linux-kernel - Re: [PATCH] scsi: pm8001: clean up structurally dead code when PM8001_USE

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Date:   Fri, 29 Mar 2019 15:59:39 +0530
From:   Mukesh Ojha <mojha@...eaurora.org>
To:     Colin King <colin.king@...onical.com>,
        Jack Wang <jinpu.wang@...fitbricks.com>, lindar_liu@...sh.com,
        "James E . J . Bottomley" <jejb@...ux.ibm.com>,
        "Martin K . Petersen" <martin.petersen@...cle.com>,
        linux-scsi@...r.kernel.org
Cc:     kernel-janitors@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] scsi: pm8001: clean up structurally dead code when
 PM8001_USE_MSIX is defined


On 3/29/2019 5:13 AM, Colin King wrote:
> From: Colin Ian King <colin.king@...onical.com>
>
> When macro PM8001_USE_MSIX is defined there are redundant dead code
> calls to pm8001_chip_intx_interrupt_{enable|disable}. Clean this up
> by compiling in the appropriate enable/disable handlers for the
> defined PM8001_USE_MSIX and undefined PM8001_USE_MSIX cases.
>
> Signed-off-by: Colin Ian King <colin.king@...onical.com>


This looks good.

Reviewed-by: Mukesh Ojha <mojha@...eaurora.org>


Not relevant to this patch but Can you do something about 
pm8001_chip_is_our_interupt() as well ?


Cheers,
-Mukesh
> ---
>   drivers/scsi/pm8001/pm8001_hwi.c | 14 ++++++++------
>   1 file changed, 8 insertions(+), 6 deletions(-)
>
> diff --git a/drivers/scsi/pm8001/pm8001_hwi.c b/drivers/scsi/pm8001/pm8001_hwi.c
> index e4209091c1da..7d81246a432b 100644
> --- a/drivers/scsi/pm8001/pm8001_hwi.c
> +++ b/drivers/scsi/pm8001/pm8001_hwi.c
> @@ -1204,6 +1204,7 @@ void pm8001_chip_iounmap(struct pm8001_hba_info *pm8001_ha)
>   	}
>   }
>   
> +#ifndef PM8001_USE_MSIX
>   /**
>    * pm8001_chip_interrupt_enable - enable PM8001 chip interrupt
>    * @pm8001_ha: our hba card information
> @@ -1225,6 +1226,8 @@ pm8001_chip_intx_interrupt_disable(struct pm8001_hba_info *pm8001_ha)
>   	pm8001_cw32(pm8001_ha, 0, MSGU_ODMR, ODMR_MASK_ALL);
>   }
>   
> +#else
> +
>   /**
>    * pm8001_chip_msix_interrupt_enable - enable PM8001 chip interrupt
>    * @pm8001_ha: our hba card information
> @@ -1256,6 +1259,7 @@ pm8001_chip_msix_interrupt_disable(struct pm8001_hba_info *pm8001_ha,
>   	msi_index += MSIX_TABLE_BASE;
>   	pm8001_cw32(pm8001_ha, 0,  msi_index, MSIX_INTERRUPT_DISABLE);
>   }
> +#endif
>   
>   /**
>    * pm8001_chip_interrupt_enable - enable PM8001 chip interrupt
> @@ -1266,10 +1270,9 @@ pm8001_chip_interrupt_enable(struct pm8001_hba_info *pm8001_ha, u8 vec)
>   {
>   #ifdef PM8001_USE_MSIX
>   	pm8001_chip_msix_interrupt_enable(pm8001_ha, 0);
> -	return;
> -#endif
> +#else
>   	pm8001_chip_intx_interrupt_enable(pm8001_ha);
> -
> +#endif
>   }
>   
>   /**
> @@ -1281,10 +1284,9 @@ pm8001_chip_interrupt_disable(struct pm8001_hba_info *pm8001_ha, u8 vec)
>   {
>   #ifdef PM8001_USE_MSIX
>   	pm8001_chip_msix_interrupt_disable(pm8001_ha, 0);
> -	return;
> -#endif
> +#else
>   	pm8001_chip_intx_interrupt_disable(pm8001_ha);
> -
> +#endif
>   }
>   
>   /**