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From: ville.syrjala@linux.intel.com
To: dri-devel@lists.freedesktop.org
Subject: [PATCH 4/6] drm: Simplify core vs. drv ioctl handling
Date: Fri, 27 Mar 2015 15:51:58 +0200	[thread overview]
Message-ID: <1427464320-24592-5-git-send-email-ville.syrjala@linux.intel.com> (raw)
In-Reply-To: <1427464320-24592-1-git-send-email-ville.syrjala@linux.intel.com>

From: Ville Syrjälä <ville.syrjala@linux.intel.com>

Now that cmd_drv is gone the handling for core and driver ioctls is
mostly identical, so eliminate the duplication. Also take the
opportunity to simplify the range checks to be less cluttered.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
---
 drivers/gpu/drm/drm_ioctl.c | 39 +++++++++++++++------------------------
 1 file changed, 15 insertions(+), 24 deletions(-)

diff --git a/drivers/gpu/drm/drm_ioctl.c b/drivers/gpu/drm/drm_ioctl.c
index fc0cf4a..68ba014 100644
--- a/drivers/gpu/drm/drm_ioctl.c
+++ b/drivers/gpu/drm/drm_ioctl.c
@@ -663,39 +663,30 @@ long drm_ioctl(struct file *filp,
 	int retcode = -EINVAL;
 	char stack_kdata[128];
 	char *kdata = NULL;
-	unsigned int usize, asize;
+	unsigned int usize, asize, drv_size;
 
 	dev = file_priv->minor->dev;
 
 	if (drm_device_is_unplugged(dev))
 		return -ENODEV;
 
-	if ((nr >= DRM_CORE_IOCTL_COUNT) &&
-	    ((nr < DRM_COMMAND_BASE) || (nr >= DRM_COMMAND_END)))
-		goto err_i1;
-	if ((nr >= DRM_COMMAND_BASE) && (nr < DRM_COMMAND_END) &&
-	    (nr < DRM_COMMAND_BASE + dev->driver->num_ioctls)) {
-		u32 drv_size;
+	if (nr >= DRM_COMMAND_BASE && nr < DRM_COMMAND_END) {
+		/* driver ioctl */
+		if (nr - DRM_COMMAND_BASE >= dev->driver->num_ioctls)
+			goto err_i1;
 		ioctl = &dev->driver->ioctls[nr - DRM_COMMAND_BASE];
-		drv_size = _IOC_SIZE(ioctl->cmd);
-		usize = asize = _IOC_SIZE(cmd);
-		if (drv_size > asize)
-			asize = drv_size;
-		cmd = ioctl->cmd;
-	}
-	else if ((nr >= DRM_COMMAND_END) || (nr < DRM_COMMAND_BASE)) {
-		u32 drv_size;
-
+	} else {
+		/* core ioctl */
+		if (nr >= DRM_CORE_IOCTL_COUNT)
+			goto err_i1;
 		ioctl = &drm_ioctls[nr];
+	}
 
-		drv_size = _IOC_SIZE(ioctl->cmd);
-		usize = asize = _IOC_SIZE(cmd);
-		if (drv_size > asize)
-			asize = drv_size;
-
-		cmd = ioctl->cmd;
-	} else
-		goto err_i1;
+	drv_size = _IOC_SIZE(ioctl->cmd);
+	usize = asize = _IOC_SIZE(cmd);
+	if (drv_size > asize)
+		asize = drv_size;
+	cmd = ioctl->cmd;
 
 	DRM_DEBUG("pid=%d, dev=0x%lx, auth=%d, %s\n",
 		  task_pid_nr(current),
-- 
2.0.5

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  parent reply	other threads:[~2015-03-27 13:52 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-03-27 13:51 [PATCH 0/6] drm: Ioctl code cleanups ville.syrjala
2015-03-27 13:51 ` [PATCH 1/6] drm: Fix DRM_IOCTL_DEF_DRV() ville.syrjala
2015-03-27 15:14   ` Emil Velikov
2015-03-30 11:23     ` Ville Syrjälä
2015-03-30 12:58       ` [PATCH] drm: line wrap DRM_IOCTL_DEF* macros Emil Velikov
2015-03-30 14:51         ` Daniel Vetter
2015-03-30 17:10         ` [PATCH v2] " Emil Velikov
2015-03-31  7:18           ` Daniel Vetter
2015-03-27 13:51 ` [PATCH 2/6] drm: Drop ioctl->cmd_drv ville.syrjala
2015-03-27 13:51 ` [PATCH 3/6] drm/vmwgfx: Replace VMW_IOCTL_DEF with DRM_IOCTL_DEF_DRV ville.syrjala
2015-03-27 13:51 ` ville.syrjala [this message]
2015-03-27 13:51 ` [PATCH 5/6] drm: Use max() to make the ioctl alloc size code cleaner ville.syrjala
2015-03-27 13:52 ` [PATCH 6/6] drm: Rewrite drm_ioctl_flags() to resemble the new drm_ioctl() code ville.syrjala
2015-03-27 15:09 ` [PATCH 0/6] drm: Ioctl code cleanups Daniel Vetter

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