[linux] 02/02: uas: Fix high-order alloc

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benh pushed a commit to branch sid
in repository linux.

commit 9f9bdca061713322d9f1f6e2e71dee14f44e98fe
Author: Ben Hutchings <ben at decadent.org.uk>
Date:   Sat Mar 5 18:44:05 2016 +0000

    uas: Fix high-order alloc
---
 debian/changelog                                   |  1 +
 .../bugfix/all/uas-fix-high-order-alloc.patch      | 29 ++++++++++++++++++++++
 debian/patches/series                              |  1 +
 3 files changed, 31 insertions(+)

diff --git a/debian/changelog b/debian/changelog
index b82eb17..b846979 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -441,6 +441,7 @@ linux (4.4.4-1) UNRELEASED; urgency=medium
     - mmc-modules: Include MMC controller drivers by default
     - mmc-modules: Depends on usb-modules
     - usb-modules: Include USB PHY drivers by default
+  * uas: Fix high-order alloc
 
   [ Ian Campbell ]
   * [armhf] dts: Add DTB for Novena, patches from Vagrant Cascadian
diff --git a/debian/patches/bugfix/all/uas-fix-high-order-alloc.patch b/debian/patches/bugfix/all/uas-fix-high-order-alloc.patch
new file mode 100644
index 0000000..25b4fae
--- /dev/null
+++ b/debian/patches/bugfix/all/uas-fix-high-order-alloc.patch
@@ -0,0 +1,29 @@
+From: Hans de Goede <hdegoede at redhat.com>
+Date: Fri, 04 Mar 2016 07:18:00 +0000
+Subject: uas: Fix high-order alloc
+Origin: http://thread.gmane.org/gmane.linux.usb.general/138042/focus=111495
+
+Can you try building a kernel with the following line in drivers/usb/storage/uas.c :
+
+         .can_queue = 65536,     /* Is there a limit on the _host_ ? */
+
+(around line 815) Replaced with
+
+         .can_queue = MAX_CMNDS,
+
+That should help as MAX_CMNDS is 256, so claiming that we can queue more
+is not helpful, and that likely is what is causing this quite high order alloc.
+
+Reported-and-tested-by: Yves-Alexis Perez <corsac at corsac.net>
+---
+--- a/drivers/usb/storage/uas.c
++++ b/drivers/usb/storage/uas.c
+@@ -812,7 +812,7 @@ static struct scsi_host_template uas_hos
+ 	.slave_configure = uas_slave_configure,
+ 	.eh_abort_handler = uas_eh_abort_handler,
+ 	.eh_bus_reset_handler = uas_eh_bus_reset_handler,
+-	.can_queue = 65536,	/* Is there a limit on the _host_ ? */
++	.can_queue = MAX_CMNDS,	/* Is there a limit on the _host_ ? */
+ 	.this_id = -1,
+ 	.sg_tablesize = SG_NONE,
+ 	.skip_settle_delay = 1,
diff --git a/debian/patches/series b/debian/patches/series
index ef6054a..e8a2d17 100644
--- a/debian/patches/series
+++ b/debian/patches/series
@@ -127,3 +127,4 @@ debian/i386-686-pae-pci-set-pci-nobios-by-default.patch
 bugfix/arm/net-mv643xx_eth-fix-packet-corruption-with-tso-and-t.patch
 bugfix/x86/x86-efi-bgrt-fix-kernel-panic-when-mapping-bgrt-data.patch
 bugfix/x86/x86-efi-bgrt-replace-early_memremap-with-memremap.patch
+bugfix/all/uas-fix-high-order-alloc.patch

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