[PATCH v1 1/1] mfd: syscon: Remove repetition of the regmap_get_val_endian()

[PATCH v1 1/1] mfd: syscon: Remove repetition of the regmap_get_val_endian()

[Andy Shevchenko]

Since the commit 0dbdb76c0ca8 ("regmap: mmio: Parse endianness
definitions from DT") regmap MMIO parses DT itsef, no need to
repeat this in the caller(s).

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
---
 drivers/mfd/syscon.c | 8 --------
 1 file changed, 8 deletions(-)

diff --git a/drivers/mfd/syscon.c b/drivers/mfd/syscon.c
index 651cc6f3fd3f..15b74dcb0744 100644
--- a/drivers/mfd/syscon.c
+++ b/drivers/mfd/syscon.c
@@ -66,14 +66,6 @@ static struct syscon *of_syscon_register(struct device_node *np, bool check_clk)
 		goto err_map;
 	}
 
-	/* Parse the device's DT node for an endianness specification */
-	if (of_property_read_bool(np, "big-endian"))
-		syscon_config.val_format_endian = REGMAP_ENDIAN_BIG;
-	else if (of_property_read_bool(np, "little-endian"))
-		syscon_config.val_format_endian = REGMAP_ENDIAN_LITTLE;
-	else if (of_property_read_bool(np, "native-endian"))
-		syscon_config.val_format_endian = REGMAP_ENDIAN_NATIVE;
-
 	/*
 	 * search for reg-io-width property in DT. If it is not provided,
 	 * default to 4 bytes. regmap_init_mmio will return an error if values
-- 
2.35.1

Re: [PATCH v1 1/1] mfd: syscon: Remove repetition of the regmap_get_val_endian()

[Andy Shevchenko]

On Mon, Aug 08, 2022 at 05:08:11PM +0300, Andy Shevchenko wrote:
> Since the commit 0dbdb76c0ca8 ("regmap: mmio: Parse endianness
> definitions from DT") regmap MMIO parses DT itsef, no need to
> repeat this in the caller(s).

Any comment?

-- 
With Best Regards,
Andy Shevchenko

Re: [PATCH v1 1/1] mfd: syscon: Remove repetition of the regmap_get_val_endian()

[Lee Jones]

On Mon, 08 Aug 2022, Andy Shevchenko wrote:

> Since the commit 0dbdb76c0ca8 ("regmap: mmio: Parse endianness
> definitions from DT") regmap MMIO parses DT itsef, no need to
> repeat this in the caller(s).
> 
> Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
> ---
>  drivers/mfd/syscon.c | 8 --------
>  1 file changed, 8 deletions(-)

Applied, thanks.

-- 
Lee Jones [李琼斯]

Re: [PATCH v1 1/1] mfd: syscon: Remove repetition of the regmap_get_val_endian()

[Guenter Roeck]

On Mon, Aug 08, 2022 at 05:08:11PM +0300, Andy Shevchenko wrote:
> Since the commit 0dbdb76c0ca8 ("regmap: mmio: Parse endianness
> definitions from DT") regmap MMIO parses DT itsef, no need to
> repeat this in the caller(s).
> 
> Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>

This patch results in reboot failures for all big endian mips emulations.

Sample log:

Network interface test passed
Boot successful.
Rebooting
reboot: Restarting system
Unable to restart system
Reboot failed -- System halted

The problem is not seen with little endian mips emulations. Reverting
this patch fixes the problem. Bisect log attached.

#regzbot introduced: 72a95859728a
#regzbot title: Reboot failure on big endian mips systems

Guenter

---
# bad: [a6afa4199d3d038fbfdff5511f7523b0e30cb774] Merge tag 'mailbox-v6.1' of git://git.linaro.org/landing-teams/working/fujitsu/integration
# good: [4c86114194e644b6da9107d75910635c9e87179e] Merge tag 'iomap-6.1-merge-1' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux
git bisect start 'HEAD' '4c86114194e6'
# bad: [6181073dd6a7e5deafc60e7981bd765b6c93da8c] Merge tag 'tty-6.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty
git bisect bad 6181073dd6a7e5deafc60e7981bd765b6c93da8c
# bad: [94e8ca6ebd1bc20a193eb552dee4de884a954938] Merge tag 'rproc-v6.1' of git://git.kernel.org/pub/scm/linux/kernel/git/remoteproc/linux
git bisect bad 94e8ca6ebd1bc20a193eb552dee4de884a954938
# good: [9d84bb40bcb30a7fa16f33baa967aeb9953dda78] Merge tag 'drm-next-2022-10-07-1' of git://anongit.freedesktop.org/drm/drm
git bisect good 9d84bb40bcb30a7fa16f33baa967aeb9953dda78
# good: [5d435a3f7b6cb1db566d0f56f5f8dc33be0dde69] Merge tag 'media/v6.1-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media
git bisect good 5d435a3f7b6cb1db566d0f56f5f8dc33be0dde69
# bad: [ae9559594cb851aff774d5bea243b84c6acf761d] Merge tag 'mfd-next-6.1' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd
git bisect bad ae9559594cb851aff774d5bea243b84c6acf761d
# good: [834382ea32865a4bdeae83ec2dcb9321dc9489f2] mfd: da9061: Fix Failed to set Two-Wire Bus Mode.
git bisect good 834382ea32865a4bdeae83ec2dcb9321dc9489f2
# good: [2f5b0059b31a3e554cb8c5a40682411a2f53f4d3] Merge branch 'for-6.1/nintendo' into for-linus
git bisect good 2f5b0059b31a3e554cb8c5a40682411a2f53f4d3
# good: [430257d8329b58170a92364597e474fa607e28b2] Merge branch 'for-6.1/uclogic' into for-linus
git bisect good 430257d8329b58170a92364597e474fa607e28b2
# good: [cb7c02e91c31f55d08760f04a09bf9334d809426] Merge branch 'for-6.1/google' into for-linus
git bisect good cb7c02e91c31f55d08760f04a09bf9334d809426
# good: [02010cf0093629b9eeadade1f2684d85eaa3390f] mfd: ocelot-spi: Add missing MODULE_DEVICE_TABLE
git bisect good 02010cf0093629b9eeadade1f2684d85eaa3390f
# bad: [72a95859728a7866522e6633818bebc1c2519b17] mfd: syscon: Remove repetition of the regmap_get_val_endian()
git bisect bad 72a95859728a7866522e6633818bebc1c2519b17
# first bad commit: [72a95859728a7866522e6633818bebc1c2519b17] mfd: syscon: Remove repetition of the regmap_get_val_endian()

Re: [PATCH v1 1/1] mfd: syscon: Remove repetition of the regmap_get_val_endian()

[Andy Shevchenko]

On Sun, Oct 09, 2022 at 09:39:42AM -0700, Guenter Roeck wrote:
> On Mon, Aug 08, 2022 at 05:08:11PM +0300, Andy Shevchenko wrote:
> > Since the commit 0dbdb76c0ca8 ("regmap: mmio: Parse endianness
> > definitions from DT") regmap MMIO parses DT itsef, no need to
> > repeat this in the caller(s).
> > 
> > Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
> 
> This patch results in reboot failures for all big endian mips emulations.
> 
> Sample log:
> 
> Network interface test passed
> Boot successful.
> Rebooting
> reboot: Restarting system
> Unable to restart system
> Reboot failed -- System halted
> 
> The problem is not seen with little endian mips emulations. Reverting
> this patch fixes the problem. Bisect log attached.
> 
> #regzbot introduced: 72a95859728a
> #regzbot title: Reboot failure on big endian mips systems

Right, Jason sent a revert already, but Linus asked for the proper submission.

-- 
With Best Regards,
Andy Shevchenko

Re: [PATCH v1 1/1] mfd: syscon: Remove repetition of the regmap_get_val_endian()

[Thorsten Leemhuis]

On 09.10.22 18:39, Guenter Roeck wrote:
> On Mon, Aug 08, 2022 at 05:08:11PM +0300, Andy Shevchenko wrote:
>> Since the commit 0dbdb76c0ca8 ("regmap: mmio: Parse endianness
>> definitions from DT") regmap MMIO parses DT itsef, no need to
>> repeat this in the caller(s).
>>
>> Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
> 
> This patch results in reboot failures for all big endian mips emulations.
> 
> Sample log:
> 
> Network interface test passed
> Boot successful.
> Rebooting
> reboot: Restarting system
> Unable to restart system
> Reboot failed -- System halted
> 
> The problem is not seen with little endian mips emulations. Reverting
> this patch fixes the problem. Bisect log attached.
> 
> #regzbot introduced: 72a95859728a
> #regzbot title: Reboot failure on big endian mips systems

#regzbot monitor: https://lore.kernel.org/all/Y0GZwkDwnak2ReTt@zx2c4.com/

Re: [PATCH v1 1/1] mfd: syscon: Remove repetition of the regmap_get_val_endian()

[Jason A. Donenfeld]

On Thu, Sep 29, 2022 at 07:07:39PM +0100, Lee Jones wrote:
> On Mon, 08 Aug 2022, Andy Shevchenko wrote:
> 
> > Since the commit 0dbdb76c0ca8 ("regmap: mmio: Parse endianness
> > definitions from DT") regmap MMIO parses DT itsef, no need to
> > repeat this in the caller(s).
> > 
> > Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
> > ---
> >  drivers/mfd/syscon.c | 8 --------
> >  1 file changed, 8 deletions(-)
> 
> Applied, thanks.

Linus applied this already:
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=ca4582c286aa4465f9d1a72bef34b04ee907d42e

Re: [PATCH v1 1/1] mfd: syscon: Remove repetition of the regmap_get_val_endian()

[Lee Jones]

On Sun, 23 Oct 2022, Jason A. Donenfeld wrote:

> On Thu, Sep 29, 2022 at 07:07:39PM +0100, Lee Jones wrote:
> > On Mon, 08 Aug 2022, Andy Shevchenko wrote:
> > 
> > > Since the commit 0dbdb76c0ca8 ("regmap: mmio: Parse endianness
> > > definitions from DT") regmap MMIO parses DT itsef, no need to
> > > repeat this in the caller(s).
> > > 
> > > Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
> > > ---
> > >  drivers/mfd/syscon.c | 8 --------
> > >  1 file changed, 8 deletions(-)
> > 
> > Applied, thanks.
> 
> Linus applied this already:
> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=ca4582c286aa4465f9d1a72bef34b04ee907d42e

Even better, thanks.

-- 
Lee Jones [李琼斯]

Re: [PATCH v1 1/1] mfd: syscon: Remove repetition of the regmap_get_val_endian()

[Thorsten Leemhuis]

On 23.10.22 17:08, Thorsten Leemhuis wrote:
> On 09.10.22 18:39, Guenter Roeck wrote:
>> On Mon, Aug 08, 2022 at 05:08:11PM +0300, Andy Shevchenko wrote:
>>> Since the commit 0dbdb76c0ca8 ("regmap: mmio: Parse endianness
>>> definitions from DT") regmap MMIO parses DT itsef, no need to
>>> repeat this in the caller(s).
>>>
>>> Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
>>
>> This patch results in reboot failures for all big endian mips emulations.
>>
>> Sample log:
>>
>> Network interface test passed
>> Boot successful.
>> Rebooting
>> reboot: Restarting system
>> Unable to restart system
>> Reboot failed -- System halted
>>
>> The problem is not seen with little endian mips emulations. Reverting
>> this patch fixes the problem. Bisect log attached.
>>
>> #regzbot introduced: 72a95859728a
>> #regzbot title: Reboot failure on big endian mips systems
> 
> #regzbot monitor: https://lore.kernel.org/all/Y0GZwkDwnak2ReTt@zx2c4.com/

#regzbot fixed-by: ca4582c286aa4465