RE: [PATCH] altera-stapl: remove the unreached switch case

From: David Laight
Date: Fri Nov 13 2020 - 06:21:13 EST


From: xiakaixu1987@xxxxxxxxx
> Sent: 13 November 2020 09:21
> From: Kaixu Xia <kaixuxia@xxxxxxxxxxx>
>
> The value of the variable status must be one of the 0, -EIO and -EILSEQ, so
> the switch cases -ENODATA and default are unreached. Remove them.
>
> Reported-by: Tosk Robot <tencent_os_robot@xxxxxxxxxxx>
> Signed-off-by: Kaixu Xia <kaixuxia@xxxxxxxxxxx>
> ---
> drivers/misc/altera-stapl/altera.c | 9 ---------
> 1 file changed, 9 deletions(-)
>
> diff --git a/drivers/misc/altera-stapl/altera.c b/drivers/misc/altera-stapl/altera.c
> index 5bdf574..8ad1e9e 100644
> --- a/drivers/misc/altera-stapl/altera.c
> +++ b/drivers/misc/altera-stapl/altera.c
> @@ -2265,19 +2265,10 @@ static int altera_check_crc(u8 *p, s32 program_size)
> "actual %04x\n", __func__, local_expected,
> local_actual);
> break;
> - case -ENODATA:
> - printk(KERN_ERR "%s: expected CRC not found, "
> - "actual CRC = %04x\n", __func__,
> - local_actual);
> - break;
> case -EIO:
> printk(KERN_ERR "%s: error: format isn't "
> "recognized.\n", __func__);
> break;
> - default:
> - printk(KERN_ERR "%s: CRC function returned error "
> - "code %d\n", __func__, status);
> - break;

You ought to leave a 'default' in there.
Even if it is just the same as -EIO.

David

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