[PATCH v4 29/32] cxlflash: Fix to double the delay each time

[Daniel Axtens]

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA512

"Matthew R. Ochs" <mrochs at linux.vnet.ibm.com> writes:

> From: Manoj Kumar <manoj at linux.vnet.ibm.com>
>
> The operator used to double the delay is incorrect and
> does not result in delay doubling.
>
> To fix, use a left shift instead of the XOR operator.
>
I can see that the patch is correct, but this commit message is a bit
confusing. What delay? In what circumstances are you doubling it? Why?

Regards,
Daniel

> Reported-by: Tomas Henzl <thenzl at redhat.com>
> Signed-off-by: Matthew R. Ochs <mrochs at linux.vnet.ibm.com>
> Signed-off-by: Manoj N. Kumar <manoj at linux.vnet.ibm.com>
> Reviewed-by: Brian King <brking at linux.vnet.ibm.com>
> ---
>  drivers/scsi/cxlflash/main.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/scsi/cxlflash/main.c b/drivers/scsi/cxlflash/main.c
> index ab11ee6..be78906 100644
> --- a/drivers/scsi/cxlflash/main.c
> +++ b/drivers/scsi/cxlflash/main.c
> @@ -303,7 +303,7 @@ write_rrin:
>  		if (rrin != 0x1)
>  			break;
>  		/* Double delay each time */
> -		udelay(2 ^ nretry);
> +		udelay(2 << nretry);
>  	} while (nretry++ < MC_ROOM_RETRY_CNT);
>  }
>  
> -- 
> 2.1.0
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1
Comment: GPGTools - https://gpgtools.org
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=Km/z
-----END PGP SIGNATURE-----