From: Ben Gras <ben@minix3.org>
Date: Fri, 8 May 2009 13:50:29 +0000 (+0000)
Subject: don't suspend the process as a side-effect if
X-Git-Tag: v3.1.4~55
X-Git-Url: http://zhaoyanbai.com/repos/%22http:/www.isc.org/icons/Bv9ARM.ch05.html?a=commitdiff_plain;h=ece26e27310db40745c7988fa2fec9e3487d101b;p=minix.git

don't suspend the process as a side-effect if
device returns SUSPEND if it's select; select already
does this.
---

diff --git a/servers/vfs/device.c b/servers/vfs/device.c
index 744db491b..a7a969153 100644
--- a/servers/vfs/device.c
+++ b/servers/vfs/device.c
@@ -458,8 +458,11 @@ int suspend_reopen;		/* Just suspend the process */
 		(*dp->dmap_io)(dp->dmap_driver, &dev_mess);
 		if (dev_mess.REP_STATUS == EINTR) dev_mess.REP_STATUS = EAGAIN;
 	} else {
-		/* Suspend user. */
-		suspend(dp->dmap_driver);
+		/* select() will do suspending itself. */
+		if(op != DEV_SELECT) {
+			/* Suspend user. */
+			suspend(dp->dmap_driver);
+		}
 		assert(!GRANT_VALID(fp->fp_grant));
 		fp->fp_grant = gid;	/* revoke this when unsuspended. */
 		fp->fp_ioproc = ioproc;