AuxXxilium/linux_dsm_epyc7002
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c7c7e8d780
linux_dsm_epyc7002/drivers/media/usb
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Brad Love c7c7e8d780 media: em28xx: USB bulk packet size fix 
Hauppauge em28xx bulk devices exhibit continuity errors and corrupted
packets, when run in VMWare virtual machines. Unknown if other
manufacturers bulk models exhibit the same issue. KVM/Qemu is unaffected.

According to documentation the maximum packet multiplier for em28xx in bulk
transfer mode is 256 * 188 bytes. This changes the size of bulk transfers
to maximum supported value and have a bonus beneficial alignment.

Before:

After:

This sets up USB to expect just as many bytes as the em28xx is set to emit.

Successful usage under load afterwards natively and in both VMWare
and KVM/Qemu virtual machines.

Signed-off-by: Brad Love <brad@nextdimension.cc>
Reviewed-by: Michael Ira Krufky <mkrufky@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2018-03-06 04:33:22 -05:00
..
airspy media: usb: make video_device const 2017-08-27 08:45:32 -04:00
as102 media: fix usage of whitespaces and on indentation 2018-01-04 13:12:01 -05:00
au0828 Merge commit 'v4.16-rc4~0' into patchwork 2018-03-05 07:39:06 -05:00
b2c2 media: move dvb kAPI headers to include/media 2017-12-28 13:16:01 -05:00
cpia2 vfs: do bulk POLL* -> EPOLL* replacement 2018-02-11 14:34:03 -08:00
cx231xx vfs: do bulk POLL* -> EPOLL* replacement 2018-02-11 14:34:03 -08:00
dvb-usb media: cxusb, dib0700: ignore XC2028_I2C_FLUSH 2018-01-29 07:47:47 -05:00
dvb-usb-v2 media: move dvb kAPI headers to include/media 2017-12-28 13:16:01 -05:00
em28xx media: em28xx: USB bulk packet size fix 2018-03-06 04:33:22 -05:00
go7007 License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
gspca media: gspca: dtcs033: use %*ph to print small buffer 2018-02-26 08:14:47 -05:00
hackrf media: usb: make video_device const 2017-08-27 08:45:32 -04:00
hdpvr vfs: do bulk POLL* -> EPOLL* replacement 2018-02-11 14:34:03 -08:00
msi2500 media: usb: fix spelling mistake: "synchronuously" -> "synchronously" 2017-11-07 03:47:09 -05:00
pulse8-cec media: pulse8-cec: print time using time64_t 2017-12-08 11:08:22 -05:00
pvrusb2 vfs: do bulk POLL* -> EPOLL* replacement 2018-02-11 14:34:03 -08:00
pwc media: replace all <spaces><tab> occurrences 2018-01-04 13:15:05 -05:00
rainshadow-cec media: usb: rainshadow-cec: constify serio_device_id 2017-08-20 08:27:29 -04:00
s2255 media: s2255drv: Remove unneeded if else blocks 2018-02-26 07:57:38 -05:00
siano media: replace all <spaces><tab> occurrences 2018-01-04 13:15:05 -05:00
stk1160 media: replace all <spaces><tab> occurrences 2018-01-04 13:15:05 -05:00
stkwebcam vfs: do bulk POLL* -> EPOLL* replacement 2018-02-11 14:34:03 -08:00
tm6000 vfs: do bulk POLL* -> EPOLL* replacement 2018-02-11 14:34:03 -08:00
ttusb-budget media updates for v4.16-rc1 2018-02-06 11:27:48 -08:00
ttusb-dec media: dvb: update buffer mmaped flags and frame counter 2018-02-23 11:44:08 -05:00
usbtv media: usbtv: Add USB ID 1f71:3306 to the UTV007 driver 2018-02-26 07:42:47 -05:00
usbvision media: don't include drivers/media/i2c at cflags 2017-12-28 14:14:09 -05:00
uvc media: uvcvideo: Fixed ktime_t to ns conversion 2018-02-23 02:24:29 -05:00
zr364xx media: annotate ->poll() instances 2017-11-27 16:20:06 -05:00
Kconfig [media] rainshadow-cec: new RainShadow Tech HDMI CEC driver 2017-04-10 12:42:10 -03:00
Makefile License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00