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Message-ID: <20190731113216.ztxckd54a74g2lw5@M43218.corp.atmel.com>
Date: Wed, 31 Jul 2019 13:32:16 +0200
From: Ludovic Desroches <ludovic.desroches@...rochip.com>
To: "Gustavo A. R. Silva" <gustavo@...eddedor.com>
CC: Ulf Hansson <ulf.hansson@...aro.org>,
Nicolas Ferre <nicolas.ferre@...rochip.com>,
Alexandre Belloni <alexandre.belloni@...tlin.com>,
<linux-mmc@...r.kernel.org>,
<linux-arm-kernel@...ts.infradead.org>,
<linux-kernel@...r.kernel.org>,
Stephen Rothwell <sfr@...b.auug.org.au>,
Kees Cook <keescook@...omium.org>
Subject: Re: [PATCH] mmc: atmel-mci: Mark expected switch fall-throughs
Hi,
On Sun, Jul 28, 2019 at 07:01:23PM -0500, Gustavo A. R. Silva wrote:
>
> Mark switch cases where we are expecting to fall through.
>
> This patch fixes the following warnings:
>
> drivers/mmc/host/atmel-mci.c: In function 'atmci_get_cap':
> drivers/mmc/host/atmel-mci.c:2415:30: warning: this statement may fall through [-Wimplicit-fallthrough=]
> host->caps.has_odd_clk_div = 1;
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~
> drivers/mmc/host/atmel-mci.c:2416:2: note: here
> case 0x400:
> ^~~~
> drivers/mmc/host/atmel-mci.c:2422:28: warning: this statement may fall through [-Wimplicit-fallthrough=]
> host->caps.has_highspeed = 1;
> ~~~~~~~~~~~~~~~~~~~~~~~~~^~~
> drivers/mmc/host/atmel-mci.c:2423:2: note: here
> case 0x200:
> ^~~~
> drivers/mmc/host/atmel-mci.c:2426:40: warning: this statement may fall through [-Wimplicit-fallthrough=]
> host->caps.need_notbusy_for_read_ops = 1;
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~
> drivers/mmc/host/atmel-mci.c:2427:2: note: here
> case 0x100:
> ^~~~
>
> Reported-by: Stephen Rothwell <sfr@...b.auug.org.au>
> Signed-off-by: Gustavo A. R. Silva <gustavo@...eddedor.com>
I don't know if there is a policy in the kernel about the expression to
use. As this one does the job
Acked-by: Ludovic Desroches <ludovic.desroches@...rochip.com>
Thanks
> ---
> drivers/mmc/host/atmel-mci.c | 4 ++++
> 1 file changed, 4 insertions(+)
>
> diff --git a/drivers/mmc/host/atmel-mci.c b/drivers/mmc/host/atmel-mci.c
> index 9ee0bc0ce6d0..c26fbe5f2222 100644
> --- a/drivers/mmc/host/atmel-mci.c
> +++ b/drivers/mmc/host/atmel-mci.c
> @@ -2413,6 +2413,7 @@ static void atmci_get_cap(struct atmel_mci *host)
> case 0x600:
> case 0x500:
> host->caps.has_odd_clk_div = 1;
> + /* Fall through */
> case 0x400:
> case 0x300:
> host->caps.has_dma_conf_reg = 1;
> @@ -2420,13 +2421,16 @@ static void atmci_get_cap(struct atmel_mci *host)
> host->caps.has_cfg_reg = 1;
> host->caps.has_cstor_reg = 1;
> host->caps.has_highspeed = 1;
> + /* Fall through */
> case 0x200:
> host->caps.has_rwproof = 1;
> host->caps.need_blksz_mul_4 = 0;
> host->caps.need_notbusy_for_read_ops = 1;
> + /* Fall through */
> case 0x100:
> host->caps.has_bad_data_ordering = 0;
> host->caps.need_reset_after_xfer = 0;
> + /* Fall through */
> case 0x0:
> break;
> default:
> --
> 2.22.0
>
>
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