All of lore.kernel.org
 help / color / mirror / Atom feed
From: Chengguang Xu <cgxu519@gmx.com>
To: hao.wu@intel.com, atull@kernel.org, mdf@kernel.org
Cc: linux-fpga@vger.kernel.org, Chengguang Xu <cgxu519@gmx.com>
Subject: [PATCH v2] fpga: dfl: expand minor range when registering chrdev region
Date: Thu, 21 Feb 2019 15:46:49 +0800	[thread overview]
Message-ID: <20190221074649.28988-1-cgxu519@gmx.com> (raw)

Actually, total amount of available minor number
for a single major is MINORMASK + 1. So expand
minor range when registering chrdev region.

Signed-off-by: Chengguang Xu <cgxu519@gmx.com>
Acked-by: Wu Hao <hao.wu@intel.com>
---
v1->v2:
- Fix typo in subject.

 drivers/fpga/dfl.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/fpga/dfl.c b/drivers/fpga/dfl.c
index 2c09e502e721..02fff566be46 100644
--- a/drivers/fpga/dfl.c
+++ b/drivers/fpga/dfl.c
@@ -315,7 +315,7 @@ static void dfl_chardev_uinit(void)
 	for (i = 0; i < DFL_FPGA_DEVT_MAX; i++)
 		if (MAJOR(dfl_chrdevs[i].devt)) {
 			unregister_chrdev_region(dfl_chrdevs[i].devt,
-						 MINORMASK);
+						 MINORMASK + 1);
 			dfl_chrdevs[i].devt = MKDEV(0, 0);
 		}
 }
@@ -325,8 +325,8 @@ static int dfl_chardev_init(void)
 	int i, ret;
 
 	for (i = 0; i < DFL_FPGA_DEVT_MAX; i++) {
-		ret = alloc_chrdev_region(&dfl_chrdevs[i].devt, 0, MINORMASK,
-					  dfl_chrdevs[i].name);
+		ret = alloc_chrdev_region(&dfl_chrdevs[i].devt, 0,
+					  MINORMASK + 1, dfl_chrdevs[i].name);
 		if (ret)
 			goto exit;
 	}
-- 
2.20.1

                 reply	other threads:[~2019-02-21  7:46 UTC|newest]

Thread overview: [no followups] expand[flat|nested]  mbox.gz  Atom feed

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20190221074649.28988-1-cgxu519@gmx.com \
    --to=cgxu519@gmx.com \
    --cc=atull@kernel.org \
    --cc=hao.wu@intel.com \
    --cc=linux-fpga@vger.kernel.org \
    --cc=mdf@kernel.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.