linux-kernel - Re: [PATCH 1/3] staging: qlge: Remove multi-line dereferences from qlge

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Message-ID: <0dcf9712a49968da1935061de130bc3668e63088.camel@perches.com>
Date:   Tue, 28 Apr 2020 21:31:10 -0700
From:   Joe Perches <joe@...ches.com>
To:     Rylan Dmello <mail@...an.coffee>,
        Manish Chopra <manishc@...vell.com>,
        GR-Linux-NIC-Dev@...vell.com,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        netdev@...r.kernel.org, devel@...verdev.osuosl.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/3] staging: qlge: Remove multi-line dereferences from
 qlge_main.c

On Wed, 2020-04-29 at 00:04 -0400, Rylan Dmello wrote:
> Fix checkpatch.pl warnings:
> 
>   WARNING: Avoid multiple line dereference - prefer 'qdev->func'
>   WARNING: Avoid multiple line dereference - prefer 'qdev->flags'

Assuming you are doing this for exercise:

It'd be better to unindent all the switch/case
blocks for the entire function so more functions
fit on single lines

	switch (foo) {
	case bar:
		{
			...;

should be:

	switch (foo) {
	case bar: {
		...;

goto exit; might as well be break; and remove
the exit label too.

> Signed-off-by: Rylan Dmello <mail@...an.coffee>
> ---
>  drivers/staging/qlge/qlge_main.c | 9 ++++-----
>  1 file changed, 4 insertions(+), 5 deletions(-)
> 
> diff --git a/drivers/staging/qlge/qlge_main.c b/drivers/staging/qlge/qlge_main.c
> index d7e4dfafc1a3..10daae025790 100644
> --- a/drivers/staging/qlge/qlge_main.c
> +++ b/drivers/staging/qlge/qlge_main.c
> @@ -396,8 +396,7 @@ static int ql_set_mac_addr_reg(struct ql_adapter *qdev, u8 *addr, u32 type,
>  			 * the route field to NIC core.
>  			 */
>  			cam_output = (CAM_OUT_ROUTE_NIC |
> -				      (qdev->
> -				       func << CAM_OUT_FUNC_SHIFT) |
> +				      (qdev->func << CAM_OUT_FUNC_SHIFT) |
>  					(0 << CAM_OUT_CQ_ID_SHIFT));
>  			if (qdev->ndev->features & NETIF_F_HW_VLAN_CTAG_RX)
>  				cam_output |= CAM_OUT_RV;
> @@ -3432,9 +3431,9 @@ static int ql_request_irq(struct ql_adapter *qdev)
>  				     &qdev->rx_ring[0]);
>  			status =
>  			    request_irq(pdev->irq, qlge_isr,
> -					test_bit(QL_MSI_ENABLED,
> -						 &qdev->
> -						 flags) ? 0 : IRQF_SHARED,
> +					test_bit(QL_MSI_ENABLED, &qdev->flags)
> +						? 0
> +						: IRQF_SHARED,
>  					intr_context->name, &qdev->rx_ring[0]);
>  			if (status)
>  				goto err_irq;