redonkable/alistair23-linux
redonkable/alistair23-linux
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alistair23-linux/drivers/usb/host
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Ming Lei 41f05dedea usb: ehci: remove the 1st wmb in qh_append_tds 
According to ehci spec 4.10.2, Advance Queue

	If the fetched qTD has its Active bit set to a zero, the
	host controller aborts the queue advance and follows the
	queue head's horizontal pointer to the next schedule data
	structure.

the 'qtd' will be linked into qh hardware queue after the line
below

	*dummy = *qtd;

is executed and observed by EHCI HC, but EHCI HC won't have chance to
fetch the qtd descriptor pointed by 'qtd' in qh_append_tds until the
line below

	dummy->hw_token = token;	#set Active bit here

is executed by CPU and observed by EHCI HC.

There is already one 'wmb' to order writing to 'dummy'/'qtd' descriptors
and writing 'token' to 'dummy' descriptor(set Active bit), so the 1st
wmb is not needed and can be removed.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Ming Lei <tom.leiming@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-09-18 01:38:59 -07:00
..
whci treewide: Convert uses of struct resource to resource_size(ptr) 2011-06-10 14:55:36 +02:00
ehci-ath79.c Merge branch 'master' into for-next 2011-07-11 14:15:55 +02:00
ehci-atmel.c USB: EHCI: Support controllers with big endian capability regs 2011-05-03 11:43:21 -07:00
ehci-au1xxx.c USB: EHCI: remove usages of hcd->state 2011-08-22 15:57:01 -07:00
ehci-cns3xxx.c treewide: Convert uses of struct resource to resource_size(ptr) 2011-06-10 14:55:36 +02:00
ehci-dbg.c USB: EHCI: remove usages of hcd->state 2011-08-22 15:57:01 -07:00
ehci-fsl.c USB: EHCI: remove usages of hcd->state 2011-08-22 15:57:01 -07:00
ehci-fsl.h USB: ehci-fsl: add MPC5121E specific suspend and resume 2011-05-02 16:59:36 -07:00
ehci-grlib.c treewide: Convert uses of struct resource to resource_size(ptr) 2011-06-10 14:55:36 +02:00
ehci-hcd.c usb: ehci: fix comment for EHCI_SHRINK_JIFFIES 2011-09-18 01:38:59 -07:00
ehci-hub.c Merge 3.1-rc4 into usb-next 2011-08-29 08:56:17 -07:00
ehci-ixp4xx.c treewide: Convert uses of struct resource to resource_size(ptr) 2011-06-10 14:55:36 +02:00
ehci-lpm.c USB: Mark EHCI LPM functions as __maybe_unused 2011-02-17 10:47:55 -08:00
ehci-mem.c USB: EHCI: AMD periodic frame list table quirk 2010-11-16 13:36:40 -08:00
ehci-msm.c ehci-msm : use ehci_setup 2011-07-08 14:51:29 -07:00
ehci-mxc.c usb/ehci-mxc: add missing inclusion of mach/hardware.h 2011-08-08 12:34:45 -07:00
ehci-octeon.c treewide: Convert uses of struct resource to resource_size(ptr) 2011-06-10 14:55:36 +02:00
ehci-omap.c usb: host: ehci-omap: fix .remove and failure handling path of .probe(v1) 2011-08-01 22:06:48 +03:00
ehci-orion.c USB: EHCI: Support controllers with big endian capability regs 2011-05-03 11:43:21 -07:00
ehci-pci.c USB: EHCI: remove usages of hcd->state 2011-08-22 15:57:01 -07:00
ehci-pmcmsp.c treewide: Convert uses of struct resource to resource_size(ptr) 2011-06-10 14:55:36 +02:00
ehci-ppc-of.c treewide: Convert uses of struct resource to resource_size(ptr) 2011-06-10 14:55:36 +02:00
ehci-ps3.c USB: EHCI: Support controllers with big endian capability regs 2011-05-03 11:43:21 -07:00
ehci-pxa168.c USB: pxa168: Add onchip USB host controller support 2011-08-22 15:38:30 -07:00
ehci-q.c usb: ehci: remove the 1st wmb in qh_append_tds 2011-09-18 01:38:59 -07:00
ehci-s5p.c Merge 3.1-rc4 into usb-next 2011-08-29 08:56:17 -07:00
ehci-sched.c USB: EHCI: remove usages of hcd->state 2011-08-22 15:57:01 -07:00
ehci-sh.c USB: EHCI: Support controllers with big endian capability regs 2011-05-03 11:43:21 -07:00
ehci-spear.c USB: EHCI: Support controllers with big endian capability regs 2011-05-03 11:43:21 -07:00
ehci-sysfs.c USB: EHCI: Allow users to override 80% max periodic bandwidth 2011-07-08 14:51:33 -07:00
ehci-tegra.c USB: EHCI: Support controllers with big endian capability regs 2011-05-03 11:43:21 -07:00
ehci-vt8500.c USB: EHCI: Support controllers with big endian capability regs 2011-05-03 11:43:21 -07:00
ehci-w90x900.c treewide: Convert uses of struct resource to resource_size(ptr) 2011-06-10 14:55:36 +02:00
ehci-xilinx-of.c treewide: Convert uses of struct resource to resource_size(ptr) 2011-06-10 14:55:36 +02:00
ehci-xls.c usb: OHCI/EHCI support for Netlogic XLS processor. 2011-08-22 15:54:38 -07:00
ehci.h USB: EHCI: remove usages of hcd->state 2011-08-22 15:57:01 -07:00
fhci-dbg.c USB: make hcd.h public (drivers dependency) 2010-05-20 13:21:30 -07:00
fhci-hcd.c usb: fhci-hcd: Allocate pram dynamically. 2011-08-23 09:47:39 -07:00
fhci-hub.c USB: make hcd.h public (drivers dependency) 2010-05-20 13:21:30 -07:00
fhci-mem.c USB: make hcd.h public (drivers dependency) 2010-05-20 13:21:30 -07:00
fhci-q.c USB: make hcd.h public (drivers dependency) 2010-05-20 13:21:30 -07:00
fhci-sched.c fix comment/printk typos concerning "already" 2010-07-11 21:45:40 +02:00
fhci-tds.c Fix common misspellings 2011-03-31 11:26:23 -03:00
fhci.h Fix common misspellings 2011-03-31 11:26:23 -03:00
fsl-mph-dr-of.c USB: ehci-fsl: Fix 'have_sysif_regs' detection 2011-01-22 18:38:58 -08:00
hwa-hc.c USB: convert usb_hcd bitfields into atomic flags 2010-08-10 14:35:37 -07:00
imx21-dbg.c treewide: fix a few typos in comments 2011-05-10 10:16:21 +02:00
imx21-hcd.c Fix common misspellings 2011-03-31 11:26:23 -03:00
imx21-hcd.h USB: imx21-hcd accept arbitary transfer buffer alignement. 2010-10-22 10:22:03 -07:00
isp116x-hcd.c USB: remove remaining usages of hcd->state from usbcore and fix regression 2011-05-19 16:34:04 -07:00
isp116x.h Fix common misspellings 2011-03-31 11:26:23 -03:00
isp1362-hcd.c usb: isp1362-hcd: Quieten printks 2011-08-22 15:34:26 -07:00
isp1362.h USB: host: Remove dead CONFIG_ARCH_KARO 2010-08-10 14:35:40 -07:00
isp1760-hcd.c usb/isp1760: Clear TT buffer on interrupted low & full speed transfers 2011-08-22 17:05:27 -07:00
isp1760-hcd.h usb/isp1760: Use polling instead of SOF interrupts to fix Errata 2 2011-08-22 15:32:45 -07:00
isp1760-if.c dt/usb: Eliminate users of of_platform_{,un}register_driver 2011-02-28 13:22:45 -07:00
Kconfig USB host i.MX21: remove dependency on MACH_MX21 2011-08-24 15:06:54 -07:00
Makefile USB: Add EHCI and OHCH glue for OCTEON II SOCs. 2010-10-29 19:08:44 +01:00
octeon2-common.c usb: Configure octeon2 glue logic for proper uSOF cycle period. 2011-05-03 10:09:32 -07:00
ohci-at91.c USB: ohci-at91: fix power management hanging 2010-04-30 09:25:12 -07:00
ohci-ath79.c treewide: Convert uses of struct resource to resource_size(ptr) 2011-06-10 14:55:36 +02:00
ohci-au1xxx.c USB: ohci-au1xxx: fix warning "__BIG_ENDIAN" is not defined 2011-04-13 15:44:03 -07:00
ohci-cns3xxx.c treewide: Convert uses of struct resource to resource_size(ptr) 2011-06-10 14:55:36 +02:00
ohci-da8xx.c treewide: Convert uses of struct resource to resource_size(ptr) 2011-06-10 14:55:36 +02:00
ohci-dbg.c llseek: automatically add .llseek fop 2010-10-15 15:53:27 +02:00
ohci-ep93xx.c USB: ohci-ep93xx.c: remove unused variable 2009-09-23 06:46:34 -07:00
ohci-hcd.c usb: OHCI/EHCI support for Netlogic XLS processor. 2011-08-22 15:54:38 -07:00
ohci-hub.c USB 3.0 Hub Changes 2011-03-13 18:07:11 -07:00
ohci-jz4740.c USB: ohci-jz4740: Fix spelling in MODULE_ALIAS 2010-11-11 07:14:07 -08:00
ohci-mem.c
ohci-octeon.c treewide: Convert uses of struct resource to resource_size(ptr) 2011-06-10 14:55:36 +02:00
ohci-omap.c omap: headers: Move remaining headers from include/mach to include/plat 2009-10-20 09:40:47 -07:00
ohci-omap3.c drivers/usb/host/ohci-omap3.c: test the just-initialized value 2011-08-22 16:07:40 -07:00
ohci-pci.c OHCI: fix regression caused by nVidia shutdown workaround 2011-05-17 11:20:23 -07:00
ohci-pnx4008.c i2c: Add support for custom probe function 2010-08-11 18:20:56 +02:00
ohci-pnx8550.c USB: automatically enable RHSC interrupts 2008-08-21 10:26:38 -07:00
ohci-ppc-of.c treewide: Convert uses of struct resource to resource_size(ptr) 2011-06-10 14:55:36 +02:00
ohci-ppc-soc.c treewide: Convert uses of struct resource to resource_size(ptr) 2011-06-10 14:55:36 +02:00
ohci-ps3.c usb/ps3: Add missing annotations 2009-06-16 14:17:32 +10:00
ohci-pxa27x.c drivers/usb/host/ohci-pxa27x.c: add missing clk_put 2011-06-07 09:07:47 -07:00
ohci-q.c USB: use usb_endpoint_maxp() instead of le16_to_cpu() 2011-08-23 09:47:40 -07:00
ohci-s3c2410.c USB: ohci-s3c2410: return proper error if clk_get fails 2011-05-06 18:16:40 -07:00
ohci-sa1111.c treewide: Convert uses of struct resource to resource_size(ptr) 2011-06-10 14:55:36 +02:00
ohci-sh.c usb: update email address in ohci-sh and r8a66597-hcd 2011-07-08 14:57:12 -07:00
ohci-sm501.c treewide: Convert uses of struct resource to resource_size(ptr) 2011-06-10 14:55:36 +02:00
ohci-spear.c USB host: Adding USB ehci & ohci support for spear platform 2010-11-16 13:53:29 -08:00
ohci-ssb.c Update my e-mail address 2011-07-07 15:18:01 +02:00
ohci-tmio.c treewide: Convert uses of struct resource to resource_size(ptr) 2011-06-10 14:55:36 +02:00
ohci-xls.c usb: OHCI/EHCI support for Netlogic XLS processor. 2011-08-22 15:54:38 -07:00
ohci.h Merge branch 'remove' of master.kernel.org:/home/rmk/linux-2.6-arm 2011-03-16 19:05:40 -07:00
oxu210hp-hcd.c treewide: Convert uses of struct resource to resource_size(ptr) 2011-06-10 14:55:36 +02:00
oxu210hp.h USB: replace uses of __constant_{endian} 2009-03-24 16:20:33 -07:00
pci-quirks.c usb/host/pci-quirks.c: correct annotation of `ehci_dmi_nohandoff_table' 2011-08-08 14:00:14 -07:00
pci-quirks.h Intel xhci: Support EHCI/xHCI port switching. 2011-05-27 12:07:36 -07:00
r8a66597-hcd.c USB: use usb_endpoint_maxp() instead of le16_to_cpu() 2011-08-23 09:47:40 -07:00
r8a66597.h usb: r8a66597-hcd: add function for external controller 2011-07-08 14:57:11 -07:00
sl811-hcd.c Merge branch 'usb-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6 2011-05-23 12:33:02 -07:00
sl811.h
sl811_cs.c pcmcia: Convert pcmcia_device_id declarations to const 2011-05-06 07:46:22 +02:00
u132-hcd.c usb: u132-hcd: Drop __TIME__ usage 2011-04-13 16:36:06 -07:00
uhci-debug.c USB: UHCI: Add support for big endian descriptors 2011-05-19 16:43:20 -07:00
uhci-grlib.c treewide: Convert uses of struct resource to resource_size(ptr) 2011-06-10 14:55:36 +02:00
uhci-hcd.c Merge branch 'usb-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6 2011-05-23 12:33:02 -07:00
uhci-hcd.h USB: UHCI: Add support for big endian descriptors 2011-05-19 16:43:20 -07:00
uhci-hub.c USB: UHCI: Wrap I/O register accesses 2011-05-06 18:24:01 -07:00
uhci-pci.c USB: UHCI: Move PCI specific functions to uhci-pci.c 2011-05-06 18:24:00 -07:00
uhci-q.c USB: use usb_endpoint_maxp() instead of le16_to_cpu() 2011-08-23 09:47:40 -07:00
xhci-dbg.c Merge 3.0-rc2 into usb-linus as it's needed by some USB patches 2011-06-14 06:51:23 -07:00
xhci-ext-caps.h xHCI: prolong host controller halt time limit 2011-03-13 18:07:09 -07:00
xhci-hub.c xhci: Rename virt_dev->port to fake_port. 2011-09-09 15:52:52 -07:00
xhci-mem.c xHCI: refine td allocation 2011-09-09 15:52:54 -07:00
xhci-pci.c xhci: Add software BW checking quirk to Intel PPT xHCI 2011-09-09 15:52:53 -07:00
xhci-ring.c xhci: Don't print short isoc packets. 2011-09-09 15:52:54 -07:00
xhci.c xhci: Redundant check in xhci_check_args for xhci->devs 2011-09-09 15:52:54 -07:00
xhci.h xhci: Implement HS/FS/LS bandwidth checking. 2011-09-09 15:52:53 -07:00