linux-kernel - [PATCH] char: misc: increase DYNAMIC

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Message-Id: <20201029062855.19757-1-sangmoon.kim@samsung.com>
Date:   Thu, 29 Oct 2020 15:28:55 +0900
From:   Sangmoon Kim <sangmoon.kim@...sung.com>
To:     arnd@...db.de, gregkh@...uxfoundation.org
Cc:     linux-kernel@...r.kernel.org,
        Sangmoon Kim <sangmoon.kim@...sung.com>
Subject: [PATCH] char: misc: increase DYNAMIC_MINORS value

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@...sung.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