From: Michal Suchanek <msuchanek@suse.de>
To: linux-scsi@vger.kernel.org
Cc: Michal Suchanek <msuchanek@suse.de>,
Christoph Hellwig <hch@infradead.org>,
Matthew Wilcox <willy@infradead.org>,
"Ewan D. Milne" <emilne@redhat.com>,
Jonathan Corbet <corbet@lwn.net>, Jens Axboe <axboe@kernel.dk>,
"James E.J. Bottomley" <jejb@linux.ibm.com>,
"Martin K. Petersen" <martin.petersen@oracle.com>,
Alexander Viro <viro@zeniv.linux.org.uk>,
"J. Bruce Fields" <bfields@redhat.com>,
Mauro Carvalho Chehab <mchehab+samsung@kernel.org>,
Eric Biggers <ebiggers@google.com>,
Benjamin Coddington <bcodding@redhat.com>,
Hannes Reinecke <hare@suse.com>, Omar Sandoval <osandov@fb.com>,
Ming Lei <ming.lei@redhat.com>,
Damien Le Moal <damien.lemoal@wdc.com>,
Bart Van Assche <bvanassche@acm.org>, Tejun Heo <tj@kernel.org>,
linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-fsdevel@vger.kernel.org
Subject: [PATCH v3 1/7] cdrom: add poll_event_interruptible
Date: Fri, 25 Oct 2019 13:21:38 +0200 [thread overview]
Message-ID: <0a5ab9c86120851692aaa4390ee85ab9b2f86a8a.1572002144.git.msuchanek@suse.de> (raw)
In-Reply-To: <cover.1572002144.git.msuchanek@suse.de>
Add convenience macro for polling an event that does not have a
waitqueue.
Signed-off-by: Michal Suchanek <msuchanek@suse.de>
---
drivers/cdrom/cdrom.c | 14 ++++++++++++++
1 file changed, 14 insertions(+)
diff --git a/drivers/cdrom/cdrom.c b/drivers/cdrom/cdrom.c
index ac42ae4651ce..2ad6b73482fe 100644
--- a/drivers/cdrom/cdrom.c
+++ b/drivers/cdrom/cdrom.c
@@ -282,10 +282,24 @@
#include <linux/fcntl.h>
#include <linux/blkdev.h>
#include <linux/times.h>
+#include <linux/delay.h>
#include <linux/uaccess.h>
+#include <linux/sched/signal.h>
#include <scsi/scsi_common.h>
#include <scsi/scsi_request.h>
+#define poll_event_interruptible(event, interval) ({ \
+ int ret = 0; \
+ while (!(event)) { \
+ if (signal_pending(current)) { \
+ ret = -ERESTARTSYS; \
+ break; \
+ } \
+ msleep_interruptible(interval); \
+ } \
+ ret; \
+})
+
/* used to tell the module to turn on full debugging messages */
static bool debug;
/* default compatibility mode */
--
2.23.0
next prev parent reply other threads:[~2019-10-25 11:21 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-10-25 11:21 [PATCH v3 0/7] Fix cdrom autoclose Michal Suchanek
2019-10-25 11:21 ` Michal Suchanek [this message]
2019-10-25 11:21 ` [PATCH v3 2/7] cdrom: factor out common open_for_* code Michal Suchanek
2019-10-25 11:21 ` [PATCH v3 3/7] cdrom: wait for the tray to close Michal Suchanek
2019-10-25 11:21 ` [PATCH v3 4/7] cdrom: export autoclose logic as a separate function Michal Suchanek
2019-10-25 11:21 ` [PATCH v3 5/7] bdev: add open_finish Michal Suchanek
2019-11-05 0:17 ` Christoph Hellwig
2019-11-21 10:06 ` Michal Suchánek
2019-10-25 11:21 ` [PATCH v3 6/7] scsi: blacklist: add VMware ESXi cdrom - broken tray emulation Michal Suchanek
2019-10-25 11:21 ` [PATCH v3 7/7] scsi: sr: wait for the medium to become ready Michal Suchanek
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