drm/agpsupport: Remove assignment in if condition

Move the assignment so that it happens before the if condition.
Merged multiple similar conditionals to a single conditional statement.
This results in syntax which is easier to read.

Found by checkpath.pl

Signed-off-by: Meghana Madhyastha <meghana.madhyastha@gmail.com>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Link: https://patchwork.freedesktop.org/patch/msgid/d30cb59d92c8a98d0665ef6ae2a56b364dc61098.1505376068.git.meghana.madhyastha@gmail.com

diff --git a/drivers/gpu/drm/drm_agpsupport.c b/drivers/gpu/drm/drm_agpsupport.c
index d9e8cdd..860d57a 100644 (file)
--- a/drivers/gpu/drm/drm_agpsupport.c
+++ b/drivers/gpu/drm/drm_agpsupport.c
@@ -101,7 +101,8 @@ int drm_agp_acquire(struct drm_device *dev)
                return -ENODEV;
        if (dev->agp->acquired)
                return -EBUSY;
-       if (!(dev->agp->bridge = agp_backend_acquire(dev->pdev)))
+       dev->agp->bridge = agp_backend_acquire(dev->pdev);
+       if (!dev->agp->bridge)
                return -ENODEV;
        dev->agp->acquired = 1;
        return 0;
@@ -203,12 +204,14 @@ int drm_agp_alloc(struct drm_device *dev, struct drm_agp_buffer *request)
 
        if (!dev->agp || !dev->agp->acquired)
                return -EINVAL;
-       if (!(entry = kzalloc(sizeof(*entry), GFP_KERNEL)))
+       entry = kzalloc(sizeof(*entry), GFP_KERNEL);
+       if (!entry)
                return -ENOMEM;
 
        pages = (request->size + PAGE_SIZE - 1) / PAGE_SIZE;
        type = (u32) request->type;
-       if (!(memory = agp_allocate_memory(dev->agp->bridge, pages, type))) {
+       memory = agp_allocate_memory(dev->agp->bridge, pages, type);
+       if (!memory) {
                kfree(entry);
                return -ENOMEM;
        }
@@ -275,9 +278,8 @@ int drm_agp_unbind(struct drm_device *dev, struct drm_agp_binding *request)
 
        if (!dev->agp || !dev->agp->acquired)
                return -EINVAL;
-       if (!(entry = drm_agp_lookup_entry(dev, request->handle)))
-               return -EINVAL;
-       if (!entry->bound)
+       entry = drm_agp_lookup_entry(dev, request->handle);
+       if (!entry || !entry->bound)
                return -EINVAL;
        ret = drm_unbind_agp(entry->memory);
        if (ret == 0)
@@ -316,12 +318,12 @@ int drm_agp_bind(struct drm_device *dev, struct drm_agp_binding *request)
 
        if (!dev->agp || !dev->agp->acquired)
                return -EINVAL;
-       if (!(entry = drm_agp_lookup_entry(dev, request->handle)))
-               return -EINVAL;
-       if (entry->bound)
+       entry = drm_agp_lookup_entry(dev, request->handle);
+       if (!entry || entry->bound)
                return -EINVAL;
        page = (request->offset + PAGE_SIZE - 1) / PAGE_SIZE;
-       if ((retcode = drm_bind_agp(entry->memory, page)))
+       retcode = drm_bind_agp(entry->memory, page);
+       if (retcode)
                return retcode;
        entry->bound = dev->agp->base + (page << PAGE_SHIFT);
        DRM_DEBUG("base = 0x%lx entry->bound = 0x%lx\n",
@@ -359,7 +361,8 @@ int drm_agp_free(struct drm_device *dev, struct drm_agp_buffer *request)
 
        if (!dev->agp || !dev->agp->acquired)
                return -EINVAL;
-       if (!(entry = drm_agp_lookup_entry(dev, request->handle)))
+       entry = drm_agp_lookup_entry(dev, request->handle);
+       if (!entry)
                return -EINVAL;
        if (entry->bound)
                drm_unbind_agp(entry->memory);
@@ -398,11 +401,13 @@ struct drm_agp_head *drm_agp_init(struct drm_device *dev)
 {
        struct drm_agp_head *head = NULL;
 
-       if (!(head = kzalloc(sizeof(*head), GFP_KERNEL)))
+       head = kzalloc(sizeof(*head), GFP_KERNEL);
+       if (!head)
                return NULL;
        head->bridge = agp_find_bridge(dev->pdev);
        if (!head->bridge) {
-               if (!(head->bridge = agp_backend_acquire(dev->pdev))) {
+               head->bridge = agp_backend_acquire(dev->pdev);
+               if (!head->bridge) {
                        kfree(head);
                        return NULL;
                }