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Re: [PATCH linux-next v4 5/5] mtd: atmel-quadspi: add driver for Atmel QSPI controller

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On Mon, Aug 24, 2015 at 7:45 PM, Marek Vasut <marex@denx.de> wrote:
> On Monday, August 24, 2015 at 07:04:38 PM, Cyrille Pitchen wrote:
>> Hi Marek,
>
> Hi!
>
>> Le 24/08/2015 13:03, Marek Vasut a écrit :
>> > On Monday, August 24, 2015 at 12:14:00 PM, Cyrille Pitchen wrote:
>> >> This driver add support to the new Atmel QSPI controller embedded into
>> >> sama5d2x SoCs. It expects a NOR memory to be connected to the QSPI
>> >> controller.
>
> [...]
>
>> >> +  /* Compute address parameters */
>> >> +  switch (cmd->enable.bits.address) {
>> >> +  case 4:
>> >> +          ifr |= QSPI_IFR_ADDRL;
>> >> +          /*break;*/ /* fallback to the 24bit address case */
>> >
>> > What's this commented out bit of code for ? :-)
>>
>> I just wanted to stress out there was no missing "break;".
>> I've reworded the comment to:
>> /* No "break" on purpose: fallback to the 24bit address case. */
>
> Oh, the address is in bytes . I see, yes, it makes sense to be more
> explicit here about the purpose of the fallback. I think this change
> in the comment will make it easier for everyone who comes back in a
> few years and reads this code.

I think you are looking for the term "(switch case) fallthrough", not
"fallback". "Fallback" makes it sound like there is something missing,
or an invalid state.


Jonas
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[PATCH linux-next v4 5/5] mtd: atmel-quadspi: add driver for Atmel QSPI controller Cyrille Pitchen <cyrille.pitchen@atmel.com> - 2015-08-24 12:20 +0200
  Re: [PATCH linux-next v4 5/5] mtd: atmel-quadspi: add driver for Atmel QSPI controller Marek Vasut <marex@denx.de> - 2015-08-24 13:10 +0200
    Re: [PATCH linux-next v4 5/5] mtd: atmel-quadspi: add driver for  Atmel QSPI controller Russell King - ARM Linux <linux@arm.linux.org.uk> - 2015-08-24 15:00 +0200
      Re: [PATCH linux-next v4 5/5] mtd: atmel-quadspi: add driver for Atmel QSPI controller Marek Vasut <marex@denx.de> - 2015-08-24 15:20 +0200
    Re: [PATCH linux-next v4 5/5] mtd: atmel-quadspi: add driver for  Atmel QSPI controller Cyrille Pitchen <cyrille.pitchen@atmel.com> - 2015-08-24 19:10 +0200
      Re: [PATCH linux-next v4 5/5] mtd: atmel-quadspi: add driver for Atmel QSPI controller Marek Vasut <marex@denx.de> - 2015-08-24 19:50 +0200
        Re: [PATCH linux-next v4 5/5] mtd: atmel-quadspi: add driver for  Atmel QSPI controller Jonas Gorski <jogo@openwrt.org> - 2015-08-25 11:50 +0200
          Re: [PATCH linux-next v4 5/5] mtd: atmel-quadspi: add driver for  Atmel QSPI controller Cyrille Pitchen <cyrille.pitchen@atmel.com> - 2015-08-25 12:30 +0200
    Re: [PATCH linux-next v4 5/5] mtd: atmel-quadspi: add driver for  Atmel QSPI controller Cyrille Pitchen <cyrille.pitchen@atmel.com> - 2015-08-25 12:20 +0200
      Re: [PATCH linux-next v4 5/5] mtd: atmel-quadspi: add driver for Atmel QSPI controller Marek Vasut <marex@denx.de> - 2015-08-25 12:30 +0200
        Re: [PATCH linux-next v4 5/5] mtd: atmel-quadspi: add driver for  Atmel QSPI controller Brian Norris <computersforpeace@gmail.com> - 2015-08-25 18:00 +0200
  RE: [PATCH linux-next v4 5/5] mtd: atmel-quadspi: add driver for  Atmel QSPI controller Bean Huo 霍斌斌 (beanhuo)   <beanhuo@micron.com> - 2015-08-25 03:50 +0200
    Re: [PATCH linux-next v4 5/5] mtd: atmel-quadspi: add driver for  Atmel QSPI controller Cyrille Pitchen <cyrille.pitchen@atmel.com> - 2015-08-25 13:30 +0200

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