[PATCH AUTOSEL 5.4 03/12] xhci: Don't require a valid get_quirks() function pointer during xhci setup

[Sasha Levin <sashal@kernel.org>]

From: Mathias Nyman <mathias.nyman@linux.intel.com>

[ Upstream commit 9b907c91aa94522ae14bf155ce7b9ccb10a0903c ]

Not all platforms drivers need to set up custom quirks during the xhci
generic setup. Allow them to pass NULL as the function pointer when
calling xhci_gen_setup()

Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Message-ID: <20230602144009.1225632-4-mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/usb/host/xhci.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c
index eb78091d1b35e..8c276c29a29f6 100644
--- a/drivers/usb/host/xhci.c
+++ b/drivers/usb/host/xhci.c
@@ -5285,7 +5285,8 @@ int xhci_gen_setup(struct usb_hcd *hcd, xhci_get_quirks_t get_quirks)
 
 	xhci->quirks |= quirks;
 
-	get_quirks(dev, xhci);
+	if (get_quirks)
+		get_quirks(dev, xhci);
 
 	/* In xhci controllers which follow xhci 1.0 spec gives a spurious
 	 * success event after a short transfer. This quirk will ignore such
-- 
2.39.2