* [PATCH v2 0/4] clk drivers: Terminate clk_div_table with sentinel element
@ 2022-02-03 14:21 Jonathan Neuschäfer
2022-02-03 14:21 ` [PATCH v2 1/4] clk: actions: " Jonathan Neuschäfer
` (3 more replies)
0 siblings, 4 replies; 7+ messages in thread
From: Jonathan Neuschäfer @ 2022-02-03 14:21 UTC (permalink / raw)
To: linux-clk
Cc: linux-kernel, linux-arm-kernel, linux-mips, Jonathan Neuschäfer
I noticed that some of the clk_div_tables in different drivers are not
terminated with a sentinel element. This may cause the code in
clk-divider.c to read garbage that happens to be beyond the end.
This patchset fixed all instances of this bug that I could find, except
for a case in drivers/phy/ti/phy-j721e-wiz.c that is already fixed in
linux-next:
https://lore.kernel.org/lkml/20220117110108.4117-1-kishon@ti.com/
v2:
- Add Fixes tags
Jonathan Neuschäfer (4):
clk: actions: Terminate clk_div_table with sentinel element
clk: loongson1: Terminate clk_div_table with sentinel element
clk: hisilicon: Terminate clk_div_table with sentinel element
clk: clps711x: Terminate clk_div_table with sentinel element
drivers/clk/actions/owl-s700.c | 1 +
drivers/clk/actions/owl-s900.c | 4 ++--
drivers/clk/clk-clps711x.c | 2 ++
drivers/clk/hisilicon/clk-hi3559a.c | 4 ++--
drivers/clk/loongson1/clk-loongson1c.c | 1 +
5 files changed, 8 insertions(+), 4 deletions(-)
--
2.34.1
^ permalink raw reply [flat|nested] 7+ messages in thread
* [PATCH v2 1/4] clk: actions: Terminate clk_div_table with sentinel element
2022-02-03 14:21 [PATCH v2 0/4] clk drivers: Terminate clk_div_table with sentinel element Jonathan Neuschäfer
@ 2022-02-03 14:21 ` Jonathan Neuschäfer
2022-02-03 16:12 ` Manivannan Sadhasivam
2022-02-03 14:21 ` [PATCH v2 2/4] clk: loongson1: " Jonathan Neuschäfer
` (2 subsequent siblings)
3 siblings, 1 reply; 7+ messages in thread
From: Jonathan Neuschäfer @ 2022-02-03 14:21 UTC (permalink / raw)
To: linux-clk
Cc: linux-kernel, linux-arm-kernel, linux-mips,
Jonathan Neuschäfer, Michael Turquette, Stephen Boyd,
Andreas Färber, Manivannan Sadhasivam, Saravanan Sekar,
Parthiban Nallathambi, linux-actions
In order that the end of a clk_div_table can be detected, it must be
terminated with a sentinel element (.div = 0).
Fixes: d47317ca4ade1 ("clk: actions: Add S700 SoC clock support")
Fixes: d85d20053e195 ("clk: actions: Add S900 SoC clock support")
Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net>
---
I'm not so sure about usb3_mac_div_table. Maybe the { 0, 8 } element was
meant to be { 0, 0 }? I'd appreciate if someone with access to the
datasheet or hardware could verify what's correct.
v2:
- Add Fixes tags
---
drivers/clk/actions/owl-s700.c | 1 +
drivers/clk/actions/owl-s900.c | 4 ++--
2 files changed, 3 insertions(+), 2 deletions(-)
diff --git a/drivers/clk/actions/owl-s700.c b/drivers/clk/actions/owl-s700.c
index a2f34d13fb543..617174644f728 100644
--- a/drivers/clk/actions/owl-s700.c
+++ b/drivers/clk/actions/owl-s700.c
@@ -162,6 +162,7 @@ static struct clk_div_table hdmia_div_table[] = {
static struct clk_div_table rmii_div_table[] = {
{0, 4}, {1, 10},
+ {0, 0},
};
/* divider clocks */
diff --git a/drivers/clk/actions/owl-s900.c b/drivers/clk/actions/owl-s900.c
index 790890978424a..f6f49100a865b 100644
--- a/drivers/clk/actions/owl-s900.c
+++ b/drivers/clk/actions/owl-s900.c
@@ -139,8 +139,8 @@ static struct clk_div_table rmii_ref_div_table[] = {
};
static struct clk_div_table usb3_mac_div_table[] = {
- { 1, 2 }, { 2, 3 }, { 3, 4 },
- { 0, 8 },
+ { 1, 2 }, { 2, 3 }, { 3, 4 }, { 0, 8 },
+ { 0, 0 },
};
static struct clk_div_table i2s_div_table[] = {
--
2.34.1
^ permalink raw reply related [flat|nested] 7+ messages in thread
* [PATCH v2 2/4] clk: loongson1: Terminate clk_div_table with sentinel element
2022-02-03 14:21 [PATCH v2 0/4] clk drivers: Terminate clk_div_table with sentinel element Jonathan Neuschäfer
2022-02-03 14:21 ` [PATCH v2 1/4] clk: actions: " Jonathan Neuschäfer
@ 2022-02-03 14:21 ` Jonathan Neuschäfer
2022-02-03 14:21 ` [PATCH v2 3/4] clk: hisilicon: " Jonathan Neuschäfer
2022-02-03 14:21 ` [PATCH v2 4/4] clk: clps711x: " Jonathan Neuschäfer
3 siblings, 0 replies; 7+ messages in thread
From: Jonathan Neuschäfer @ 2022-02-03 14:21 UTC (permalink / raw)
To: linux-clk
Cc: linux-kernel, linux-arm-kernel, linux-mips,
Jonathan Neuschäfer, Philippe Mathieu-Daudé,
Keguang Zhang, Michael Turquette, Stephen Boyd, Yang Ling
In order that the end of a clk_div_table can be detected, it must be
terminated with a sentinel element (.div = 0).
Fixes: b4626a7f4892 ("CLK: Add Loongson1C clock support")
Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
---
v2:
- Add Fixes and R-b tags
- Change sentinel element a bit
---
drivers/clk/loongson1/clk-loongson1c.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/clk/loongson1/clk-loongson1c.c b/drivers/clk/loongson1/clk-loongson1c.c
index 703f87622cf5f..a6f9f20fc8b99 100644
--- a/drivers/clk/loongson1/clk-loongson1c.c
+++ b/drivers/clk/loongson1/clk-loongson1c.c
@@ -37,6 +37,7 @@ static const struct clk_div_table ahb_div_table[] = {
[1] = { .val = 1, .div = 4 },
[2] = { .val = 2, .div = 3 },
[3] = { .val = 3, .div = 3 },
+ [4] = { /* sentinel */ },
};
void __init ls1x_clk_init(void)
--
2.34.1
^ permalink raw reply related [flat|nested] 7+ messages in thread
* [PATCH v2 3/4] clk: hisilicon: Terminate clk_div_table with sentinel element
2022-02-03 14:21 [PATCH v2 0/4] clk drivers: Terminate clk_div_table with sentinel element Jonathan Neuschäfer
2022-02-03 14:21 ` [PATCH v2 1/4] clk: actions: " Jonathan Neuschäfer
2022-02-03 14:21 ` [PATCH v2 2/4] clk: loongson1: " Jonathan Neuschäfer
@ 2022-02-03 14:21 ` Jonathan Neuschäfer
2022-02-03 14:21 ` [PATCH v2 4/4] clk: clps711x: " Jonathan Neuschäfer
3 siblings, 0 replies; 7+ messages in thread
From: Jonathan Neuschäfer @ 2022-02-03 14:21 UTC (permalink / raw)
To: linux-clk
Cc: linux-kernel, linux-arm-kernel, linux-mips,
Jonathan Neuschäfer, Michael Turquette, Stephen Boyd,
Dongjiu Geng
In order that the end of a clk_div_table can be detected, it must be
terminated with a sentinel element (.div = 0).
Fixes: 6c81966107dc0 ("clk: hisilicon: Add clock driver for hi3559A SoC")
Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net>
---
v2:
- Add Fixes tag
---
drivers/clk/hisilicon/clk-hi3559a.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/clk/hisilicon/clk-hi3559a.c b/drivers/clk/hisilicon/clk-hi3559a.c
index 56012a3d02192..28c2a0630474d 100644
--- a/drivers/clk/hisilicon/clk-hi3559a.c
+++ b/drivers/clk/hisilicon/clk-hi3559a.c
@@ -611,8 +611,8 @@ static struct hisi_mux_clock hi3559av100_shub_mux_clks[] = {
/* shub div clk */
-static struct clk_div_table shub_spi_clk_table[] = {{0, 8}, {1, 4}, {2, 2}};
-static struct clk_div_table shub_uart_div_clk_table[] = {{1, 8}, {2, 4}};
+static struct clk_div_table shub_spi_clk_table[] = {{0, 8}, {1, 4}, {2, 2}, {}};
+static struct clk_div_table shub_uart_div_clk_table[] = {{1, 8}, {2, 4}, {}};
static struct hisi_divider_clock hi3559av100_shub_div_clks[] = {
{ HI3559AV100_SHUB_SPI_SOURCE_CLK, "clk_spi_clk", "shub_clk", 0, 0x20, 24, 2,
--
2.34.1
^ permalink raw reply related [flat|nested] 7+ messages in thread
* [PATCH v2 4/4] clk: clps711x: Terminate clk_div_table with sentinel element
2022-02-03 14:21 [PATCH v2 0/4] clk drivers: Terminate clk_div_table with sentinel element Jonathan Neuschäfer
` (2 preceding siblings ...)
2022-02-03 14:21 ` [PATCH v2 3/4] clk: hisilicon: " Jonathan Neuschäfer
@ 2022-02-03 14:21 ` Jonathan Neuschäfer
3 siblings, 0 replies; 7+ messages in thread
From: Jonathan Neuschäfer @ 2022-02-03 14:21 UTC (permalink / raw)
To: linux-clk
Cc: linux-kernel, linux-arm-kernel, linux-mips,
Jonathan Neuschäfer, Michael Turquette, Stephen Boyd,
Alexander Shiyan, Mike Turquette, Arnd Bergmann
In order that the end of a clk_div_table can be detected, it must be
terminated with a sentinel element (.div = 0).
Fixes: 631c53478973d ("clk: Add CLPS711X clk driver")
Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net>
---
v2:
- Add Fixes tag
---
drivers/clk/clk-clps711x.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/clk/clk-clps711x.c b/drivers/clk/clk-clps711x.c
index a2c6486ef1708..d96d96c8752c7 100644
--- a/drivers/clk/clk-clps711x.c
+++ b/drivers/clk/clk-clps711x.c
@@ -28,11 +28,13 @@ static const struct clk_div_table spi_div_table[] = {
{ .val = 1, .div = 8, },
{ .val = 2, .div = 2, },
{ .val = 3, .div = 1, },
+ {}
};
static const struct clk_div_table timer_div_table[] = {
{ .val = 0, .div = 256, },
{ .val = 1, .div = 1, },
+ {}
};
struct clps711x_clk {
--
2.34.1
^ permalink raw reply related [flat|nested] 7+ messages in thread
* Re: [PATCH v2 1/4] clk: actions: Terminate clk_div_table with sentinel element
2022-02-03 14:21 ` [PATCH v2 1/4] clk: actions: " Jonathan Neuschäfer
@ 2022-02-03 16:12 ` Manivannan Sadhasivam
2022-02-04 23:57 ` Jonathan Neuschäfer
0 siblings, 1 reply; 7+ messages in thread
From: Manivannan Sadhasivam @ 2022-02-03 16:12 UTC (permalink / raw)
To: Jonathan Neuschäfer
Cc: linux-clk, linux-kernel, linux-arm-kernel, linux-mips,
Michael Turquette, Stephen Boyd, Andreas Färber,
Saravanan Sekar, Parthiban Nallathambi, linux-actions
On Thu, Feb 03, 2022 at 03:21:50PM +0100, Jonathan Neuschäfer wrote:
> In order that the end of a clk_div_table can be detected, it must be
> terminated with a sentinel element (.div = 0).
>
> Fixes: d47317ca4ade1 ("clk: actions: Add S700 SoC clock support")
> Fixes: d85d20053e195 ("clk: actions: Add S900 SoC clock support")
> Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net>
> ---
>
> I'm not so sure about usb3_mac_div_table. Maybe the { 0, 8 } element was
> meant to be { 0, 0 }? I'd appreciate if someone with access to the
> datasheet or hardware could verify what's correct.
USB3 factor table is not documented in the datasheet I have access to. But by
looking at the value, it looks to be a typo. So please change the last entry.
With that,
Reviewed-by: Manivannan Sadhasivam <mani@kernel.org>
Thanks,
Mani
>
> v2:
> - Add Fixes tags
> ---
> drivers/clk/actions/owl-s700.c | 1 +
> drivers/clk/actions/owl-s900.c | 4 ++--
> 2 files changed, 3 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/clk/actions/owl-s700.c b/drivers/clk/actions/owl-s700.c
> index a2f34d13fb543..617174644f728 100644
> --- a/drivers/clk/actions/owl-s700.c
> +++ b/drivers/clk/actions/owl-s700.c
> @@ -162,6 +162,7 @@ static struct clk_div_table hdmia_div_table[] = {
>
> static struct clk_div_table rmii_div_table[] = {
> {0, 4}, {1, 10},
> + {0, 0},
> };
>
> /* divider clocks */
> diff --git a/drivers/clk/actions/owl-s900.c b/drivers/clk/actions/owl-s900.c
> index 790890978424a..f6f49100a865b 100644
> --- a/drivers/clk/actions/owl-s900.c
> +++ b/drivers/clk/actions/owl-s900.c
> @@ -139,8 +139,8 @@ static struct clk_div_table rmii_ref_div_table[] = {
> };
>
> static struct clk_div_table usb3_mac_div_table[] = {
> - { 1, 2 }, { 2, 3 }, { 3, 4 },
> - { 0, 8 },
> + { 1, 2 }, { 2, 3 }, { 3, 4 }, { 0, 8 },
> + { 0, 0 },
> };
>
> static struct clk_div_table i2s_div_table[] = {
> --
> 2.34.1
>
^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: [PATCH v2 1/4] clk: actions: Terminate clk_div_table with sentinel element
2022-02-03 16:12 ` Manivannan Sadhasivam
@ 2022-02-04 23:57 ` Jonathan Neuschäfer
0 siblings, 0 replies; 7+ messages in thread
From: Jonathan Neuschäfer @ 2022-02-04 23:57 UTC (permalink / raw)
To: Manivannan Sadhasivam
Cc: Jonathan Neuschäfer, linux-clk, linux-kernel,
linux-arm-kernel, linux-mips, Michael Turquette, Stephen Boyd,
Andreas Färber, Saravanan Sekar, Parthiban Nallathambi,
linux-actions
[-- Attachment #1: Type: text/plain, Size: 979 bytes --]
On Thu, Feb 03, 2022 at 09:42:10PM +0530, Manivannan Sadhasivam wrote:
> On Thu, Feb 03, 2022 at 03:21:50PM +0100, Jonathan Neuschäfer wrote:
> > In order that the end of a clk_div_table can be detected, it must be
> > terminated with a sentinel element (.div = 0).
> >
> > Fixes: d47317ca4ade1 ("clk: actions: Add S700 SoC clock support")
> > Fixes: d85d20053e195 ("clk: actions: Add S900 SoC clock support")
> > Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net>
> > ---
> >
> > I'm not so sure about usb3_mac_div_table. Maybe the { 0, 8 } element was
> > meant to be { 0, 0 }? I'd appreciate if someone with access to the
> > datasheet or hardware could verify what's correct.
>
> USB3 factor table is not documented in the datasheet I have access to. But by
> looking at the value, it looks to be a typo. So please change the last entry.
Okay.
> With that,
>
> Reviewed-by: Manivannan Sadhasivam <mani@kernel.org>
Thanks!
Jonathan
[-- Attachment #2: signature.asc --]
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^ permalink raw reply [flat|nested] 7+ messages in thread
end of thread, other threads:[~2022-02-04 23:57 UTC | newest]
Thread overview: 7+ messages (download: mbox.gz / follow: Atom feed)
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2022-02-03 14:21 [PATCH v2 0/4] clk drivers: Terminate clk_div_table with sentinel element Jonathan Neuschäfer
2022-02-03 14:21 ` [PATCH v2 1/4] clk: actions: " Jonathan Neuschäfer
2022-02-03 16:12 ` Manivannan Sadhasivam
2022-02-04 23:57 ` Jonathan Neuschäfer
2022-02-03 14:21 ` [PATCH v2 2/4] clk: loongson1: " Jonathan Neuschäfer
2022-02-03 14:21 ` [PATCH v2 3/4] clk: hisilicon: " Jonathan Neuschäfer
2022-02-03 14:21 ` [PATCH v2 4/4] clk: clps711x: " Jonathan Neuschäfer
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