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Message-Id: <20230623100822.274706-2-sui.jingfeng@linux.dev>
Date: Fri, 23 Jun 2023 18:08:15 +0800
From: Sui Jingfeng <sui.jingfeng@...ux.dev>
To: Lucas Stach <l.stach@...gutronix.de>,
Russell King <linux+etnaviv@...linux.org.uk>,
Christian Gmeiner <christian.gmeiner@...il.com>,
David Airlie <airlied@...il.com>,
Daniel Vetter <daniel@...ll.ch>
Cc: etnaviv@...ts.freedesktop.org, dri-devel@...ts.freedesktop.org,
linux-kernel@...r.kernel.org, loongson-kernel@...ts.loongnix.cn,
Sui Jingfeng <suijingfeng@...ngson.cn>
Subject: [PATCH v1 1/8] drm/etnaviv: Using the size_t variable to store the number of pages
From: Sui Jingfeng <suijingfeng@...ngson.cn>
Because the etnaviv_gem_new_private() function receives the size_t argument
for the number of pages. And the number of pages should be unsigned.
Note that Most 32-bit architectures use "unsigned int" size_t,
and all 64-bit architectures use "unsigned long" size_t.
So, let's keep the argument and parameter consistent.
Signed-off-by: Sui Jingfeng <suijingfeng@...ngson.cn>
---
drivers/gpu/drm/etnaviv/etnaviv_gem_prime.c | 5 ++---
1 file changed, 2 insertions(+), 3 deletions(-)
diff --git a/drivers/gpu/drm/etnaviv/etnaviv_gem_prime.c b/drivers/gpu/drm/etnaviv/etnaviv_gem_prime.c
index 3524b5811682..b003481adc2b 100644
--- a/drivers/gpu/drm/etnaviv/etnaviv_gem_prime.c
+++ b/drivers/gpu/drm/etnaviv/etnaviv_gem_prime.c
@@ -114,7 +114,8 @@ struct drm_gem_object *etnaviv_gem_prime_import_sg_table(struct drm_device *dev,
{
struct etnaviv_gem_object *etnaviv_obj;
size_t size = PAGE_ALIGN(attach->dmabuf->size);
- int ret, npages;
+ size_t npages = size / PAGE_SIZE;
+ int ret;
ret = etnaviv_gem_new_private(dev, size, ETNA_BO_WC,
&etnaviv_gem_prime_ops, &etnaviv_obj);
@@ -123,8 +124,6 @@ struct drm_gem_object *etnaviv_gem_prime_import_sg_table(struct drm_device *dev,
lockdep_set_class(&etnaviv_obj->lock, &etnaviv_prime_lock_class);
- npages = size / PAGE_SIZE;
-
etnaviv_obj->sgt = sgt;
etnaviv_obj->pages = kvmalloc_array(npages, sizeof(struct page *), GFP_KERNEL);
if (!etnaviv_obj->pages) {
--
2.25.1
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