* [PATCH] char: misc: increase DYNAMIC_MINORS value [not found] <CGME20201029063539epcas1p36375a73634374656654da00cbaf91531@epcas1p3.samsung.com> @ 2020-10-29 6:28 ` Sangmoon Kim 2020-10-29 7:05 ` Greg KH 0 siblings, 1 reply; 2+ messages in thread From: Sangmoon Kim @ 2020-10-29 6:28 UTC (permalink / raw) To: arnd, gregkh; +Cc: linux-kernel, Sangmoon Kim DYNAMIC_MINORS value has been set to 64. Due to this reason, we are facing a module loading fail problem of device driver like below. [ 45.712771] pdic_misc_init - return error : -16 We need to increase this value for registering more misc devices. Signed-off-by: Sangmoon Kim <sangmoon.kim@samsung.com> --- drivers/char/misc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/char/misc.c b/drivers/char/misc.c index f6a147427029..ca5141ed5ef3 100644 --- a/drivers/char/misc.c +++ b/drivers/char/misc.c @@ -60,7 +60,7 @@ static DEFINE_MUTEX(misc_mtx); /* * Assigned numbers, used for dynamic minors */ -#define DYNAMIC_MINORS 64 /* like dynamic majors */ +#define DYNAMIC_MINORS 128 /* like dynamic majors */ static DECLARE_BITMAP(misc_minors, DYNAMIC_MINORS); #ifdef CONFIG_PROC_FS -- 2.17.1 ^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [PATCH] char: misc: increase DYNAMIC_MINORS value 2020-10-29 6:28 ` [PATCH] char: misc: increase DYNAMIC_MINORS value Sangmoon Kim @ 2020-10-29 7:05 ` Greg KH 0 siblings, 0 replies; 2+ messages in thread From: Greg KH @ 2020-10-29 7:05 UTC (permalink / raw) To: Sangmoon Kim; +Cc: arnd, linux-kernel On Thu, Oct 29, 2020 at 03:28:55PM +0900, Sangmoon Kim wrote: > DYNAMIC_MINORS value has been set to 64. > Due to this reason, we are facing a module loading fail problem of > device driver like below. > > [ 45.712771] pdic_misc_init - return error : -16 > > We need to increase this value for registering more misc devices. That's a lot of misc devices, nice to see it used more now :) I'll go queue this up, thanks! greg k-h ^ permalink raw reply [flat|nested] 2+ messages in thread
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[not found] <CGME20201029063539epcas1p36375a73634374656654da00cbaf91531@epcas1p3.samsung.com>
2020-10-29 6:28 ` [PATCH] char: misc: increase DYNAMIC_MINORS value Sangmoon Kim
2020-10-29 7:05 ` Greg KH
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