linux-kernel - Re: [PATCH 3/5] staging: gpib: ni

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Message-ID: <2a172c30-3df6-4f5b-a63a-04d279738b64@ijzerbout.nl>
Date: Fri, 7 Feb 2025 20:46:53 +0100
From: Kees Bakker <kees@...erbout.nl>
To: Gaston Gonzalez <gascoar@...il.com>, linux-staging@...ts.linux.dev
Cc: dpenkler@...il.com, gregkh@...uxfoundation.org, arnd@...db.de,
 dan.carpenter@...cle.com, ajithpv.linux@...il.com, roheetchavan@...il.com,
 niharchaithanya@...il.com, eleanor15x@...il.com, everestkc@...restkc.com.np,
 skhan@...uxfoundation.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 3/5] staging: gpib: ni_usb: remove unused variable

Op 07-02-2025 om 16:04 schreef Gaston Gonzalez:
> Remove unused variable 'adr1_bits' in function 'parse_board_ibrd_readback'
>
> This change removes the following warning:
>
> warning: variable ‘adr1_bits’ set but not used [-Wunused-but-set-variable]
>
> Signed-off-by: Gaston Gonzalez <gascoar@...il.com>
> ---
>   drivers/staging/gpib/ni_usb/ni_usb_gpib.c | 2 --
>   1 file changed, 2 deletions(-)
>
> diff --git a/drivers/staging/gpib/ni_usb/ni_usb_gpib.c b/drivers/staging/gpib/ni_usb/ni_usb_gpib.c
> index d0656dc520f5..b7f221def217 100644
> --- a/drivers/staging/gpib/ni_usb/ni_usb_gpib.c
> +++ b/drivers/staging/gpib/ni_usb/ni_usb_gpib.c
> @@ -427,7 +427,6 @@ static int parse_board_ibrd_readback(const u8 *raw_data, struct ni_usb_status_bl
>   	int i = 0;
>   	int j = 0;
>   	int k;
> -	unsigned int adr1_bits;
>   	int num_data_blocks = 0;
>   	struct ni_usb_status_block register_write_status;
>   	int unexpected = 0;
> @@ -460,7 +459,6 @@ static int parse_board_ibrd_readback(const u8 *raw_data, struct ni_usb_status_bl
>   		pr_err("%s: bug: status->id=%i, != ibrd_status_id\n", __func__, status->id);
>   		return -EIO;
>   	}
> -	adr1_bits = raw_data[i++];
Careful. You're removing the i++ as well.
>   	if (num_data_blocks) {
>   		*actual_bytes_read = (num_data_blocks - 1) * data_block_length + raw_data[i++];
>   	} else {