Remi Pommarel d8488a4180 clk: meson: pll: Fix by 0 division in __pll_params_to_rate() ... Some meson pll registers can be initialized with 0 as N value, introducing the following division by 0 when computing rate : UBSAN: Undefined behaviour in drivers/clk/meson/clk-pll.c:75:9 division by zero CPU: 0 PID: 1 Comm: swapper/0 Not tainted 5.4.0-rc3-608075-g86c9af8630e1-dirty #400 Call trace: dump_backtrace+0x0/0x1c0 show_stack+0x14/0x20 dump_stack+0xc4/0x100 ubsan_epilogue+0x14/0x68 __ubsan_handle_divrem_overflow+0x98/0xb8 __pll_params_to_rate+0xdc/0x140 meson_clk_pll_recalc_rate+0x278/0x3a0 __clk_register+0x7c8/0xbb0 devm_clk_hw_register+0x54/0xc0 meson_eeclkc_probe+0xf4/0x1a0 platform_drv_probe+0x54/0xd8 really_probe+0x16c/0x438 driver_probe_device+0xb0/0xf0 device_driver_attach+0x94/0xa0 __driver_attach+0x70/0x108 bus_for_each_dev+0xd8/0x128 driver_attach+0x30/0x40 bus_add_driver+0x1b0/0x2d8 driver_register+0xbc/0x1d0 __platform_driver_register+0x78/0x88 axg_driver_init+0x18/0x20 do_one_initcall+0xc8/0x24c kernel_init_freeable+0x2b0/0x344 kernel_init+0x10/0x128 ret_from_fork+0x10/0x18 This checks if N is null before doing the division. Fixes: 7a29a86943 ("clk: meson: Add support for Meson clock controller") Reviewed-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com> Signed-off-by: Remi Pommarel <repk@triplefau.lt> [jbrunet@baylibre.com: update the comment in above the fix] Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>		2019-12-16 10:58:57 +01:00
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actions	Merge branches 'clk-cdce-regulator', 'clk-bcm', 'clk-evict-parent-cache' and 'clk-actions' into clk-next	2019-09-19 15:31:46 -07:00
analogbits	treewide: Add SPDX license identifier - Makefile/Kconfig	2019-05-21 10:50:46 +02:00
at91	This merge window we have one small clk provider API in the core framework and	2019-12-01 16:06:02 -08:00
axis	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500	2019-06-19 17:09:55 +02:00
axs10x	clk: axs10x: use devm_platform_ioremap_resource() to simplify code	2019-10-16 16:17:50 -07:00
bcm	clk: bcm2835: use devm_platform_ioremap_resource() to simplify code	2019-10-16 16:16:50 -07:00
berlin	treewide: Add SPDX license identifier - Makefile/Kconfig	2019-05-21 10:50:46 +02:00
davinci	clk: davinci: use devm_platform_ioremap_resource() to simplify code	2019-10-16 16:17:14 -07:00
h8300	treewide: Add SPDX license identifier - Makefile/Kconfig	2019-05-21 10:50:46 +02:00
hisilicon	Merge branches 'clk-hisi', 'clk-amlogic', 'clk-samsung', 'clk-renesas' and 'clk-imx' into clk-next	2019-11-27 08:14:17 -08:00
imgtec	drivers/clk: convert VL struct to struct_size	2019-11-08 08:36:12 -08:00
imx	This merge window we have one small clk provider API in the core framework and	2019-12-01 16:06:02 -08:00
ingenic	Merge branches 'clk-ingenic', 'clk-init-leak', 'clk-ux500' and 'clk-bitmain' into clk-next	2019-11-27 08:15:13 -08:00
keystone	This round of clk driver and framework updates is heavy on the driver update	2019-07-17 10:07:48 -07:00
loongson1	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152	2019-05-30 11:26:32 -07:00
mediatek	clk: mediatek: mt6797: use devm_platform_ioremap_resource() to simplify code	2019-10-16 16:17:46 -07:00
meson	clk: meson: pll: Fix by 0 division in __pll_params_to_rate()	2019-12-16 10:58:57 +01:00
microchip	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 445	2019-06-05 17:37:18 +02:00
mmp	ARM: mmp: add support for MMP3 SoC	2019-10-17 16:36:11 +02:00
mvebu	Merge branches 'clk-ti', 'clk-allwinner', 'clk-qcom', 'clk-sa' and 'clk-aspeed' into clk-next	2019-11-27 08:14:38 -08:00
mxs	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 159	2019-05-30 11:26:37 -07:00
nxp	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 159	2019-05-30 11:26:37 -07:00
pistachio	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 422	2019-06-05 17:37:15 +02:00
pxa	clk: pxa: fix one of the pxa RTC clocks	2019-11-13 15:01:17 -08:00
qcom	Merge branch 'thermal/next' of git://git.kernel.org/pub/scm/linux/kernel/git/thermal/linux	2019-12-05 11:21:24 -08:00
renesas	clk: renesas: r8a7796: Add R8A77961 CPG/MSSR support	2019-11-01 13:36:39 +01:00
rockchip	clk: rockchip: protect the pclk_usb_grf as critical on px30	2019-11-05 20:53:42 +01:00
samsung	Merge branches 'clk-ti', 'clk-allwinner', 'clk-qcom', 'clk-sa' and 'clk-aspeed' into clk-next	2019-11-27 08:14:38 -08:00
sifive	A few clk driver fixes	2019-05-30 16:33:37 -07:00
sirf	clk: sirf: Don't reference clk_init_data after registration	2019-08-16 10:20:07 -07:00
socfpga	We have a small collection of core framework updates this time, mostly around	2019-09-20 15:45:07 -07:00
spear	clk: spear: Make structure i2s_sclk_masks constant	2019-09-06 10:27:40 -07:00
sprd	Merge branches 'clk-gpio-flags', 'clk-tegra', 'clk-rockchip', 'clk-sprd' and 'clk-pxa' into clk-next	2019-11-27 08:15:00 -08:00
st	Merge branches 'clk-aspeed', 'clk-unused', 'clk-of-node-put', 'clk-const-bulk-data' and 'clk-debugfs' into clk-next	2019-09-19 15:30:40 -07:00
sunxi	clk: sunxi: Fix operator precedence in sunxi_divs_clk_setup	2019-10-29 08:42:31 +01:00
sunxi-ng	This merge window we have one small clk provider API in the core framework and	2019-12-01 16:06:02 -08:00
tegra	clk: tegra: Use match_string() helper to simplify the code	2019-11-13 15:03:27 -08:00
ti	This merge window we have one small clk provider API in the core framework and	2019-12-01 16:06:02 -08:00
uniphier	drivers/clk: convert VL struct to struct_size	2019-11-08 08:36:12 -08:00
ux500	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 194	2019-05-30 11:29:22 -07:00
versatile	clk: versatile: Add of_node_put() in cm_osc_setup()	2019-08-07 15:25:25 -07:00
x86	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500	2019-06-19 17:09:55 +02:00
zte	clk: zx296718: Don't reference clk_init_data after registration	2019-08-16 10:20:15 -07:00
zynq	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 401	2019-06-05 17:37:13 +02:00
zynqmp	ARM: SoC-related driver updates	2019-05-16 09:19:14 -07:00
clk-asm9260.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 201	2019-05-30 11:29:52 -07:00
clk-aspeed.c	clk: aspeed: Add RMII RCLK gates for both AST2500 MACs	2019-11-26 10:02:48 -08:00
clk-aspeed.h	clk: aspeed: Move structures to header	2019-09-06 15:17:02 -07:00
clk-ast2600.c	This merge window we have one small clk provider API in the core framework and	2019-12-01 16:06:02 -08:00
clk-axi-clkgen.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 177	2019-05-30 11:29:19 -07:00
clk-axm5516.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500	2019-06-19 17:09:55 +02:00
clk-bd718x7.c	clk: bd718x7: Add MODULE_ALIAS()	2019-10-03 10:51:11 -07:00
clk-bm1880.c	clk: Add common clock driver for BM1880 SoC	2019-11-22 15:58:27 -08:00
clk-bulk.c	clk: Make clk_bulk_get_all() return a valid "id"	2019-09-17 13:26:31 -07:00
clk-cdce706.c	This round of clk driver and framework updates is heavy on the driver update	2019-07-17 10:07:48 -07:00
clk-cdce925.c	clk: clk-cdce925: Add regulator support	2019-09-06 10:31:16 -07:00
clk-clps711x.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152	2019-05-30 11:26:32 -07:00
clk-composite.c	clk: Add clk_hw_unregister_composite helper function definition	2019-11-22 15:58:04 -08:00
clk-conf.c
clk-cs2000-cp.c
clk-devres.c	clk: Add devm_clk_bulk_get_optional() function	2019-06-25 14:28:01 -07:00
clk-divider.c	clk: Zero init clk_init_data in helpers	2019-11-22 15:58:04 -08:00
clk-efm32gg.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500	2019-06-19 17:09:55 +02:00
clk-fixed-factor.c	Merge branch 'clk-parent-rewrite-1' into clk-next	2019-05-07 11:46:13 -07:00
clk-fixed-mmio.c	clk: Remove io.h from clk-provider.h	2019-05-15 13:21:37 -07:00
clk-fixed-rate.c	clk: Zero init clk_init_data in helpers	2019-11-22 15:58:04 -08:00
clk-fractional-divider.c	clk: Remove io.h from clk-provider.h	2019-05-15 13:21:37 -07:00
clk-gate.c	clk: Zero init clk_init_data in helpers	2019-11-22 15:58:04 -08:00
clk-gemini.c
clk-gpio.c	clk: clk-gpio: propagate rate change to parent	2019-11-08 13:07:59 -08:00
clk-hi655x.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 288	2019-06-05 17:36:37 +02:00
clk-highbank.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 201	2019-05-30 11:29:52 -07:00
clk-hsdk-pll.c	clk: Remove io.h from clk-provider.h	2019-05-15 13:21:37 -07:00
clk-lochnagar.c	clk: lochnagar: Don't reference clk_init_data after registration	2019-08-16 10:20:07 -07:00
clk-max9485.c
clk-max77686.c	clk: clk-max77686: Clean clkdev lookup leak and use devm	2019-02-06 10:35:03 -08:00
clk-milbeaut.c	clk: milbeaut: Don't reference clk_init_data after registration	2019-08-16 10:20:15 -07:00
clk-moxart.c
clk-multiplier.c	clk: Remove io.h from clk-provider.h	2019-05-15 13:21:37 -07:00
clk-mux.c	clk: Zero init clk_init_data in helpers	2019-11-22 15:58:04 -08:00
clk-nomadik.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 194	2019-05-30 11:29:22 -07:00
clk-npcm7xx.c
clk-nspire.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500	2019-06-19 17:09:55 +02:00
clk-oxnas.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 201	2019-05-30 11:29:52 -07:00
clk-palmas.c
clk-pwm.c	This round of clk driver and framework updates is heavy on the driver update	2019-07-17 10:07:48 -07:00
clk-qoriq.c	clk: qoriq: Fix -Wunused-const-variable	2019-08-07 14:17:49 -07:00
clk-rk808.c	- Core Frameworks	2019-07-15 20:18:40 -07:00
clk-s2mps11.c
clk-scmi.c	firmware: arm_scmi: Drop config flag in clk_ops->rate_set	2019-08-12 12:23:01 +01:00
clk-scpi.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 201	2019-05-30 11:29:52 -07:00
clk-si514.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157	2019-05-30 11:26:37 -07:00
clk-si544.c	clk: clk-si544: Implement small frequency change support	2019-06-27 13:45:38 -07:00
clk-si570.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157	2019-05-30 11:26:37 -07:00
clk-si5341.c	clk: Si5341/Si5340: remove redundant assignment to n_den	2019-08-07 14:23:24 -07:00
clk-si5351.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152	2019-05-30 11:26:32 -07:00
clk-si5351.h	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152	2019-05-30 11:26:32 -07:00
clk-stm32f4.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 201	2019-05-30 11:29:52 -07:00
clk-stm32h7.c
clk-stm32mp1.c	clk: stm32mp1: Add ddrperfm clock	2019-04-29 11:13:23 -07:00
clk-tango4.c
clk-twl6040.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 336	2019-06-05 17:37:07 +02:00
clk-u300.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 194	2019-05-30 11:29:22 -07:00
clk-versaclock5.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157	2019-05-30 11:26:37 -07:00
clk-vt8500.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 282	2019-06-05 17:36:37 +02:00
clk-wm831x.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152	2019-05-30 11:26:32 -07:00
clk-xgene.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156	2019-05-30 11:26:35 -07:00
clk.c	Merge branches 'clk-ingenic', 'clk-init-leak', 'clk-ux500' and 'clk-bitmain' into clk-next	2019-11-27 08:15:13 -08:00
clk.h	clk: consoldiate the __clk_get_hw() declarations	2019-07-12 11:00:14 -07:00
clkdev.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500	2019-06-19 17:09:55 +02:00
Kconfig	ARM: SoC platform updates	2019-12-05 11:38:40 -08:00
Makefile	clk: Add common clock driver for BM1880 SoC	2019-11-22 15:58:27 -08:00