Re: [PATCH] qla2xxx: Fix setting lower transfer speed if GPSC fails

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On Sun, 2018-06-03 at 22:09 -0700, Himanshu Madhani wrote:
> This patch prevents driver from setting lower default speed
> of 1 GB/sec, if the switch does not support Get Port Speed
> Capabilities (GPSC) command. Setting this default speed results
> into much lower write performance for large sequential WRITE.
> This patch modifies driver to check for gpsc_supported flags and
> prevents driver from issuing MBC_SET_PORT_PARAM (001Ah) to set
> default speed of 1 GB/sec. If driver does not send this mailbox
> command, firmware assumes maximum supported link speed and will
> operate at the max speed.
> 
> Cc: stable@xxxxxxxxxxxxxxx
> Signed-off-by: Himanshu Madhani <himanshu.madhani@xxxxxxxxxx>

Is this a regression? In other words, does this patch need a "Fixes:" tag?

Thanks,

Bart.







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