Debian bugs #738592, #773371: correct USB3/xhci and systemd

1 files changed, 168 insertions, 0 deletions

diff --git a/debian/patches/0100-usb3-corrections.patch b/debian/patches/0100-usb3-corrections.patch
new file mode 100644
index 0000000..eb2d5a5
--- /dev/null
+++ b/debian/patches/0100-usb3-corrections.patch
@@ -0,0 +1,168 @@
+Description: work around USB3/xhci problems in Linux.
+ Backport from upstream. 
+Author: m. allan noah <kitno455 at gmail dot com>
+Origin: upstream,http://anonscm.debian.org/cgit/sane/sane-backends.git/commit/?id=014b45d920f1fb630e1a31bb01f1da02ea2a6a87
+Bug-Debian: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=738592
+Forwarded: not-needed
+Last-Update: 2014-12-26
+---
+This patch header follows DEP-3: http://dep.debian.net/deps/dep3/
+Index: trunk/sanei/sanei_usb.c
+===================================================================
+--- trunk.orig/sanei/sanei_usb.c
++++ trunk/sanei/sanei_usb.c
+@@ -154,6 +154,7 @@ typedef struct
+   SANE_Int control_in_ep;
+   SANE_Int control_out_ep;
+   SANE_Int interface_nr;
++  SANE_Int alt_setting;
+   SANE_Int missing;
+ #ifdef HAVE_LIBUSB
+   usb_dev_handle *libusb_handle;
+@@ -635,6 +636,7 @@ static void usbcall_scan_devices(void)
+ 	  device.product = pDevDesc->idProduct;
+ 	  device.method = sanei_usb_method_usbcalls;
+ 	  device.interface_nr = interface;
++	  device.alt_setting = 0;
+ 	  DBG (4, "%s: found usbcalls device (0x%04x/0x%04x) as device number %s\n", __func__,
+ 	       pDevDesc->idVendor, pDevDesc->idProduct,device.devname);
+ 	  store_device(device);
+@@ -821,7 +823,7 @@ static void libusb_scan_devices(void)
+ 		     "scanner (%d/%d)\n", __func__, dev->descriptor.idVendor,
+ 		     dev->descriptor.idProduct, interface,
+ 		     dev->descriptor.bDeviceClass,
+-		     dev->config[0].interface[interface].altsetting != 0
++		     dev->config[0].interface[interface].num_altsetting != 0
+                        ? dev->config[0].interface[interface].altsetting[0].
+ 		       bInterfaceClass : -1);
+ 	    }
+@@ -845,6 +847,7 @@ static void libusb_scan_devices(void)
+ 	  device.product = dev->descriptor.idProduct;
+ 	  device.method = sanei_usb_method_libusb;
+ 	  device.interface_nr = interface;
++	  device.alt_setting = 0;
+ 	  DBG (4,
+ 	       "%s: found libusb device (0x%04x/0x%04x) interface "
+                "%d  at %s\n", __func__,
+@@ -991,7 +994,7 @@ static void libusb_scan_devices(void)
+ 		 "%s: device 0x%04x/0x%04x, interface %d "
+ 		 "doesn't look like a scanner (%d/%d)\n", __func__,
+ 		 vid, pid, interface, desc.bDeviceClass,
+-		 (config0->interface[interface].altsetting != 0)
++		 (config0->interface[interface].num_altsetting != 0)
+ 		 ? config0->interface[interface].altsetting[0].bInterfaceClass : -1);
+ 	}
+ 
+@@ -1018,6 +1021,7 @@ static void libusb_scan_devices(void)
+       device.product = pid;
+       device.method = sanei_usb_method_libusb;
+       device.interface_nr = interface;
++      device.alt_setting = 0;
+       DBG (4,
+ 	   "%s: found libusb-1.0 device (0x%04x/0x%04x) interface "
+ 	   "%d at %s\n", __func__,
+@@ -2128,22 +2132,24 @@ sanei_usb_close (SANE_Int dn)
+   else
+ #ifdef HAVE_LIBUSB
+     {
+-#if 0
+-      /* Should only be done in case of a stall */
+-      usb_clear_halt (devices[dn].libusb_handle, devices[dn].bulk_in_ep);
+-      usb_clear_halt (devices[dn].libusb_handle, devices[dn].bulk_out_ep);
+-      usb_clear_halt (devices[dn].libusb_handle, devices[dn].iso_in_ep);
+-      /* be careful, we don't know if we are in DATA0 stage now */
+-      usb_resetep (devices[dn].libusb_handle, devices[dn].bulk_in_ep);
+-      usb_resetep (devices[dn].libusb_handle, devices[dn].bulk_out_ep);
+-      usb_resetep (devices[dn].libusb_handle, devices[dn].iso_in_ep);
+-#endif /* 0 */
++      /* This call seems to be required by Linux xhci driver
++       * even though it should be a no-op. Without it, the
++       * host or driver does not reset it's data toggle bit.
++       * We intentionally ignore the return val */
++      sanei_usb_set_altinterface (dn, devices[dn].alt_setting);
++
+       usb_release_interface (devices[dn].libusb_handle,
+ 			     devices[dn].interface_nr);
+       usb_close (devices[dn].libusb_handle);
+     }
+ #elif defined(HAVE_LIBUSB_1_0)
+     {
++      /* This call seems to be required by Linux xhci driver
++       * even though it should be a no-op. Without it, the
++       * host or driver does not reset it's data toggle bit.
++       * We intentionally ignore the return val */
++      sanei_usb_set_altinterface (dn, devices[dn].alt_setting);
++
+       libusb_release_interface (devices[dn].lu_handle,
+ 				devices[dn].interface_nr);
+       libusb_close (devices[dn].lu_handle);
+@@ -2168,7 +2174,6 @@ sanei_usb_set_timeout (SANE_Int timeout)
+ SANE_Status
+ sanei_usb_clear_halt (SANE_Int dn)
+ {
+-#ifdef HAVE_LIBUSB
+   int ret;
+ 
+   if (dn >= device_number || dn < 0)
+@@ -2177,6 +2182,14 @@ sanei_usb_clear_halt (SANE_Int dn)
+       return SANE_STATUS_INVAL;
+     }
+ 
++#ifdef HAVE_LIBUSB
++
++  /* This call seems to be required by Linux xhci driver
++   * even though it should be a no-op. Without it, the
++   * host or driver does not send the clear to the device.
++   * We intentionally ignore the return val */
++  sanei_usb_set_altinterface (dn, devices[dn].alt_setting);
++
+   ret = usb_clear_halt (devices[dn].libusb_handle, devices[dn].bulk_in_ep);
+   if (ret){
+     DBG (1, "sanei_usb_clear_halt: BULK_IN ret=%d\n", ret);
+@@ -2189,18 +2202,13 @@ sanei_usb_clear_halt (SANE_Int dn)
+     return SANE_STATUS_INVAL;
+   }
+ 
+-  /* be careful, we don't know if we are in DATA0 stage now
+-  ret = usb_resetep (devices[dn].libusb_handle, devices[dn].bulk_in_ep);
+-  ret = usb_resetep (devices[dn].libusb_handle, devices[dn].bulk_out_ep);
+-  */
+ #elif defined(HAVE_LIBUSB_1_0)
+-  int ret;
+ 
+-  if (dn >= device_number || dn < 0)
+-    {
+-      DBG (1, "sanei_usb_clear_halt: dn >= device number || dn < 0\n");
+-      return SANE_STATUS_INVAL;
+-    }
++  /* This call seems to be required by Linux xhci driver
++   * even though it should be a no-op. Without it, the
++   * host or driver does not send the clear to the device.
++   * We intentionally ignore the return val */
++  sanei_usb_set_altinterface (dn, devices[dn].alt_setting);
+ 
+   ret = libusb_clear_halt (devices[dn].lu_handle, devices[dn].bulk_in_ep);
+   if (ret){
+@@ -3038,6 +3046,8 @@ sanei_usb_set_altinterface (SANE_Int dn,
+ 
+   DBG (5, "sanei_usb_set_altinterface: alternate = %d\n", alternate);
+ 
++  devices[dn].alt_setting = alternate;
++
+   if (devices[dn].method == sanei_usb_method_scanner_driver)
+     {
+ #if defined(__linux__)
+Index: trunk/ChangeLog
+===================================================================
+--- trunk.orig/ChangeLog
++++ trunk/ChangeLog
+@@ -1,3 +1,9 @@
++2014-12-16 m. allan noah <kitno455 at gmail dot com>
++	* sanei/sanei_usb.c: add calls to sanei_usb_set_altinterface in
++	sanei_usb_close and sanei_usb_clear_halt- hopefully work around
++	USB3/xhci problems in Linux.
++
++
+ ******  Release of sane-backends 1.0.24. End of code freeze ******
+ 
+ 2013-09-30 m. allan noah <kitno455 at gmail dot com>