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168e6f62e4
linux-next/drivers/misc
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Damien Le Moal 168e6f62e4 misc: pci_endpoint_test: Do not write status in IRQ handler 
pci_endpoint_test_irqhandler() always rewrites the status register when an
IRQ is raised, either as-is if STATUS_IRQ_RAISED is not set, or with
STATUS_IRQ_RAISED cleared if that flag is set. The first case creates a
race window with the endpoint side, meaning that the host side test driver
may end up reading what it just wrote, thus losing the real status as set
by the endpoint side before raising the next interrupt.  This can prevent
detecting that the STATUS_IRQ_RAISED flag was set by the endpoint.

Remove this race window by not clearing the STATUS_IRQ_RAISED status flag
and not rewriting that register for every IRQ received.

Link: https://lore.kernel.org/r/20230415023542.77601-17-dlemoal@kernel.org
Signed-off-by: Damien Le Moal <dlemoal@kernel.org>
Signed-off-by: Lorenzo Pieralisi <lpieralisi@kernel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Manivannan Sadhasivam <mani@kernel.org>
2023-06-23 15:03:53 -05:00
..
altera-stapl misc: move from strlcpy with unused retval to strscpy 2022-09-01 16:29:42 +02:00
bcm-vk misc: bcm_vk: Remove usage of deprecated functions 2022-09-01 16:29:32 +02:00
c2port driver core: class: remove module * from class_create() 2023-03-17 15:16:33 +01:00
cardreader misc: alcor_pci: remove unused alcor functions 2023-03-29 12:20:32 +02:00
cb710 cb710: avoid NULL pointer subtraction 2021-10-05 15:50:05 +02:00
cxl driver core: class: remove module * from class_create() 2023-03-17 15:16:33 +01:00
echo
eeprom eeprom: idt_89hpesx: Fix error handling in idt_init() 2023-01-20 12:05:26 +01:00
genwqe - Nick Piggin's "shoot lazy tlbs" series, to improve the peformance of 2023-04-27 19:42:02 -07:00
ibmasm Char / Misc driver updates for 5.14-rc1 2021-07-05 13:42:16 -07:00
lis3lv02d misc: lis3lv02d: Fix reading 'st,default-rate' property 2023-03-17 15:23:32 +01:00
lkdtm lkdtm/stackleak: Fix noinstr violation 2023-04-14 16:08:26 +02:00
mchp_pci1xxxx misc: microchip: pci1xxxx: Convert to immutable irqchip 2023-03-09 18:07:29 +01:00
mei Char/Misc drivers for 6.4-rc1 2023-04-27 12:07:50 -07:00
ocxl driver core: class: remove module * from class_create() 2023-03-17 15:16:33 +01:00
pvpanic misc/pvpanic: Convert regular spinlock into trylock on panic path 2022-04-29 16:54:59 +02:00
sgi-gru Char/Misc and other driver subsystem changes for 6.3-rc1 2023-02-24 12:47:33 -08:00
sgi-xp sgi-xp: simplify sysctl registration 2023-03-09 17:32:13 +01:00
ti-st drivers: misc: ti-st: Fix a typo ("unknow") 2023-01-31 13:02:46 +01:00
uacce driver core: class: remove module * from class_create() 2023-03-17 15:16:33 +01:00
vmw_vmci Char/Misc drivers for 6.4-rc1 2023-04-27 12:07:50 -07:00
ad525x_dpot-i2c.c misc: ad525x_dpot-i2c: Convert to i2c's .probe_new() 2023-03-09 21:58:45 +01:00
ad525x_dpot-spi.c spi: make remove callback a void function 2022-02-09 13:00:45 +00:00
ad525x_dpot.c misc: ad525x_dpot: Make ad_dpot_remove() return void 2021-10-13 14:35:37 +02:00
ad525x_dpot.h misc: ad525x_dpot: Make ad_dpot_remove() return void 2021-10-13 14:35:37 +02:00
apds990x.c misc: apds990x: Convert to i2c's .probe_new() 2022-11-23 19:56:39 +01:00
apds9802als.c misc: apds9802als: Convert to i2c's .probe_new() 2022-11-23 19:56:39 +01:00
atmel-ssc.c misc: update maintainer email address and description for atmel-ssc 2022-08-03 11:03:03 +02:00
bh1770glc.c misc: bh1770glc: Convert to i2c's .probe_new() 2022-11-23 19:56:39 +01:00
cs5535-mfgpt.c
ds1682.c misc: ds1682: Convert to i2c's .probe_new() 2022-11-23 19:56:39 +01:00
dummy-irq.c
dw-xdata-pcie.c misc: Add Synopsys DesignWare xData IP driver 2021-04-05 13:15:52 +02:00
enclosure.c drivers: remove struct module * setting from struct class 2023-03-17 15:16:27 +01:00
fastrpc.c firmware: qcom_scm: Use fixed width src vm bitmap 2023-03-15 16:52:11 -07:00
gehc-achc.c misc: gehc: Add SPI ID table 2021-10-05 15:47:18 +02:00
hi6421v600-irq.c misc: hi6421-spmi-pmic: Use generic_handle_irq_safe(). 2022-03-02 22:28:50 +01:00
hisi_hikey_usb.c misc: hisi_hikey_usb: change the DT schema 2021-09-14 10:57:31 +02:00
hmc6352.c misc: hmc6352: Convert to i2c's .probe_new() 2022-11-23 19:56:38 +01:00
hpilo.c Char/Misc drivers for 6.4-rc1 2023-04-27 12:07:50 -07:00
hpilo.h misc: hpilo: map iLO shared memory by PCI revision id 2021-06-04 15:28:23 +02:00
ibmvmc.c ibmvmc: don't open-code file_inode() 2022-09-01 17:42:27 -04:00
ibmvmc.h
ics932s401.c misc: ics932s401: Convert to i2c's .probe_new() 2022-11-23 19:56:39 +01:00
isl29003.c misc: isl29003: Use sysfs_emit() to instead of sprintf() 2023-01-31 13:02:46 +01:00
isl29020.c misc: isl29020: Convert to i2c's .probe_new() 2022-11-23 19:56:07 +01:00
Kconfig Char/Misc and other driver subsystem changes for 6.3-rc1 2023-02-24 12:47:33 -08:00
kgdbts.c kgdbts: fix return value of __setup handler 2022-03-18 14:17:56 +01:00
lattice-ecp3-config.c spi: make remove callback a void function 2022-02-09 13:00:45 +00:00
Makefile Char/Misc and other driver subsystem changes for 6.3-rc1 2023-02-24 12:47:33 -08:00
open-dice.c mm: replace vma->vm_flags direct modifications with modifier calls 2023-02-09 16:51:39 -08:00
pch_phub.c
pci_endpoint_test.c misc: pci_endpoint_test: Do not write status in IRQ handler 2023-06-23 15:03:53 -05:00
phantom.c driver core: class: remove module * from class_create() 2023-03-17 15:16:33 +01:00
qcom-coincell.c
smpro-errmon.c misc: smpro-errmon: Add dimm training failure syndrome 2023-03-10 09:47:16 +01:00
smpro-misc.c misc: smpro-misc: Add Ampere's Altra SMpro misc driver 2022-11-10 19:03:03 +01:00
sram-exec.c mm: Introduce set_memory_rox() 2022-12-15 10:37:26 -08:00
sram.c misc/sram: Use of_property_read_bool() for boolean properties 2023-03-17 15:23:25 +01:00
sram.h misc: sram: Improve and simplify clk handling 2023-03-09 17:31:53 +01:00
tifm_7xx1.c misc: tifm: fix possible memory leak in tifm_7xx1_switch_media() 2022-11-23 19:55:26 +01:00
tifm_core.c driver core: make struct bus_type.uevent() take a const * 2023-01-27 13:45:52 +01:00
tsl2550.c misc: tsl2550: Convert to i2c's .probe_new() 2022-11-23 19:56:05 +01:00
vcpu_stall_detector.c misc: Add a mechanism to detect stalls on guest vCPUs 2022-07-14 16:54:17 +02:00
vmw_balloon.c misc: vmw_balloon: fix memory leak with using debugfs_lookup() 2023-02-08 13:24:22 +01:00
xilinx_sdfec.c misc/xilinx_sdfec: Replace kmap() with kmap_local_page() 2022-09-09 10:22:36 +02:00
xilinx_tmr_inject.c drivers: misc: Add Support for TMR Inject IP 2023-01-20 13:10:15 +01:00
xilinx_tmr_manager.c drivers: misc: Add Support for TMR Manager 2023-01-20 13:09:30 +01:00