[PATCH 104/141] mtd: rawnand: stm32_fmc2: Fix fall-through warnings for Clang

Miquel Raynal miquel.raynal at bootlin.com
Mon Nov 23 03:33:47 EST 2020


Hi Gustavo,

"Gustavo A. R. Silva" <gustavoars at kernel.org> wrote on Fri, 20 Nov 2020
12:37:48 -0600:

> In preparation to enable -Wimplicit-fallthrough for Clang, fix a couple
> of warnings by explicitly adding a couple of fallthrough pseudo-keywords
> instead of letting the code fall through to the next case.
> 
> Link: https://github.com/KSPP/linux/issues/115
> Signed-off-by: Gustavo A. R. Silva <gustavoars at kernel.org>
> ---
>  drivers/mtd/nand/raw/stm32_fmc2_nand.c | 2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/drivers/mtd/nand/raw/stm32_fmc2_nand.c b/drivers/mtd/nand/raw/stm32_fmc2_nand.c
> index 550bda4d1415..002fa521036f 100644
> --- a/drivers/mtd/nand/raw/stm32_fmc2_nand.c
> +++ b/drivers/mtd/nand/raw/stm32_fmc2_nand.c
> @@ -531,6 +531,7 @@ static int stm32_fmc2_nfc_ham_correct(struct nand_chip *chip, u8 *dat,
>  		switch (b % 4) {
>  		case 2:
>  			bit_position += shifting;
> +			fallthrough;

In patch 100, 101, 102, 103 you 'break' in this case (when the
statement falls into the empty following statement which itself
breaks). Please make it consistent and use break here, below, and in
patch 132.

LGTM otherwise.

>  		case 1:
>  			break;
>  		default:
> @@ -546,6 +547,7 @@ static int stm32_fmc2_nfc_ham_correct(struct nand_chip *chip, u8 *dat,
>  		switch (b % 4) {
>  		case 2:
>  			byte_addr += shifting;
> +			fallthrough;
>  		case 1:
>  			break;
>  		default:

Thanks,
Miquèl



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