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Subject[PATCH 4.14 071/100] xhci: Allow more than 32 quirks
Date
4.14-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Marc Zyngier <marc.zyngier@arm.com>

commit 36b6857932f380fcb55c31ac75857e3e81dd583a upstream.

We now have 32 different quirks, and the field that holds them
is full. Let's bump it up to the next stage so that we can handle
some more... The type is now an unsigned long long, which is 64bit
on most architectures.

We take this opportunity to change the quirks from using (1 << x)
to BIT_ULL(x).

Tested-by: Domenico Andreoli <domenico.andreoli@linux.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Tested-by: Faiz Abbas <faiz_abbas@ti.com>
Tested-by: Domenico Andreoli <domenico.andreoli@linux.com>
Acked-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Cc: "Cherian, George" <George.Cherian@cavium.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
drivers/usb/host/xhci.c | 6 ++--
drivers/usb/host/xhci.h | 64 ++++++++++++++++++++++++------------------------
2 files changed, 36 insertions(+), 34 deletions(-)

--- a/drivers/usb/host/xhci.c
+++ b/drivers/usb/host/xhci.c
@@ -43,8 +43,8 @@ static int link_quirk;
module_param(link_quirk, int, S_IRUGO | S_IWUSR);
MODULE_PARM_DESC(link_quirk, "Don't clear the chain bit on a link TRB");

-static unsigned int quirks;
-module_param(quirks, uint, S_IRUGO);
+static unsigned long long quirks;
+module_param(quirks, ullong, S_IRUGO);
MODULE_PARM_DESC(quirks, "Bit flags for quirks to be enabled as default");

static bool td_on_ring(struct xhci_td *td, struct xhci_ring *ring)
@@ -4956,7 +4956,7 @@ int xhci_gen_setup(struct usb_hcd *hcd,
return retval;
xhci_dbg(xhci, "Called HCD init\n");

- xhci_info(xhci, "hcc params 0x%08x hci version 0x%x quirks 0x%08x\n",
+ xhci_info(xhci, "hcc params 0x%08x hci version 0x%x quirks 0x%016llx\n",
xhci->hcc_params, xhci->hci_version, xhci->quirks);

return 0;
--- a/drivers/usb/host/xhci.h
+++ b/drivers/usb/host/xhci.h
@@ -1794,12 +1794,12 @@ struct xhci_hcd {
#define XHCI_STATE_DYING (1 << 0)
#define XHCI_STATE_HALTED (1 << 1)
#define XHCI_STATE_REMOVING (1 << 2)
- unsigned int quirks;
-#define XHCI_LINK_TRB_QUIRK (1 << 0)
-#define XHCI_RESET_EP_QUIRK (1 << 1)
-#define XHCI_NEC_HOST (1 << 2)
-#define XHCI_AMD_PLL_FIX (1 << 3)
-#define XHCI_SPURIOUS_SUCCESS (1 << 4)
+ unsigned long long quirks;
+#define XHCI_LINK_TRB_QUIRK BIT_ULL(0)
+#define XHCI_RESET_EP_QUIRK BIT_ULL(1)
+#define XHCI_NEC_HOST BIT_ULL(2)
+#define XHCI_AMD_PLL_FIX BIT_ULL(3)
+#define XHCI_SPURIOUS_SUCCESS BIT_ULL(4)
/*
* Certain Intel host controllers have a limit to the number of endpoint
* contexts they can handle. Ideally, they would signal that they can't handle
@@ -1809,33 +1809,35 @@ struct xhci_hcd {
* commands, reset device commands, disable slot commands, and address device
* commands.
*/
-#define XHCI_EP_LIMIT_QUIRK (1 << 5)
-#define XHCI_BROKEN_MSI (1 << 6)
-#define XHCI_RESET_ON_RESUME (1 << 7)
-#define XHCI_SW_BW_CHECKING (1 << 8)
-#define XHCI_AMD_0x96_HOST (1 << 9)
-#define XHCI_TRUST_TX_LENGTH (1 << 10)
-#define XHCI_LPM_SUPPORT (1 << 11)
-#define XHCI_INTEL_HOST (1 << 12)
-#define XHCI_SPURIOUS_REBOOT (1 << 13)
-#define XHCI_COMP_MODE_QUIRK (1 << 14)
-#define XHCI_AVOID_BEI (1 << 15)
-#define XHCI_PLAT (1 << 16)
-#define XHCI_SLOW_SUSPEND (1 << 17)
-#define XHCI_SPURIOUS_WAKEUP (1 << 18)
+#define XHCI_EP_LIMIT_QUIRK BIT_ULL(5)
+#define XHCI_BROKEN_MSI BIT_ULL(6)
+#define XHCI_RESET_ON_RESUME BIT_ULL(7)
+#define XHCI_SW_BW_CHECKING BIT_ULL(8)
+#define XHCI_AMD_0x96_HOST BIT_ULL(9)
+#define XHCI_TRUST_TX_LENGTH BIT_ULL(10)
+#define XHCI_LPM_SUPPORT BIT_ULL(11)
+#define XHCI_INTEL_HOST BIT_ULL(12)
+#define XHCI_SPURIOUS_REBOOT BIT_ULL(13)
+#define XHCI_COMP_MODE_QUIRK BIT_ULL(14)
+#define XHCI_AVOID_BEI BIT_ULL(15)
+#define XHCI_PLAT BIT_ULL(16)
+#define XHCI_SLOW_SUSPEND BIT_ULL(17)
+#define XHCI_SPURIOUS_WAKEUP BIT_ULL(18)
/* For controllers with a broken beyond repair streams implementation */
-#define XHCI_BROKEN_STREAMS (1 << 19)
-#define XHCI_PME_STUCK_QUIRK (1 << 20)
-#define XHCI_MTK_HOST (1 << 21)
-#define XHCI_SSIC_PORT_UNUSED (1 << 22)
-#define XHCI_NO_64BIT_SUPPORT (1 << 23)
-#define XHCI_MISSING_CAS (1 << 24)
+#define XHCI_BROKEN_STREAMS BIT_ULL(19)
+#define XHCI_PME_STUCK_QUIRK BIT_ULL(20)
+#define XHCI_MTK_HOST BIT_ULL(21)
+#define XHCI_SSIC_PORT_UNUSED BIT_ULL(22)
+#define XHCI_NO_64BIT_SUPPORT BIT_ULL(23)
+#define XHCI_MISSING_CAS BIT_ULL(24)
/* For controller with a broken Port Disable implementation */
-#define XHCI_BROKEN_PORT_PED (1 << 25)
-#define XHCI_LIMIT_ENDPOINT_INTERVAL_7 (1 << 26)
-#define XHCI_U2_DISABLE_WAKE (1 << 27)
-#define XHCI_ASMEDIA_MODIFY_FLOWCONTROL (1 << 28)
-#define XHCI_SUSPEND_DELAY (1 << 30)
+#define XHCI_BROKEN_PORT_PED BIT_ULL(25)
+#define XHCI_LIMIT_ENDPOINT_INTERVAL_7 BIT_ULL(26)
+#define XHCI_U2_DISABLE_WAKE BIT_ULL(27)
+#define XHCI_ASMEDIA_MODIFY_FLOWCONTROL BIT_ULL(28)
+#define XHCI_HW_LPM_DISABLE BIT_ULL(29)
+#define XHCI_SUSPEND_DELAY BIT_ULL(30)
+#define XHCI_INTEL_USB_ROLE_SW BIT_ULL(31)

unsigned int num_active_eps;
unsigned int limit_active_eps;

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