small buffers which does not make atleast MPS size for
given TRB cache size of SNPS xHC.

Change-Id: I1eb96096cfb7500b5ef4eb866170642bff0b2133
Signed-off-by: Tejas Joglekar <joglekar@synopsys.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Link: https://lore.kernel.org/r/20201208092912.1773650-2-mathias.nyman@linux.intel.com
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Prashanth K <quic_prashk@quicinc.com>
This commit is contained in:
Prashanth K
2025-02-25 14:37:32 +05:30
parent cc93684364
commit 2a4f06f92c
2 changed files with 4 additions and 0 deletions
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3
drivers/usb/host/xhci-plat.c
View File

@@ -336,6 +336,9 @@ static int xhci_plat_probe(struct platform_device *pdev)
if ((xhci->quirks & XHCI_SKIP_PHY_INIT) || (priv && (priv->quirks & XHCI_SKIP_PHY_INIT)))
hcd->skip_phy_initialization = 1;
if (priv && (priv->quirks & XHCI_SG_TRB_CACHE_SIZE_QUIRK))
xhci->quirks |= XHCI_SG_TRB_CACHE_SIZE_QUIRK;
ret = usb_add_hcd(hcd, irq, IRQF_SHARED);
if (ret)
goto disable_usb_phy;

1
drivers/usb/host/xhci.h
View File

@@ -1891,6 +1891,7 @@ struct xhci_hcd {
#define XHCI_SNPS_BROKEN_SUSPEND BIT_ULL(35)
#define XHCI_SKIP_PHY_INIT BIT_ULL(37)
#define XHCI_DISABLE_SPARSE BIT_ULL(38)
#define XHCI_SG_TRB_CACHE_SIZE_QUIRK BIT_ULL(39)
#define XHCI_NO_SOFT_RETRY BIT_ULL(40)
unsigned int num_active_eps;