From: Sangmoon Kim <sangmoon.kim@samsung.com>
To: arnd@arndb.de, gregkh@linuxfoundation.org
Cc: linux-kernel@vger.kernel.org, Sangmoon Kim <sangmoon.kim@samsung.com>
Subject: [PATCH] char: misc: increase DYNAMIC_MINORS value
Date: Thu, 29 Oct 2020 15:28:55 +0900 [thread overview]
Message-ID: <20201029062855.19757-1-sangmoon.kim@samsung.com> (raw)
In-Reply-To: CGME20201029063539epcas1p36375a73634374656654da00cbaf91531@epcas1p3.samsung.com
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
next parent reply other threads:[~2020-10-29 9:02 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <CGME20201029063539epcas1p36375a73634374656654da00cbaf91531@epcas1p3.samsung.com>
2020-10-29 6:28 ` Sangmoon Kim [this message]
2020-10-29 7:05 ` [PATCH] char: misc: increase DYNAMIC_MINORS value Greg KH
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