Hi,
On Tue, Dec 18 2012, Konstantin Dorfman wrote:
>>>> @@ -1374,6 +1367,8 @@ static int mmc_blk_issue_rw_rq(struct mmc_queue *mq,
>>>> struct request *rqc)
>>>> mmc_queue_bounce_post(mq_rq);
>>>>
>>>> switch (status) {
>>>> + case MMC_BLK_NEW_REQUEST:
>>>> + BUG(); /* should never get here */
>> Is there any case to reach here?
>> I didn't find it.
>>
> Correct. But since there is no "default:" in this switch, compiler
> demands all values of the 'status' variable present. So, we need this
> BUG() here or we need to introduce "default:".
Please avoid using BUG() entirely (both here and elsewhere). It crashes
the entire MMC stack, which means it crashes the machine entirely if
you're booted from eMMC/SD. There is almost always something better
that can be done than crashing the machine.
default: and pr_err() sound fine here.
Thanks,
- Chris.
--
Chris Ball <[email protected]> <http://printf.net/>
One Laptop Per Child
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