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From: Misono Tomohiro <misono.tomohiro@jp.fujitsu.com>
To: <linux-arm-kernel@lists.infradead.org>, <soc@kernel.org>
Cc: olof@lixom.net, catalin.marinas@arm.com, will@kernel.org,
	misono.tomohiro@jp.fujitsu.com, arnd@arndb.de
Subject: [PATCH 02/10] soc: fujtisu: hwb: Add open operation
Date: Fri, 8 Jan 2021 19:52:33 +0900	[thread overview]
Message-ID: <20210108105241.1757799-3-misono.tomohiro@jp.fujitsu.com> (raw)
In-Reply-To: <20210108105241.1757799-1-misono.tomohiro@jp.fujitsu.com>

Nothing special. Just preparing private_data for this FD.

Signed-off-by: Misono Tomohiro <misono.tomohiro@jp.fujitsu.com>
---
 drivers/soc/fujitsu/fujitsu_hwb.c | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/drivers/soc/fujitsu/fujitsu_hwb.c b/drivers/soc/fujitsu/fujitsu_hwb.c
index 44c32c1683df..1dec3d3c652f 100644
--- a/drivers/soc/fujitsu/fujitsu_hwb.c
+++ b/drivers/soc/fujitsu/fujitsu_hwb.c
@@ -142,8 +142,28 @@ struct bb_info {
 };
 static struct kmem_cache *bb_info_cachep;
 
+static int fujitsu_hwb_dev_open(struct inode *inode, struct file *filp)
+{
+	struct hwb_private_data *pdata;
+
+	pdata = kzalloc(sizeof(*pdata), GFP_KERNEL);
+	if (!pdata)
+		return -ENOMEM;
+	INIT_LIST_HEAD(&pdata->bb_list);
+	spin_lock_init(&pdata->list_lock);
+
+	/*
+	 * misc_open() sets pointer of the miscdevice to filp->private_data.
+	 * Just override it since barrier fops does not use it
+	 */
+	filp->private_data = pdata;
+
+	return 0;
+}
+
 static const struct file_operations fujitsu_hwb_dev_fops = {
 	.owner          = THIS_MODULE,
+	.open           = fujitsu_hwb_dev_open,
 };
 
 static struct miscdevice bar_miscdev = {
-- 
2.26.2


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  parent reply	other threads:[~2021-01-08 10:43 UTC|newest]

Thread overview: 34+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-01-08 10:52 [RFC PATCH 00/10] Add Fujitsu A64FX soc entry/hardware barrier driver Misono Tomohiro
2021-01-08 10:52 ` [PATCH 01/10] soc: fujitsu: hwb: Add hardware barrier driver init/exit code Misono Tomohiro
2021-01-08 10:52 ` Misono Tomohiro [this message]
2021-01-08 10:52 ` [PATCH 03/10] soc: fujitsu: hwb: Add IOC_BB_ALLOC ioctl Misono Tomohiro
2021-01-08 13:22   ` Arnd Bergmann
2021-01-12 11:02     ` misono.tomohiro
2021-01-12 12:34       ` Arnd Bergmann
2021-01-08 10:52 ` [PATCH 04/10] soc: fujitsu: hwb: Add IOC_BW_ASSIGN ioctl Misono Tomohiro
2021-01-08 10:52 ` [PATCH 05/10] soc: fujitsu: hwb: Add IOC_BW_UNASSIGN ioctl Misono Tomohiro
2021-01-08 10:52 ` [PATCH 06/10] soc: fujitsu: hwb: Add IOC_BB_FREE ioctl Misono Tomohiro
2021-01-08 10:52 ` [PATCH 07/10] soc: fujitsu: hwb: Add IOC_GET_PE_INFO ioctl Misono Tomohiro
2021-01-08 10:52 ` [PATCH 08/10] soc: fujitsu: hwb: Add release operation Misono Tomohiro
2021-01-08 13:25   ` Arnd Bergmann
2021-01-12 10:38     ` misono.tomohiro
2021-01-08 10:52 ` [PATCH 09/10] soc: fujitsu: hwb: Add sysfs entry Misono Tomohiro
2021-01-08 13:27   ` Arnd Bergmann
2021-01-12 10:40     ` misono.tomohiro
2021-01-08 10:52 ` [PATCH 10/10] soc: fujitsu: hwb: Add Kconfig/Makefile to build fujitsu_hwb driver Misono Tomohiro
2021-01-08 12:54 ` [RFC PATCH 00/10] Add Fujitsu A64FX soc entry/hardware barrier driver Mark Rutland
2021-01-08 14:23   ` Arnd Bergmann
2021-01-08 15:51     ` Mark Rutland
2021-01-12 10:24     ` misono.tomohiro
2021-01-12 14:22       ` Arnd Bergmann
2021-01-15 11:10         ` misono.tomohiro
2021-01-15 12:24           ` Arnd Bergmann
2021-01-19  5:30             ` misono.tomohiro
2021-02-18  9:49             ` misono.tomohiro
2021-03-01  7:53               ` misono.tomohiro
2021-03-02 11:06               ` Arnd Bergmann
2021-03-03 11:20                 ` misono.tomohiro
2021-03-03 13:33                   ` Arnd Bergmann
2021-03-04  7:03                     ` misono.tomohiro
2021-01-12 10:32   ` misono.tomohiro
  -- strict thread matches above, loose matches on Subject: below --
2021-01-08 10:32 Misono Tomohiro
2021-01-08 10:32 ` [PATCH 02/10] soc: fujtisu: hwb: Add open operation Misono Tomohiro

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