Jim Sung 28609d4083 usb: subtle increased memory usage in u_serial ...

OK, the USB gadget serial driver actually has a couple of problems.  On
gs_open(), it always allocates and queues an additional QUEUE_SIZE (16)
worth of requests, so with a loop like this:

    i=1 ; while echo $i > /dev/ttyGS0 ; do let i++ ; done

eventually we run into OOM (Out of Memory).

Technically, it is not a leak as everything gets freed up when the USB
connection is broken, but not on gs_close().

With a USB device/gadget controller driver that has limited resources
(e.g., Marvell has a this MAX_XDS_FOR_TR_CALLS of 64 for transmit and
receive), so even after 4

    stty -F /dev/ttyGS0

we cannot transmit anymore.  We can still receive (not necessarily
reliably) as now we have 16 * 4 = 64 descriptors/buffers ready, but the
device is otherwise not usable.

Signed-off-by: Jim Sung <jsung@syncadence.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

2010-11-11 07:03:48 -08:00

..

amd5536udc.c

USB: gadget: amd5536udc.c: fix error path

2010-10-22 10:22:19 -07:00

amd5536udc.h

USB: amd5536 UDC driver (in GEODE southbridge)

2007-07-19 17:46:05 -07:00

at91_udc.c

Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial

2010-10-24 13:41:39 -07:00

at91_udc.h

ARM: 6209/3: at91_udc: Add vbus polarity and polling mode

2010-07-18 20:39:10 +01:00

atmel_usba_udc.c

USB: atmel_usba_udc: force vbus_pin at -EINVAL when gpio_request failled

2010-10-22 10:21:47 -07:00

atmel_usba_udc.h

USB: atmel uaba: Adding invert vbus_pin

2010-03-02 14:54:57 -08:00

audio.c

usb gadget: don't save bind callback in struct usb_configuration

2010-10-22 10:21:26 -07:00

cdc2.c

usb gadget: don't save bind callback in struct usb_configuration

2010-10-22 10:21:26 -07:00

ci13xxx_udc.c

usb gadget: don't save bind callback in struct usb_gadget_driver

2010-10-22 10:21:25 -07:00

ci13xxx_udc.h

USB: gadget: MIPS ci13xxx_udc

2009-01-07 09:59:58 -08:00

composite.c

usb gadget: composite: prevent OOPS for non-standard control request

2010-10-22 10:21:37 -07:00

config.c

USB: gadget: __init and __exit tags removed

2010-05-20 13:21:43 -07:00

dbgp.c

usb gadget: don't save bind callback in struct usb_gadget_driver

2010-10-22 10:21:25 -07:00

dummy_hcd.c

usb: gadget: dummy_hcd: Fix error path

2010-10-22 10:22:06 -07:00

epautoconf.c

USB: gadget: __init and __exit tags removed

2010-05-20 13:21:43 -07:00

ether.c

usb gadget: don't save bind callback in struct usb_configuration

2010-10-22 10:21:26 -07:00

f_acm.c

USB: Change acm_iad_descriptor bFunctionProtocol to USB_CDC_ACM_PROTO_AT_V25TER

2010-10-22 10:21:35 -07:00

f_audio.c

drivers/usb: Remove unnecessary return's from void functions

2010-08-10 14:25:42 +02:00

f_ecm.c

USB: gadget: __init and __exit tags removed

2010-05-20 13:21:43 -07:00

f_eem.c

USB: gadget eth: Fix calculate CRC32 in EEM

2010-06-30 08:16:06 -07:00

f_fs.c

convert get_sb_single() users

2010-10-29 04:16:28 -04:00

f_hid.c

Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial

2010-10-24 13:41:39 -07:00

f_loopback.c

usb gadget: don't save bind callback in struct usb_configuration

2010-10-22 10:21:26 -07:00

f_mass_storage.c

USB: gadget: storage: reuse definitions from scsi.h header file

2010-10-22 10:22:07 -07:00

f_obex.c

include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h

2010-03-30 22:02:32 +09:00

f_phonet.c

include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h

2010-03-30 22:02:32 +09:00

f_rndis.c

USB: gadget: __init and __exit tags removed

2010-05-20 13:21:43 -07:00

f_serial.c

include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h

2010-03-30 22:02:32 +09:00

f_sourcesink.c

usb gadget: don't save bind callback in struct usb_configuration

2010-10-22 10:21:26 -07:00

f_subset.c

include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h

2010-03-30 22:02:32 +09:00

f_uvc.c

V4L/DVB: uvc: Move constants and structures definitions to linux/usb/video.h

2010-08-02 16:43:15 -03:00

f_uvc.h

V4L/DVB: uvc: Move constants and structures definitions to linux/usb/video.h

2010-08-02 16:43:15 -03:00

file_storage.c

USB: gadget: storage: reuse definitions from scsi.h header file

2010-10-22 10:22:07 -07:00

fsl_mxc_udc.c

mxc_udc: add workaround for ENGcm09152 for i.MX35

2010-10-22 10:22:17 -07:00

fsl_qe_udc.c

usb gadget: don't save bind callback in struct usb_gadget_driver

2010-10-22 10:21:25 -07:00

fsl_qe_udc.h

powerpc/qe&cpm: Implement static inline stubs for non-QE/CPM builds

2009-11-11 21:43:20 -06:00

fsl_udc_core.c

Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial

2010-10-24 13:41:39 -07:00

fsl_usb2_udc.h

USB: gadget: Add i.MX3x support to the fsl_usb2_udc driver

2009-06-15 21:44:47 -07:00

g_ffs.c

usb gadget: don't save bind callback in struct usb_configuration

2010-10-22 10:21:26 -07:00

g_zero.h

USB: gadget: gadget zero uses new suspend/resume hooks

2009-03-24 16:20:45 -07:00

gadget_chips.h

USB: gadget: add gadget controller number for s3c-hsotg driver

2010-03-19 07:24:22 -07:00

gmidi.c

usb gadget: don't save bind callback in struct usb_gadget_driver

2010-10-22 10:21:25 -07:00

goku_udc.c

usb: gadget: goku_udc: Fix error path

2010-10-22 10:22:04 -07:00

goku_udc.h

usb: gadget: goku_udc: add registered flag bit, fixing build

2010-11-11 06:57:24 -08:00

hid.c

usb gadget: don't save bind callback in struct usb_configuration

2010-10-22 10:21:26 -07:00

imx_udc.c

usb gadget: don't save bind callback in struct usb_gadget_driver

2010-10-22 10:21:25 -07:00

imx_udc.h

USB: imx_udc: Fix IMX UDC gadget general irq handling

2009-03-24 16:20:29 -07:00

inode.c

convert get_sb_single() users

2010-10-29 04:16:28 -04:00

Kconfig

USB: Fix FSL USB driver on non Open Firmware systems

2010-11-11 06:55:35 -08:00

langwell_udc.c

usb: langwell_udc: cancel pending requests when controller is suspended.

2010-10-22 10:22:00 -07:00

langwell_udc.h

USB: langwell: USB Client driver memory handling

2010-10-22 10:21:19 -07:00

lh7a40x_udc.c

usb gadget: don't save bind callback in struct usb_gadget_driver

2010-10-22 10:21:25 -07:00

lh7a40x_udc.h

[ARM] Move include/asm-arm/arch-* to arch/arm/*/include/mach

2008-08-07 09:55:48 +01:00

m66592-udc.c

usb gadget: don't save bind callback in struct usb_gadget_driver

2010-10-22 10:21:25 -07:00

m66592-udc.h

usb: gadget: m66592-udc pio to mmio accessor conversion.

2010-06-02 16:26:13 +09:00

Makefile

usb: makefile cleanup

2010-10-22 10:22:07 -07:00

mass_storage.c

usb gadget: don't save bind callback in struct usb_configuration

2010-10-22 10:21:26 -07:00

multi.c

usb gadget: don't save bind callback in struct usb_configuration

2010-10-22 10:21:26 -07:00

ndis.h

usb gadget: RNDIS cleanups

2008-07-21 15:16:10 -07:00

net2280.c

usb gadget: don't save bind callback in struct usb_gadget_driver

2010-10-22 10:21:25 -07:00

net2280.h

USB: gadget: net2280: implement set_wedge

2008-10-17 14:40:52 -07:00

nokia.c

usb gadget: don't save bind callback in struct usb_configuration

2010-10-22 10:21:26 -07:00

omap_udc.c

Merge branch 'omap-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap-2.6

2010-10-25 13:46:56 -07:00

omap_udc.h

Rename WARN() to WARNING() to clear the namespace

2008-07-25 10:53:29 -07:00

printer.c

Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6

2010-10-22 20:30:48 -07:00

pxa25x_udc.c

usb gadget: don't save bind callback in struct usb_gadget_driver

2010-10-22 10:21:25 -07:00

pxa25x_udc.h

USB: gadget: pxa25x: basic transceiver support

2009-09-23 06:46:23 -07:00

pxa27x_udc.c

Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial

2010-10-24 13:41:39 -07:00

pxa27x_udc.h

USB: pxa27x_udc: use four bits to store endpoint addresses

2010-05-20 13:21:36 -07:00

r8a66597-udc.c

usb: r8a66597-udc: Add processing when USB was removed.

2010-10-22 10:22:18 -07:00

r8a66597-udc.h

USB: r8a66597-udc: Initialize uninitialized variable, fix compile warning

2010-10-22 10:21:34 -07:00

rndis.c

Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial

2010-10-24 13:41:39 -07:00

rndis.h

USB: rndis: section mismatch fix

2010-09-03 17:33:40 -07:00

s3c2410_udc.c

usb gadget: don't save bind callback in struct usb_gadget_driver

2010-10-22 10:21:25 -07:00

s3c2410_udc.h

USB Gadget driver for Samsung s3c2410 ARM SoC

2007-07-12 16:34:30 -07:00

s3c-hsotg.c

usb gadget: don't save bind callback in struct usb_gadget_driver

2010-10-22 10:21:25 -07:00

serial.c

usb gadget: don't save bind callback in struct usb_configuration

2010-10-22 10:21:26 -07:00

storage_common.c

USB: gadget: storage: reuse definitions from scsi.h header file

2010-10-22 10:22:07 -07:00

u_audio.c

include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h

2010-03-30 22:02:32 +09:00

u_audio.h

USB: audio gadget: free alsa devices when unloading

2009-12-23 11:34:20 -08:00

u_ether.c

USB: gadget: fix ethernet gadget crash in gether_setup

2010-11-01 09:33:53 -07:00

u_ether.h

USB: Remove unsupported usb gadget drivers

2010-03-02 14:54:57 -08:00

u_phonet.h

Phonet: USB CDC Phonet function for gadget framework

2008-12-17 15:49:09 -08:00

u_serial.c

usb: subtle increased memory usage in u_serial

2010-11-11 07:03:48 -08:00

u_serial.h

usb gadget: cdc obex glue

2008-10-17 14:40:53 -07:00

usbstring.c

USB: Gadget: fix UTF conversion in the usbstring library

2009-05-08 19:34:56 -07:00

uvc_queue.c

V4L/DVB: uvc: Fix multiple symbols definitions with UVC gadget and host drivers

2010-07-11 17:45:10 -03:00

uvc_queue.h

V4L/DVB: uvc: Fix multiple symbols definitions with UVC gadget and host drivers

2010-07-11 17:45:10 -03:00

uvc_v4l2.c

USB: uvc_v4l2: cleanup test for end of loop

2010-08-23 20:50:14 -07:00

uvc_video.c

V4L/DVB: uvc: Fix multiple symbols definitions with UVC gadget and host drivers

2010-07-11 17:45:10 -03:00

uvc.h

V4L/DVB: uvc: Move constants and structures definitions to linux/usb/video.h

2010-08-02 16:43:15 -03:00

webcam.c

usb gadget: don't save bind callback in struct usb_configuration

2010-10-22 10:21:26 -07:00

zero.c

usb gadget: don't save bind callback in struct usb_composite_driver

2010-10-22 10:21:25 -07:00