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linux-6.5.y
linux/drivers/watchdog
History
Darren Hart 0e094322aa sbsa_gwdt: Calculate timeout with 64-bit math 
commit 5d6aa89bba upstream.

Commit abd3ac7902 ("watchdog: sbsa: Support architecture version 1")
introduced new timer math for watchdog revision 1 with the 48 bit offset
register.

The gwdt->clk and timeout are u32, but the argument being calculated is
u64. Without a cast, the compiler performs u32 operations, truncating
intermediate steps, resulting in incorrect values.

A watchdog revision 1 implementation with a gwdt->clk of 1GHz and a
timeout of 600s writes 3647256576 to the one shot watchdog instead of
300000000000, resulting in the watchdog firing in 3.6s instead of 600s.

Force u64 math by casting the first argument (gwdt->clk) as a u64. Make
the order of operations explicit with parenthesis.

Fixes: abd3ac7902 ("watchdog: sbsa: Support architecture version 1")
Reported-by: Vanshidhar Konda <vanshikonda@os.amperecomputing.com>
Signed-off-by: Darren Hart <darren@os.amperecomputing.com>
Cc: Wim Van Sebroeck <wim@linux-watchdog.org>
Cc: Guenter Roeck <linux@roeck-us.net>
Cc: linux-watchdog@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Cc: linux-arm-kernel@lists.infradead.org
Cc: <stable@vger.kernel.org> # 5.14.x
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/7d1713c5ffab19b0f3de796d82df19e8b1f340de.1695286124.git.darren@os.amperecomputing.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-11-28 17:15:12 +00:00
..
acquirewdt.c watchdog: acquirewdt: Convert to platform remove callback returning void 2023-04-22 12:53:40 +02:00
advantech_ec_wdt.c watchdog: Add Advantech EC watchdog driver 2022-11-19 15:30:37 +01:00
advantechwdt.c watchdog: advantechwdt: Convert to platform remove callback returning void 2023-04-22 12:53:40 +02:00
alim1535_wdt.c watchdog: Use fallthrough pseudo-keyword 2020-08-05 18:42:53 +02:00
alim7101_wdt.c watchdog: Use fallthrough pseudo-keyword 2020-08-05 18:42:53 +02:00
apple_wdt.c watchdog: apple: Use devm_clk_get_enabled() helper 2023-02-12 15:32:53 +01:00
ar7_wdt.c watchdog: ar7: Convert to platform remove callback returning void 2023-04-22 12:53:41 +02:00
arm_smc_wdt.c
armada_37xx_wdt.c watchdog: armada_37xx: Use devm_clk_get_enabled() helper 2023-02-12 15:32:52 +01:00
asm9260_wdt.c
aspeed_wdt.c watchdog: aspeed: Drop of_match_ptr for ID table 2023-04-22 12:53:59 +02:00
at91rm9200_wdt.c watchdog: at91rm9200: Convert to platform remove callback returning void 2023-04-22 12:53:41 +02:00
at91sam9_wdt.c watchdog: at91sam9_wdt: use devm_request_irq to avoid missing free_irq() in error path 2023-02-18 15:11:35 +01:00
at91sam9_wdt.h
ath79_wdt.c watchdog: ath79: Convert to platform remove callback returning void 2023-04-22 12:53:42 +02:00
bcm47xx_wdt.c watchdog: bcm47xx: Simplify using devm_watchdog_register_device() 2023-04-22 12:53:54 +02:00
bcm2835_wdt.c watchdog: bcm2835: Convert to platform remove callback returning void 2023-04-22 12:53:42 +02:00
bcm7038_wdt.c watchdog: bcm7038: Use devm_clk_get_enabled() helper 2023-02-12 15:32:51 +01:00
bcm_kona_wdt.c watchdog: bcm_kona: Convert to platform remove callback returning void 2023-04-22 12:53:43 +02:00
bd9576_wdt.c watchdog: bd9576_wdt: switch to using devm_fwnode_gpiod_get() 2022-10-02 12:55:30 +02:00
booke_wdt.c watchdog: booke_wdt: Replace PPC_FSL_BOOK3E by PPC_E500 2022-09-26 23:00:13 +10:00
cadence_wdt.c watchdog: cadence: Use devm_clk_get_enabled() helper 2023-02-12 15:32:49 +01:00
cpu5wdt.c module: remove never implemented MODULE_SUPPORTED_DEVICE 2021-03-17 13:16:18 -07:00
cpwd.c watchdog: cpwd: Convert to platform remove callback returning void 2023-04-22 12:53:43 +02:00
da9052_wdt.c
da9055_wdt.c
da9062_wdt.c watchdog: da9062: da9063: use unlocked xfer function in restart 2023-02-18 15:11:30 +01:00
da9063_wdt.c watchdog: da9062: da9063: use unlocked xfer function in restart 2023-02-18 15:11:30 +01:00
davinci_wdt.c watchdog: davinci: Use devm_clk_get_enabled() helper 2023-02-12 15:32:50 +01:00
db8500_wdt.c watchdog: at91rm9200: Remove #ifdef guards for PM related functions 2022-11-19 15:30:38 +01:00
diag288_wdt.c watchdog: diag288_wdt: unify lpar and zvm diag288 helpers 2023-02-06 15:14:10 +01:00
digicolor_wdt.c
dw_wdt.c watchdog: dw_wdt: Simplify clk management 2023-04-29 08:08:41 +02:00
ebc-c384_wdt.c
ep93xx_wdt.c watchdog: Convert GPL 2.0 notice to SPDX identifier 2023-06-26 14:30:04 +02:00
eurotechwdt.c watchdog: eurotechwdt: Remove redundant word in comments 2022-10-02 12:55:38 +02:00
exar_wdt.c drivers: watchdog: exar_wdt.c fix use after free 2022-10-19 19:49:47 +02:00
f71808e_wdt.c watchdog: f71808e_wdt: Add check for platform_driver_register 2022-07-23 14:18:46 +02:00
ftwdt010_wdt.c watchdog: ftwdt010_wdt: fix test for platform_get_irq() failure 2022-10-02 12:55:36 +02:00
gef_wdt.c watchdog: gef: Convert to platform remove callback returning void 2023-04-22 12:53:44 +02:00
geodewdt.c watchdog: geodewdt: Convert to platform remove callback returning void 2023-04-22 12:53:44 +02:00
gpio_wdt.c
gxp-wdt.c watchdog: gxp: Add missing MODULE_LICENSE 2022-06-09 12:20:34 +02:00
hpwdt.c watchdog/hpwdt: Include nmi.h only if CONFIG_HPWDT_NMI_DECODING 2022-10-02 12:55:32 +02:00
i6300esb.c
ib700wdt.c watchdog: ib700wdt: Convert to platform remove callback returning void 2023-04-22 12:53:45 +02:00
ibmasr.c watchdog: ibmasr: Replace GPL license notice with SPDX identifier 2023-06-26 14:30:05 +02:00
ie6xx_wdt.c watchdog: ie6xx: Convert to platform remove callback returning void 2023-04-22 12:53:46 +02:00
imgpdc_wdt.c watchdog: imgpdc: Use devm_clk_get_enabled() helper 2023-02-12 15:32:48 +01:00
imx2_wdt.c watchdog: imx2_wdg: Declare local symbols static 2023-04-22 12:53:37 +02:00
imx7ulp_wdt.c watchdog: imx7ulp: Use devm_clk_get_enabled() helper 2023-02-12 15:32:50 +01:00
imx_sc_wdt.c watchdog: imx_sc_wdt: fix pretimeout 2021-06-21 08:49:14 +02:00
indydog.c
intel-mid_wdt.c watchdog: intel-mid_wdt: add MODULE_ALIAS() to allow auto-load 2023-09-19 12:30:15 +02:00
it87_wdt.c watchdog: it87_wdt: remove useless function 2021-06-21 08:49:04 +02:00
it8712f_wdt.c watchdog: it8712f_wdt: remove definition of DEBUG 2021-02-07 14:41:18 +01:00
iTCO_vendor_support.c
iTCO_vendor.h
iTCO_wdt.c watchdog: iTCO_wdt: Report firmware_version 2023-02-18 15:11:31 +01:00
ixp4xx_wdt.c watchdog: ixp4xx: Make sure restart always works 2023-11-20 11:57:21 +01:00
jz4740_wdt.c watchdog: jz4740: Fix return value check in jz4740_wdt_probe() 2021-06-21 08:49:11 +02:00
Kconfig watchdog: advantech_ec_wdt: fix Kconfig dependencies 2023-09-19 12:30:21 +02:00
keembay_wdt.c watchdog: keembay: Typo corrections and other blank operations 2021-06-21 08:48:57 +02:00
kempld_wdt.c watchdog: kempld: Remove #ifdef guards for PM related functions 2022-11-19 15:30:39 +01:00
lantiq_wdt.c
loongson1_wdt.c watchdog: loongson1_wdt: Add DT support 2023-06-26 14:30:04 +02:00
lpc18xx_wdt.c watchdog: lpc18xx: Convert to platform remove callback returning void 2023-04-22 12:53:46 +02:00
m54xx_wdt.c watchdog: Convert GPL 2.0 notice to SPDX identifier 2023-06-26 14:30:04 +02:00
machzwd.c watchdog: Fix fall-through warnings for Clang 2021-05-17 18:56:23 -05:00
Makefile watchdog: xilinx_wwdt: Add Versal window watchdog support 2023-06-26 14:30:06 +02:00
max63xx_wdt.c watchdog: Convert GPL 2.0 notice to SPDX identifier 2023-06-26 14:30:04 +02:00
max77620_wdt.c watchdog: max77620: update Luca Ceresoli's e-mail address 2022-07-23 14:21:23 +02:00
mei_wdt.c mei: fix kdoc in the driver 2021-06-22 12:40:31 +02:00
mena21_wdt.c
menf21bmc_wdt.c
menz69_wdt.c watchdog: menz069_wdt: fix timeout setting 2023-04-22 16:05:39 +02:00
meson_gxbb_wdt.c watchdog: meson_gxbb: Use devm_clk_get_enabled() helper 2023-02-12 15:32:49 +01:00
meson_wdt.c watchdog: meson_wdt: Use device_get_match_data() helper 2021-06-21 08:49:05 +02:00
mixcomwd.c
mlx_wdt.c watchdog: mlx-wdt: Use regmap_write_bits() 2021-10-26 21:31:10 +02:00
moxart_wdt.c watchdog: Convert GPL 2.0 notice to SPDX identifier 2023-06-26 14:30:04 +02:00
mpc8xxx_wdt.c watchdog: mpc8xxx_wdt: Constify static struct watchdog_ops 2021-08-22 10:28:10 +02:00
msc313e_wdt.c watchdog: msc313e: Check if the WDT was running at boot 2022-01-05 10:38:51 +01:00
mt7621_wdt.c watchdog: mt7621-wdt: avoid ralink architecture dependent code 2023-03-02 06:51:29 +01:00
mtk_wdt.c watchdog: mtk_wdt: Add reset_by_toprgu support 2023-02-12 15:32:45 +01:00
mtx-1_wdt.c watchdog: mtx-1: Convert to platform remove callback returning void 2023-04-22 12:53:47 +02:00
ni903x_wdt.c ACPI: make remove callback of ACPI driver void 2022-11-23 19:11:22 +01:00
nic7018_wdt.c watchdog: nic7018: Convert to platform remove callback returning void 2023-04-22 12:53:47 +02:00
npcm_wdt.c watchdog: npcm: Enable clock if provided 2022-10-02 12:55:41 +02:00
nv_tco.c watchdog: nv_tco: Convert to platform remove callback returning void 2023-04-22 12:53:47 +02:00
nv_tco.h watchdog: Replace HTTP links with HTTPS ones 2020-08-05 18:43:01 +02:00
octeon-wdt-main.c linux-watchdog 5.14-rc1 tag 2021-07-07 12:57:46 -07:00
octeon-wdt-nmi.S watchdog: Convert GPL 2.0 notice to SPDX identifier 2023-06-26 14:30:04 +02:00
of_xilinx_wdt.c watchdog: of_xilinx_wdt: Use devm_clk_get_enabled() helper 2023-02-12 15:32:48 +01:00
omap_wdt.c watchdog: omap: Convert to platform remove callback returning void 2023-04-22 12:53:48 +02:00
omap_wdt.h
orion_wdt.c watchdog: Convert GPL 2.0 notice to SPDX identifier 2023-06-26 14:30:04 +02:00
pc87413_wdt.c watchdog:Fix typo in comment 2022-07-23 14:21:28 +02:00
pcwd_pci.c watchdog: Use fallthrough pseudo-keyword 2020-08-05 18:42:53 +02:00
pcwd_usb.c watchdog: pcwd_usb: Fix attempting to access uninitialized memory 2023-02-18 15:11:39 +01:00
pcwd.c isa: Make the remove callback for isa drivers return void 2021-01-26 07:42:27 +01:00
pic32-dmt.c watchdog: pic32-dmt: Use devm_clk_get_enabled() helper 2023-02-12 15:32:47 +01:00
pic32-wdt.c watchdog: pic32-wdt: Use devm_clk_get_enabled() helper 2023-02-12 15:32:47 +01:00
pika_wdt.c
pm8916_wdt.c watchdog: pm8916_wdt: Handle watchdog enabled by bootloader 2022-07-23 14:21:28 +02:00
pnx4008_wdt.c watchdog: pnx4008: Use devm_clk_get_enabled() helper 2023-02-12 15:32:46 +01:00
pretimeout_noop.c
pretimeout_panic.c
pseries-wdt.c watchdog/pseries-wdt: initial support for H_WATCHDOG-based watchdog timers 2022-07-20 21:57:39 +10:00
qcom-wdt.c watchdog: qcom: Use devm_clk_get_enabled() helper 2023-02-12 15:32:52 +01:00
rave-sp-wdt.c
rc32434_wdt.c watchdog: rc32434: Convert to platform remove callback returning void 2023-04-22 12:53:48 +02:00
rdc321x_wdt.c watchdog: rdc321x: Convert to platform remove callback returning void 2023-04-22 12:53:49 +02:00
realtek_otto_wdt.c watchdog: realtek_otto: Use devm_clk_get_enabled() helper 2023-02-12 15:32:46 +01:00
renesas_wdt.c watchdog: renesas: Convert to platform remove callback returning void 2023-04-22 12:53:50 +02:00
retu_wdt.c watchdog: retu_wdt: Clean-up by using managed work init 2021-03-23 15:22:40 +01:00
riowd.c watchdog: riowd: Convert to platform remove callback returning void 2023-04-22 12:53:50 +02:00
rn5t618_wdt.c watchdog: rn5t618: Simplify using devm_watchdog_register_device() 2023-04-22 12:53:54 +02:00
rt2880_wdt.c watchdog: rt2880-wdt: prefer unsigned int over unsigned 2023-04-22 12:53:57 +02:00
rtd119x_wdt.c watchdog: Convert GPL 2.0 notice to SPDX identifier 2023-06-26 14:30:04 +02:00
rti_wdt.c watchdog: rti: Convert to platform remove callback returning void 2023-04-22 12:53:51 +02:00
rza_wdt.c watchdog: rza_wdt: Use semicolons instead of commas 2021-10-26 21:31:10 +02:00
rzg2l_wdt.c watchdog: rzg2l_wdt: Handle TYPE-B reset for RZ/V2M 2023-02-18 15:11:34 +01:00
rzn1_wdt.c watchdog: rzn1: Use devm_clk_get_enabled() helper 2023-02-12 15:32:52 +01:00
s3c2410_wdt.c watchdog: s3c2410: remove unused freq_to_wdt and s3c2410wdt_is_running functions 2023-04-22 12:53:59 +02:00
sa1100_wdt.c watchdog: sa1100: Convert to platform remove callback returning void 2023-04-22 12:53:51 +02:00
sama5d4_wdt.c watchdog: sama5d4_wdt: Remove #ifdef guards for PM related functions 2022-07-23 14:21:26 +02:00
sb_wdog.c watchdog: Use fallthrough pseudo-keyword 2020-08-05 18:42:53 +02:00
sbc60xxwdt.c watchdog: Fix possible use-after-free in wdt_startup() 2021-06-21 08:48:59 +02:00
sbc7240_wdt.c watchdog: Use fallthrough pseudo-keyword 2020-08-05 18:42:53 +02:00
sbc8360.c
sbc_epx_c3.c
sbc_fitpc2_wdt.c watchdog: Convert GPL 2.0 notice to SPDX identifier 2023-06-26 14:30:04 +02:00
sbsa_gwdt.c sbsa_gwdt: Calculate timeout with 64-bit math 2023-11-28 17:15:12 +00:00
sc520_wdt.c watchdog: sc520_wdt: Fix possible use-after-free in wdt_turnoff() 2021-06-21 08:49:02 +02:00
sc1200wdt.c treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
sch311x_wdt.c watchdog: sch311x: Convert to platform remove callback returning void 2023-04-22 12:53:52 +02:00
scx200_wdt.c watchdog: scx200_wdt: Use fallthrough pseudo-keyword 2020-08-05 18:42:54 +02:00
shwdt.c watchdog: shwdt: Convert to platform remove callback returning void 2023-04-22 12:53:52 +02:00
simatic-ipc-wdt.c watchdog: simatic-ipc-wdt: convert to use P2SB accessor 2022-07-14 10:50:36 +01:00
sl28cpld_wdt.c watchdog: sl28cpld_wdt: Constify static struct watchdog_ops 2021-08-22 10:28:09 +02:00
smsc37b787_wdt.c watchdog: Use fallthrough pseudo-keyword 2020-08-05 18:42:53 +02:00
softdog.c watchdog: softdog: Add options 'soft_reboot_cmd' and 'soft_active_on_boot' 2020-08-05 18:43:02 +02:00
sp805_wdt.c watchdog: sp805_wdt: fix spelling typo in comment 2022-10-19 19:49:46 +02:00
sp5100_tco.c watchdog: sp5100_tco: support Hygon FCH/SCH (Server Controller Hub) 2023-06-26 14:30:07 +02:00
sp5100_tco.h Watchdog: sp5100_tco: Enable Family 17h+ CPUs 2022-03-27 17:04:33 +02:00
sprd_wdt.c watchdog: sprd: change to use usleep_range() instead of busy loop 2020-12-13 16:17:39 +01:00
st_lpc_wdt.c watchdog: st_lpc: Convert to platform remove callback returning void 2023-04-22 12:53:53 +02:00
starfive-wdt.c watchdog: starfive: Fix the warning of starfive_wdt_match 2023-04-29 08:08:41 +02:00
stm32_iwdg.c watchdog: stm32_iwdg: drop superfluous error message 2021-10-26 21:31:02 +02:00
stmp3xxx_rtc_wdt.c watchdog: stmp3xxx_rtc: Convert to platform remove callback returning void 2023-04-22 12:53:53 +02:00
stpmic1_wdt.c
sun4v_wdt.c
sunplus_wdt.c watchdog: Add watchdog driver for Sunplus SP7021 2022-05-08 10:34:05 +02:00
sunxi_wdt.c watchdog: sunxi_wdt: Add support for D1 2021-10-26 21:31:08 +02:00
tegra_wdt.c watchdog: tegra_wdt: Remove #ifdef guards for PM related functions 2022-07-23 14:21:27 +02:00
tqmx86_wdt.c watchdog: tqmx86: Constify static struct watchdog_ops 2021-08-22 10:28:10 +02:00
ts72xx_wdt.c watchdog: Convert GPL 2.0 notice to SPDX identifier 2023-06-26 14:30:04 +02:00
ts4800_wdt.c watchdog: Convert GPL 2.0 notice to SPDX identifier 2023-06-26 14:30:04 +02:00
twl4030_wdt.c watchdog: twl4030: Remove #ifdef guards for PM related functions 2022-11-19 15:30:38 +01:00
txx9wdt.c
uniphier_wdt.c
via_wdt.c
visconti_wdt.c watchdog: visconti: Use devm_clk_get_enabled() helper 2023-02-12 15:32:53 +01:00
w83627hf_wdt.c watchdog: w83627hf_wdt: add bootstatus support 2022-10-02 12:55:34 +02:00
w83877f_wdt.c watchdog: Fix possible use-after-free by calling del_timer_sync() 2021-06-21 08:49:03 +02:00
w83977f_wdt.c watchdog: w83977f_wdt: Fix comment typo 2022-10-02 12:55:39 +02:00
wafer5823wdt.c watchdog: Use fallthrough pseudo-keyword 2020-08-05 18:42:53 +02:00
watchdog_core.c watchdog: core: Always set WDOG_HW_RUNNING when starting watchdog 2023-04-22 12:53:38 +02:00
watchdog_core.h watchdog: Add hrtimer-based pretimeout feature 2021-06-21 08:49:13 +02:00
watchdog_dev.c linux-watchdog 6.4-rc1 tag 2023-05-04 18:33:56 -07:00
watchdog_hrtimer_pretimeout.c watchdog: Add hrtimer-based pretimeout feature 2021-06-21 08:49:13 +02:00
watchdog_pretimeout.c watchdog: avoid usage of iterator after loop 2023-04-22 12:54:00 +02:00
watchdog_pretimeout.h
wd501p.h
wdat_wdt.c watchdog: wdat_wdt: Avoid unimplemented get_timeleft 2023-02-12 15:32:53 +01:00
wdrtas.c treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
wdt285.c ARM: footbridge: remove CATS 2023-01-10 23:10:27 +01:00
wdt977.c watchdog: Use fallthrough pseudo-keyword 2020-08-05 18:42:53 +02:00
wdt_pci.c watchdog: fix syntactic kernel-doc issues 2021-06-21 08:49:09 +02:00
wdt.c watchdog: fix syntactic kernel-doc issues 2021-06-21 08:49:09 +02:00
wm831x_wdt.c
wm8350_wdt.c watchdog: wm8350: Simplify using devm_watchdog_register_device() 2023-04-22 12:53:55 +02:00
xen_wdt.c
xilinx_wwdt.c watchdog: xilinx_wwdt: Add Versal window watchdog support 2023-06-26 14:30:06 +02:00
ziirave_wdt.c watchdog: ziirave_wdt: Switch i2c driver back to use .probe() 2023-06-26 14:30:05 +02:00