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a50c4c9a65
linux/drivers/staging
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Phil Elwell a50c4c9a65 staging: vchiq: Fix local event signalling 
Prior to the recent event reworking (see Fixes), thread synchronisation
was implemented using completions, the worker thread being woken with
a call to complete(). The replacement uses waitqueues, which are more
like condition variables in that the waiting thread is only woken if
the condition is true.

When the VPU signals the ARM, it first sets the event's fired flag to
indicate which event is being signalled, but the places in the
ARM-side code where the worker thread is being woken -
remote_event_signal_local via request_poll - did not do so as it
wasn't previously necessary, and since the armed flag was being
cleared this lead to a deadlock.

Fixes: 852b2876a8 ("staging: vchiq: rework remove_event handling")
Signed-off-by: Phil Elwell <phil@raspberrypi.org>
Tested-by: Stefan Wahren <stefan.wahren@i2se.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-01-15 16:31:09 +01:00
..
android Staging/IIO driver patches for 4.21-rc1 2018-12-28 20:39:58 -08:00
axis-fifo staging: axis-fifo: Split line to stay in 80 characters. 2018-11-20 10:59:30 +01:00
board
clocking-wizard
comedi Remove 'type' argument from access_ok() function 2019-01-03 18:57:57 -08:00
emxx_udc staging: emxx_udc: Remove cast and move all in one line. 2018-12-05 09:44:10 +01:00
erofs staging: erofs: Fix spelling issue 2018-12-12 11:30:05 +01:00
fbtft staging: fbtft: fix strncmp() size warning 2018-12-19 08:29:28 +01:00
fsl-dpaa2 net: core: dev: Add extack argument to dev_open() 2018-12-06 13:26:06 -08:00
fwserial staging: fwserial: convert to DEFINE_SHOW_ATTRIBUTE 2018-12-17 14:24:07 +01:00
gasket staging: gasket: formatting fixes 2018-11-12 14:43:15 -08:00
gdm724x
goldfish staging: goldfish: Add SPDX license identifier. 2018-11-07 12:27:33 +01:00
greybus staging: greybus: convert to DEFINE_SHOW_ATTRIBUTE 2018-12-17 14:24:42 +01:00
gs_fpgaboot
iio Revert "Staging: iio: adt7316: Add an extra check for 'ret' equals to 0" 2018-12-08 11:15:54 +00:00
ks7010 staging: ks7010: remove unnecessary blank line 2018-11-07 12:35:10 +01:00
media Staging/IIO driver patches for 4.21-rc1 2018-12-28 20:39:58 -08:00
most staging: most: sound: replace snprintf with strscpy 2018-12-19 08:28:22 +01:00
mt7621-dma staging: mt7621-dma: fix unbalanced braces 2018-12-17 14:17:28 +01:00
mt7621-dts staging: mt7621-dts: avoid warnings in pinctrl definitions 2018-12-12 11:55:39 +01:00
mt7621-eth cross-tree: phase out dma_zalloc_coherent() 2019-01-08 07:58:37 -05:00
mt7621-mmc staging: mt7621-mmc: Correct spelling mistakes in comments 2018-12-20 18:11:58 +01:00
mt7621-pci staging: mt7621-pci: add comment clarifying inverted reset lines 2018-12-05 09:39:45 +01:00
mt7621-pinctrl staging: mt7621-pinctrl: fix uninitialized variable ngroups 2018-11-11 11:47:38 -08:00
mt7621-spi staging: mt7621-spi: drop support for SPI mode 1/2/3 2018-12-12 11:34:53 +01:00
netlogic
nvec
octeon Staging/IIO driver patches for 4.21-rc1 2018-12-28 20:39:58 -08:00
octeon-usb staging: octeon-usb: use a helper function to set the DMA mask 2018-12-05 09:47:02 +01:00
olpc_dcon staging: olpc_dcon: olpc_dcon_xo_1.c: Switch to the gpio descriptor interface 2018-11-08 03:59:47 -08:00
pi433 staging: pi433: add missing call to cdev_del() 2018-12-05 09:39:45 +01:00
rtl8188eu staging: rtl8188eu: Fix module loading from tasklet for WEP encryption 2019-01-07 15:27:59 +01:00
rtl8192e Staging/IIO driver patches for 4.21-rc1 2018-12-28 20:39:58 -08:00
rtl8192u Staging/IIO driver patches for 4.21-rc1 2018-12-28 20:39:58 -08:00
rtl8712 Merge 4.20-rc6 into staging-next 2018-12-10 09:23:50 +01:00
rtl8723bs Revert "staging: rtl8723bs: Mark ACPI table declaration as used" 2019-01-11 10:40:13 +01:00
rtlwifi staging: rtlwifi: fix spelling mistake "disnabled" -> "disabled" 2018-12-05 09:39:45 +01:00
rts5208 Staging/IIO driver patches for 4.21-rc1 2018-12-28 20:39:58 -08:00
sm750fb staging: sm750fb: Add spaces around '+' 2018-11-07 12:35:10 +01:00
speakup staging: speakup: change semaphore to completion 2018-12-12 11:31:14 +01:00
unisys Staging/IIO driver patches for 4.21-rc1 2018-12-28 20:39:58 -08:00
vboxvideo Staging/IIO driver patches for 4.21-rc1 2018-12-28 20:39:58 -08:00
vc04_services staging: vchiq: Fix local event signalling 2019-01-15 16:31:09 +01:00
vme
vt6655 cross-tree: phase out dma_zalloc_coherent() 2019-01-08 07:58:37 -05:00
vt6656
wilc1000 Staging: wilc1000: unlock on error in init_chip() 2019-01-15 16:31:09 +01:00
wlan-ng staging: wlan-ng: remove unused variable in prism2fw.c 2018-11-20 10:59:30 +01:00
xgifb staging: xgifb: clean an indentation issue 2018-11-07 12:35:10 +01:00
Kconfig staging: Remove the mt29f_spinand driver 2018-11-06 10:18:48 +01:00
Makefile staging: Remove the mt29f_spinand driver 2018-11-06 10:18:48 +01:00