Re: [PATCH 4.19 106/140] iio: ad7949: kill pointless "readback"-handling code

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On Mon, Dec 16, 2019 at 07:45:36PM +0100, Greg Kroah-Hartman wrote:
On Mon, Dec 16, 2019 at 07:31:31PM +0100, Andrea Merello wrote:
Something nasty seems happening here: it looks like the commit message
and the actual diff have nothing to do one wrt the other; the commit
message is from one of my patches, the diff is against some unrelated
file.

Il giorno lun 16 dic 2019 alle ore 19:05 Greg Kroah-Hartman
<gregkh@xxxxxxxxxxxxxxxxxxx> ha scritto:
>
> From: Meng Li <Meng.Li@xxxxxxxxxxxxx>
>
> [ Upstream commit c270bbf7bb9ddc4e2a51b3c56557c377c9ac79bc ]
>
> The device could be configured to spit out also the configuration word
> while reading the AD result value (in the same SPI xfer) - this is called
> "readback" in the device datasheet.
>
> The driver checks if readback is enabled and it eventually adjusts the SPI
> xfer length and it applies proper shifts to still get the data, discarding
> the configuration word.
>
> The readback option is actually never enabled (the driver disables it), so
> the said checks do not serve for any purpose.
>
> Since enabling the readback option seems not to provide any advantage (the
> driver entirely sets the configuration word without relying on any default
> value), just kill the said, unused, code.
>
> Signed-off-by: Andrea Merello <andrea.merello@xxxxxxxxx>
> Reviewed-by: Alexandru Ardelean <alexandru.ardelean@xxxxxxxxxx>
> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@xxxxxxxxxx>
> Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
> ---
>  drivers/edac/altera_edac.c | 1 +
>  1 file changed, 1 insertion(+)
>
> diff --git a/drivers/edac/altera_edac.c b/drivers/edac/altera_edac.c
> index 56de378ad13dc..c9108906bcdc0 100644
> --- a/drivers/edac/altera_edac.c
> +++ b/drivers/edac/altera_edac.c
> @@ -600,6 +600,7 @@ static const struct regmap_config s10_sdram_regmap_cfg = {
>         .reg_read = s10_protected_reg_read,
>         .reg_write = s10_protected_reg_write,
>         .use_single_rw = true,
> +       .fast_io = true,
>  };
>
>  static int altr_s10_sdram_probe(struct platform_device *pdev)
> --
> 2.20.1
>
>
>

Wow, something went wrong.

Sasha, can you look into this?

Yikes, sorry - this is one of the commits that needed to be manually
backported, and I must have copy pasted the wrong commit hash to use as
the commit message.

This really is 56d9e7bd3fa0 ("EDAC/altera: Use fast register IO for S10
IRQs") which needs to be in the stable tree, I'll go fix up the message.

--
Thanks,
Sasha



[Index of Archives]     [Linux Kernel]     [Kernel Development Newbies]     [Linux USB Devel]     [Video for Linux]     [Linux Audio Users]     [Yosemite Hiking]     [Linux Kernel]     [Linux SCSI]

  Powered by Linux